Uniaxial Minerals

Uniaxial Minerals

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Uniaxial Minerals

(* - Mineral name not approved by the IMA)
(! - New Dana classification number has been added or changed)
(? - IMA Discredited Mineral Species Name)


Optics	MINERAL
Uniaxial (?).	Ankangite 
Uniaxial (?).	Apuanite 
Uniaxial (?).	Asbolane 
Uniaxial (?).	Barium-alumopharmacosiderite ?
Uniaxial (?).	Cesplumtantite 
Uniaxial (?).	Delafossite 
Uniaxial (+).	Ecandrewsite 
Uniaxial (?).	Eskolaite 
Uniaxial (?).	Ferronigerite-6N6S !
Uniaxial (?).	Fougerite !
Uniaxial (-).	Hawthorneite 
Uniaxial (-).	Hibonite 
Uniaxial (-).	Hundholmenite-(Y) !
Uniaxial (-).	Hydroxylpyromorphite !
Uniaxial (-).	Ilmenite 
Uniaxial (-).	Ilmenorutile 
Uniaxial (?).	Irtyshite 
Uniaxial (?).	Iwakiite 
Uniaxial (-).	Kamiokite 
Uniaxial (?).	Karelianite 
Uniaxial (?).	Kusachiite 
Uniaxial (?).	Lindqvistite 
Uniaxial (?).	Lindsleyite 
Uniaxial (?).	Lithiophorite 
Uniaxial (?).	Loveringite 
Uniaxial (?).	Lusungite ?
Uniaxial (?).	Macedonite 
Uniaxial (?).	Magnetoplumbite 
Uniaxial (+).	Mannardite 
Uniaxial (?).	Mathiasite 
Uniaxial (?).	Natrotantite 
Uniaxial (?).	Nolanite 
Uniaxial (?).	Pintadoite 
Uniaxial (-).	Plumboferrite 
Uniaxial (?).	Pyrolusite 
Uniaxial (-).	Rinmanite !
Uniaxial (?).	Santarosaite !
Uniaxial (-).	Schorl-(F) !
Uniaxial (?).	Stavelotite-(La) !
Uniaxial (+).	Struverite ?
Uniaxial (?).	Tapiolite-(Mn) 
Uniaxial (?).	Versiliaite 
Uniaxial (?).	Xifengite 
Uniaxial (?).	Yimengite 
Uniaxial (?).	Zaccagnaite !
Uniaxial (?).	Zenzenite 
Uniaxial (?).	Zincalstibite !
Uniaxial (?).	Zirconolite-3T 
Uniaxial (?), a=1.3, b=1.3, bire=0.0000.	Methane hydrate-II !
Uniaxial (-), e=1.309, w=1.313, bire=0.0040.	Malladrite 
Uniaxial (?), a=1.32, b=1.33, bire=0.0100.	Ice 
Uniaxial (-), e=1.34, w=1.35, bire=0.0100.	Demartinite !
Uniaxial (-), e=1.342, w=1.349, bire=0.0070.	Chiolite 
Uniaxial (+), w=1.378, e=1.39, bire=0.0120.	Sellaite 
Uniaxial (-), e=1.385, w=1.388, bire=0.0030.	Colquiriite 
Uniaxial (-), e=1.391, w=1.406, bire=0.0150.	Bararite 
Uniaxial (-), e=1.4, w=1.54, bire=0.1400.	Thomasclarkite-(Y) !
Uniaxial (-), e=1.403, w=1.427, bire=0.0240.	Rosenbergite 
Uniaxial (-), e=1.408, w=1.479, bire=0.0710.	Zhemchuzhnikovite 
Uniaxial (-), e=1.417, w=1.515, bire=0.0980.	Stepanovite 
Uniaxial (-), e=1.436, w=1.474, bire=0.0380.	Humberstonite 
Uniaxial (+), w=1.439, e=1.482, bire=0.0430.	Paceite !
Uniaxial (+), w=1.44, e=1.445, bire=0.0050.	Schairerite 
Uniaxial (?), a=1.445, b=1.595, bire=0.1500.	Butschliite 
Uniaxial (+), w=1.447, e=1.449, bire=0.0020.	Galeite 
Uniaxial (-), e=1.447, w=1.502, bire=0.0550.	Iquiqueite 
Uniaxial (+), w=1.449, e=1.502, bire=0.0530.	Ungemachite 
Uniaxial (+), w=1.45, e=2.62, bire=1.1700.	Covellite 
Uniaxial (-), e=1.4502, w=1.6052, bire=0.1550.	Eitelite 
Uniaxial (-), e=1.459, w=1.504, bire=0.0450.	Mcallisterite 
Uniaxial (-), e=1.459, w=1.525, bire=0.0660.	Natrofairchildite 
Uniaxial (-), e=1.46, w=1.495, bire=0.0350.	Acetamide 
Uniaxial (+), w=1.46, e=1.57, bire=0.1380-0.1750.	Chrysocolla 
Uniaxial (+), w=1.46, e=1.478, bire=0.0180.	Lannonite 
Uniaxial (+), w=1.46, e=1.47, bire=0.0100.	Tincalconite 
Uniaxial (-), e=1.461, w=1.481, bire=0.0200.	Hanksite 
Uniaxial (-), e=1.468, w=1.507, bire=0.0390.	Thaumasite 
Uniaxial (+), w=1.469, e=1.502, bire=0.0330.	Niveolanite !
Uniaxial (-), e=1.47, w=1.513, bire=0.0430.	Archerite 
Uniaxial (-), e=1.47, w=1.491, bire=0.0210.	Ettringite 
Uniaxial (-), e=1.471, w=1.477, bire=0.0060.	Gmelinite-K !
Uniaxial (-), e=1.471, w=1.49, bire=0.0190.	Loweite 
Uniaxial (+), w=1.471, e=1.472, bire=0.0010.	Mazzite-Na !
Uniaxial (+), w=1.4711, e=1.474, bire=0.0191.	Erionite-Ca !
Uniaxial (+), w=1.4711, e=1.474, bire=0.0191.	Erionite-K !
Uniaxial (+), w=1.4711, e=1.474, bire=0.0191.	Erionite-Na 
Uniaxial (+), w=1.472, e=1.492, bire=0.0200.	Gagarinite-(Y) 
Uniaxial (+), w=1.472, e=1.502, bire=0.0300.	Indigirite 
Uniaxial (-), e=1.475, w=1.492, bire=0.0170.	Charlesite 
Uniaxial (-), e=1.471-1.479, w=1.474-1.481, bire=0.0020-0.0030.	Herschelite ?
Uniaxial (-), e=1.476, w=1.49, bire=0.0140.	Wardsmithite 
Uniaxial (+/-), a=1.474-1.481, b=1.476-1.494, bire=0.0020-0.0130.	Gmelinite-Ca !
Uniaxial (+/-), a=1.474-1.481, b=1.476-1.494, bire=0.0020-0.0130.	Gmelinite-Na 
Uniaxial (+), w=1.478, e=1.484, bire=0.0060.	Bentorite 
Uniaxial (-), e=1.478, w=1.532, bire=0.0540.	Fairchildite 
Uniaxial (+), w=1.479, e=1.509, bire=0.0300.	Carraraite !
Uniaxial (-), e=1.48, w=1.525, bire=0.0450.	Biphosphammite 
Uniaxial (-), e=1.48, w=1.601, bire=0.1210.	Grimselite 
Uniaxial (+), w=1.481, e=1.496, bire=0.0150.	Tetranatrolite ?
Uniaxial (-), e=1.482, w=1.493, bire=0.0110.	Wermlandite 
Uniaxial (-), e=1.483, w=1.484, bire=0.0010.	Tschernichite 
Uniaxial (+), w=1.483, e=1.503, bire=0.0200.	Zajacite-(Ce) 
Uniaxial (+), w=1.484, e=1.603, bire=0.1190.	Urea 
Uniaxial (-), e=1.485, w=1.58, bire=0.0950.	Berborite 
Uniaxial (-), e=1.485, w=1.504, bire=0.0190.	Kuzelite !
Uniaxial (-), e=1.486, w=1.64-1.66, bire=0.1540-0.1740.	Calcite 
Uniaxial (-), e=1.486, w=1.505, bire=0.0190.	Sacrofanite 
Uniaxial (-), e=1.4873, w=1.5109, bire=0.0236.	Retgersite 
Uniaxial (+), w=1.488, e=1.5, bire=0.0120.	Douglasite 
Uniaxial (+), w=1.487-1.491, e=1.492-1.499, bire=0.0050-0.0080.	Aphthitalite 
Uniaxial (-), e=1.486-1.492, w=1.489-1.495, bire=0.0030.	Offretite 
Uniaxial (-), e=1.49, w=1.509, bire=0.0190.	Cancrisilite 
Uniaxial (+), w=1.491, e=1.507, bire=0.0160.	Giuseppettite 
Uniaxial (-), e=1.488-1.495, w=1.49-1.507, bire=0.0020-0.0120.	Vishnevite 
Uniaxial (-), e=1.494, w=1.501, bire=0.0070.	Hydroxycancrinite 
Uniaxial (+), w=1.4941, e=1.496, bire=0.0019.	Orschallite 
Uniaxial (-), e=1.487-1.502, w=1.489-1.51, bire=0.0020-0.0080.	Levyne-Ca 
Uniaxial (-), e=1.487-1.502, w=1.489-1.51, bire=0.0020-0.0080.	Levyne-Na !
Uniaxial (-), e=1.495, w=1.55, bire=0.0550.	Antarcticite 
Uniaxial (+), w=1.495, e=1.497, bire=0.0020.	Marinellite !
Uniaxial (+), w=1.496, e=1.502, bire=0.0060.	Tugtupite 
Uniaxial (+), w=1.497, e=1.499, bire=0.0020.	Alloriite !
Uniaxial (-), e=1.495-1.503, w=1.507-1.528, bire=0.0120-0.0250.	Cancrinite 
Uniaxial (+), w=1.499, e=1.503, bire=0.0040.	Farneseite !
Uniaxial (-), e=1.499, w=1.5062, bire=0.0072.	Mazzite-Mg 
Uniaxial (-), e=1.5, w=1.679-1.681, bire=0.1790-0.1810.	Dolomite 
Uniaxial (-), e=1.5, w=1.517, bire=0.0170.	Meixnerite 
Uniaxial (+), w=1.5, e=1.515, bire=0.0150.	Millosevichite 
Uniaxial (+), w=1.5, e=1.505, bire=0.0050.	Sturmanite 
Uniaxial (-), e=1.497-1.506, w=1.506-1.53, bire=0.0090-0.0240.	Slavikite 
Uniaxial (-), e=1.503, w=1.516, bire=0.0130.	Arnhemite *
Uniaxial (+), w=1.503, e=1.507, bire=0.0040.	Chabazite-Sr !
Uniaxial (-), e=1.503, w=1.532, bire=0.0290.	Micheelsenite !
Uniaxial (-), e=1.503, w=1.519, bire=0.0160.	Teepleite 
Uniaxial (+), w=1.504, e=1.518, bire=0.0140.	Mikasaite 
Uniaxial (-), e=1.506, w=1.508, bire=0.0020.	Pitiglianoite 
Uniaxial (-), e=1.507, w=1.522, bire=0.0150.	Bellbergite 
Uniaxial (-), e=1.507, w=1.56, bire=0.0530.	Chloraluminite 
Uniaxial (+), w=1.509, e=1.526, bire=0.0170.	Vlodavetsite !
Uniaxial (-), e=1.51, w=1.54, bire=0.0300.	Brugnatellite 
Uniaxial (?), a=1.51, b=1.51, bire=0.0000.	Chlorartinite !
Uniaxial (+), w=1.51, e=1.515, bire=0.0050.	Francoanellite 
Uniaxial (+), w=1.51, e=1.512, bire=0.0020.	Franzinite 
Uniaxial (-), e=1.51, w=1.524, bire=0.0140.	Manasseite 
Uniaxial (-), e=1.51, w=1.536, bire=0.0260.	Mineevite-(Y) 
Uniaxial (?), a=1.51, b=1.51, bire=0.0000.	Motukoreaite 
Uniaxial (-), e=1.51, w=1.52, bire=0.0100.	Mountkeithite 
Uniaxial (+), w=1.51, e=1.512, bire=0.0020.	Thornasite 
Uniaxial (-), e=1.511, w=1.539, bire=0.0280.	Mellite 
Uniaxial (+), w=1.5117, e=1.5224, bire=0.0107.	Leifite 
Uniaxial (-), e=1.495-1.529, w=1.511-1.531, bire=0.0020-0.0160.	Hydrotalcite 
Uniaxial (-), e=1.512, w=1.52, bire=0.0080.	Tachyhydrite 
Uniaxial (-), e=1.513, w=1.535, bire=0.0220.	Zemkorite 
Uniaxial (-), e=1.514, w=1.534, bire=0.0200.	Zincaluminite 
Uniaxial (+), w=1.516, e=1.533, bire=0.0170.	Felsobanyaite 
Uniaxial (+), w=1.516, e=1.542, bire=0.0260.	Stichtite 
Uniaxial (+), w=1.515-1.519, e=1.515-1.519, bire=0.0000.	Basaluminite ?
Uniaxial (-), e=1.517, w=1.521, bire=0.0040.	Carletonite 
Uniaxial (+), w=1.518, e=1.518, bire=0.0000.	Ammonioleucite 
Uniaxial (-), e=1.519, w=1.694, bire=0.1750.	Norsethite 
Uniaxial (+), w=1.52, e=1.54, bire=0.0200.	Andersonite 
Uniaxial (+), w=1.518-1.522, e=1.517-1.527, bire=0.0010-0.0050.	Davyne 
Uniaxial (+), w=1.52, e=1.55, bire=0.0300.	Koenenite 
Uniaxial (-), w=1.52.	Virgilite 
Uniaxial (+), w=1.521, e=1.529, bire=0.0080.	Microsommite 
Uniaxial (+), w=1.522, e=1.552, bire=0.0300.	Zirklerite 
Uniaxial (+), w=1.523, e=1.529, bire=0.0060.	Afghanite 
Uniaxial (+), w=1.523, e=1.532, bire=0.0090.	Buryatite !
Uniaxial (+), w=1.523, e=1.544, bire=0.0210.	Weddellite 
Uniaxial (+), w=1.5235, e=1.529, bire=0.0055.	Berlinite 
Uniaxial (+), w=1.525, e=1.525, bire=0.0000.	Kalborsite 
Uniaxial (-), e=1.527, w=1.69, bire=0.1630.	Benstonite 
Uniaxial (+), w=1.527, e=1.586, bire=0.0590.	Eucryptite 
Uniaxial (-), e=1.527, w=1.532, bire=0.0050.	Kaliophilite 
Uniaxial (-), e=1.527, w=1.67, bire=0.1430.	Olekminskite 
Uniaxial (-), e=1.527, w=1.672, bire=0.1450.	Paralstonite 
Uniaxial (+), w=1.527, e=1.535, bire=0.0080.	Roggianite 
Uniaxial (-), e=1.528, w=1.53, bire=0.0020.	Liottite 
Uniaxial (+), w=1.528, e=1.543, bire=0.0150.	Tounkite 
Uniaxial (-), e=1.529, w=1.557, bire=0.0280.	Barbertonite 
Uniaxial (+), w=1.529, e=1.532, bire=0.0030.	Quadridavyne 
Uniaxial (-), e=1.51-1.55, w=1.69-1.75, bire=0.1800-0.2000.	Ankerite 
Uniaxial (-), e=1.531, w=1.566, bire=0.0350.	Hydroxylborite !
Uniaxial (-), e=1.531, w=1.538, bire=0.0070.	Megakalsilite !
Uniaxial (-), e=1.532, w=1.534, bire=0.0020.	Caminite 
Uniaxial (+), w=1.532, e=1.57, bire=0.0380.	Fibroferrite 
Uniaxial (+), w=1.53-1.536, e=1.532-1.538, bire=0.0020.	Apophyllite-(KF) 
Uniaxial (+), w=1.533, e=1.533, bire=0.0000.	Quintinite-2H 
Uniaxial (+/-), a=1.533, b=1.533, bire=0.0000.	Quintinite-3T 
Uniaxial (-), e=1.532-1.535, w=1.537-1.539, bire=0.0040-0.0050.	Indialite 
Uniaxial (-), e=1.534, w=1.57, bire=0.0360.	Fluoborite 
Uniaxial (-), e=1.534, w=1.542, bire=0.0080.	Karchevskyite !
Uniaxial (-), w=1.534.	Stratlingite 
Uniaxial (-), e=1.532-1.537, w=1.538-1.543, bire=0.0060.	Kalsilite 
Uniaxial (+), w=1.535, e=1.537, bire=0.0020.	Apophyllite *
Uniaxial (-), e=1.535, w=1.727, bire=0.1920.	Kutnohorite 
Uniaxial (-), e=1.535, w=1.54, bire=0.0050.	Panunzite 
Uniaxial (-), e=1.535, w=1.555, bire=0.0200.	Woodallite !
Uniaxial (-), e=1.535, w=1.565, bire=0.0300.	Zakharovite 
Uniaxial (+), w=1.536, e=1.545, bire=0.0090.	Ashcroftine-(Ce) *
Uniaxial (-), e=1.528-1.544, w=1.531-1.549, bire=0.0030-0.0050.	Nepheline 
Uniaxial (+), w=1.536, e=1.544, bire=0.0080.	Yagiite 
Uniaxial (+), w=1.536-1.537, e=1.545-1.549, bire=0.0090-0.0120.	Ashcroftine-(Y) 
Uniaxial (-), e=1.537, w=1.539, bire=0.0020.	Marialite 
Uniaxial (-), e=1.537, w=1.548, bire=0.0110.	Reederite-(Y) !
Uniaxial (+), w=1.537, e=1.542, bire=0.0050.	Roedderite 
Uniaxial (-), e=1.538, w=1.542, bire=0.0040.	Arsenuranospathite 
Uniaxial (-), e=1.533-1.543, w=1.543-1.561, bire=0.0100-0.0180.	Iowaite 
Uniaxial (+), w=1.538, e=1.563, bire=0.0250.	Sheldrickite !
Uniaxial (-), e=1.5382, w=1.5607, bire=0.0225.	Gordaite !
Uniaxial (-), e=1.529-1.548, w=1.532-1.551, bire=0.0030-0.0160.	Milarite 
Uniaxial (-), e=1.54, w=1.56, bire=0.0200.	Carrboydite 
Uniaxial (+), w=1.54, e=1.56, bire=0.0200.	Chlormagaluminite 
Uniaxial (-), e=1.54, w=1.556, bire=0.0160.	Jouravskite 
Uniaxial (?), a=1.54, b=1.54, bire=0.0000.	Sinjarite 
Uniaxial (+), w=1.5406, e=1.543, bire=0.0024.	Osumilite-(Mg) 
Uniaxial (+), w=1.542, e=1.543, bire=0.0010.	Apophyllite-(KOH) 
Uniaxial (-), e=1.542, w=1.728, bire=0.1860.	Lukechangite-(Ce) !
Uniaxial (-), e=1.542, w=1.568, bire=0.0260.	Theresemagnanite 
Uniaxial (-), e=1.543, w=1.564, bire=0.0210.	Pyroaurite 
Uniaxial (+), w=1.543-1.5445, e=1.5443-1.5458, bire=0.0013.	Eifelite 
Uniaxial (-), e=1.544, w=1.584, bire=0.0400.	Guarinoite 
Uniaxial (+), w=1.543-1.545, e=1.552-1.554, bire=0.0090.	Quartz 
Uniaxial (+), w=1.545, e=1.59, bire=0.0450.	Monohydrocalcite 
Uniaxial (?), b=1.532-1.558.	Zincowoodwardite !
Uniaxial (+), w=1.545-1.547, e=1.549-1.551, bire=0.0040.	Osumilite-(Fe) 
Uniaxial (-), w=1.546.	Shigaite 
Uniaxial (-), e=1.522-1.571, w=1.534-1.607, bire=0.0120-0.0360.	Scapolite *
Uniaxial (-), e=1.547, w=1.587, bire=0.0400.	Charmarite-2H 
Uniaxial (-), e=1.547, w=1.587, bire=0.0400.	Charmarite-3T 
Uniaxial (-), e=1.547, w=1.569, bire=0.0220.	Desautelsite 
Uniaxial (-), e=1.547, w=1.574, bire=0.0270.	Portlandite 
Uniaxial (+), w=1.549, e=1.565, bire=0.0160.	Hydrowoodwardite !
Uniaxial (-), e=1.549, w=1.569, bire=0.0200.	Kalistrontite 
Uniaxial (-), e=1.549, w=1.561, bire=0.0120.	Lovozerite 
Uniaxial (+), w=1.55, e=1.57, bire=0.0200.	Bassanite 
Uniaxial (+), w=1.55, e=1.557, bire=0.0070.	Coquimbite 
Uniaxial (-), e=1.55, w=1.75, bire=0.2000.	Minrecordite 
Uniaxial (+), w=1.55, e=1.555, bire=0.0050.	Paracoquimbite 
Uniaxial (-), e=1.55, w=1.573, bire=0.0230.	Sjogrenite 
Uniaxial (+), w=1.55, e=1.65, bire=0.1000.	Vaterite 
Uniaxial (+), w=1.551, e=1.559, bire=0.0080.	Tiptopite 
Uniaxial (+), w=1.552, e=1.561, bire=0.0090.	Friedrichbeckeite !
Uniaxial (-), e=1.552, w=1.53, bire=0.0220.	Truscottite 
Uniaxial (+), w=1.553, e=1.573, bire=0.0200.	Formicaite !
Uniaxial (-), e=1.553, w=1.556, bire=0.0030.	Oftedalite !
Uniaxial (-), e=1.554, w=1.612, bire=0.0580.	Diomignite 
Uniaxial (-), e=1.55-1.56, w=1.58-1.6, bire=0.0300-0.0400.	Meionite 
Uniaxial (?), a=1.556, b=1.567, bire=0.0110.	Aliettite 
Uniaxial (+), w=1.556, e=1.645, bire=0.0890.	Julienite *
Uniaxial (-), e=1.558, w=1.585, bire=0.0270.	Silvialite !
Uniaxial (?), b=1.558.	Zincowoodwardite-1T !
Uniaxial (-), e=1.559, w=1.56, bire=0.0010.	Almarudite !
Uniaxial (+), w=1.559, e=1.627, bire=0.0680.	Ferrinatrite 
Uniaxial (-), e=1.559, w=1.578, bire=0.0190.	Sodium meta-autunite !
Uniaxial (-), e=1.559, w=1.578, bire=0.0190.	Sodium-autunite 
Uniaxial (-), e=1.56, w=1.572, bire=0.0120.	Barium-zinc-alumopharmacosiderite *
Uniaxial (+), w=1.56, e=1.58, bire=0.0200.	Brucite 
Uniaxial (-), e=1.56, w=1.58, bire=0.0200.	Meta-ankoleite 
Uniaxial (-), w=1.56.	Nikischerite !
Uniaxial (-), e=1.558-1.563, w=1.5558-1.563, bire=0.0000-0.0022.	Reyerite 
Uniaxial (+), w=1.561, e=1.563, bire=0.0020.	Shibkovite !
Uniaxial (+), w=1.562, e=1.531, bire=0.0310.	Telyushenkoite !
Uniaxial (-), e=1.552-1.575, w=1.618-1.632, bire=0.0570-0.0660.	Chalcophyllite 
Uniaxial (-), w=1.5636.	Zincowoodwardite-3R !
Uniaxial (-), e=1.564, w=1.57, bire=0.0060.	Cesanite 
Uniaxial (+), w=1.564, e=1.577, bire=0.0130.	Perhamite 
Uniaxial (-), e=1.56-1.569, w=1.565-1.577, bire=0.0050-0.0080.	Zeophyllite 
Uniaxial (+), w=1.565, e=1.575, bire=0.0100.	Pinnoite 
Uniaxial (-), e=1.565, w=1.745, bire=0.1800.	Zhonghuacerite-(Ce) 
Uniaxial (-), e=1.566, w=1.567, bire=0.0010.	Brannockite 
Uniaxial (-), e=1.568, w=1.579, bire=0.0110.	Chernikovite 
Uniaxial (-), e=1.568, w=1.58, bire=0.0120.	Ekanite 
Uniaxial (+), w=1.568, e=1.59, bire=0.0220.	Natroalunite 
Uniaxial (+), w=1.569, e=1.571, bire=0.0020.	Aqualite !
Uniaxial (-), e=1.569, w=1.57, bire=0.0010.	Brandholzite !
Uniaxial (+), w=1.569, e=1.581, bire=0.0120.	Schaurteite 
Uniaxial (-), e=1.57, w=1.597, bire=0.0270.	Abernathyite 
Uniaxial (+/-), a=1.57, b=1.57, bire=0.0000.	Bariopharmacosiderite 
Uniaxial (-), e=1.57, w=1.599, bire=0.0290.	Caresite 
Uniaxial (-), e=1.57, w=1.587, bire=0.0170.	Shafranovskite 
Uniaxial (+), w=1.56-1.58, e=1.62-1.64, bire=0.0600.	Yoshiokaite 
Uniaxial (?), a=1.571, b=1.581, bire=0.0100.	Sergeevite 
Uniaxial (+), w=1.572, e=1.592, bire=0.0200.	Alunite 
Uniaxial (-), e=1.572, w=1.646, bire=0.0740.	Ewaldite 
Uniaxial (+), w=1.572, e=1.581, bire=0.0090.	Godovikovite 
Uniaxial (-), e=1.572, w=1.573, bire=0.0010.	Steacyite 
Uniaxial (-), e=1.573, w=1.605, bire=0.0320.	Heinrichite 
Uniaxial (+), w=1.573, e=1.599, bire=0.0260.	Tunisite 
Uniaxial (-), e=1.574, w=1.577, bire=0.0030.	Ekaterinite 
Uniaxial (+), w=1.574, e=1.587, bire=0.0130.	Tuliokite 
Uniaxial (+), w=1.575, e=1.578, bire=0.0030.	Chayesite 
Uniaxial (-), e=1.56-1.59, w=1.588-1.635, bire=0.0280-0.0450.	Coalingite 
Uniaxial (-), e=1.575, w=1.58, bire=0.0050.	Darapiosite 
Uniaxial (+), w=1.575, e=1.58, bire=0.0050.	Dmisteinbergite 
Uniaxial (-), e=1.559-1.592, w=1.57, bire=0.0110-0.0220.	Merrihueite 
Uniaxial (-), e=1.576, w=1.576, bire=0.0000.	Lawrencite 
Uniaxial (-), e=1.577, w=1.578, bire=0.0010.	Arctite 
Uniaxial (+), w=1.577, e=1.584, bire=0.0070.	Kafehydrocyanite *
Uniaxial (-), e=1.573-1.581, w=1.588-1.595, bire=0.0140-0.0150.	Metavoltine 
Uniaxial (?), b=1.577.	Namuwite 
Uniaxial (+), w=1.578, e=1.595, bire=0.0170.	Sabieite 
Uniaxial (-), e=1.578, w=1.585, bire=0.0070.	Sazykinaite-(Y) 
Uniaxial (-), e=1.564-1.595, w=1.568-1.602, bire=0.0040-0.0070.	Beryl 
Uniaxial (-), e=1.581, w=1.803, bire=0.2220.	Leisingite !
Uniaxial (-), e=1.582, w=1.591, bire=0.0090.	Malinkoite !
Uniaxial (-), e=1.582, w=1.592, bire=0.0100.	Torbernite 
Uniaxial (+), w=1.58-1.585, e=1.64-1.65, bire=0.0600-0.0650.	Cacoxenite 
Uniaxial (+), w=1.583, e=1.695, bire=0.1120.	Piypite 
Uniaxial (-), e=1.58-1.587, w=1.33-1.336, bire=0.2500-0.2510.	Nitratine 
Uniaxial (+), w=1.584, e=1.66, bire=0.0760.	Bystrite 
Uniaxial (-), e=1.585, w=1.59, bire=0.0050.	Iraqite-(La) 
Uniaxial (-), e=1.585, w=1.593, bire=0.0080.	Machatschkiite 
Uniaxial (-), e=1.585, w=1.612, bire=0.0270.	Natrouranospinite 
Uniaxial (-), e=1.585, w=1.63, bire=0.0450.	Trogerite 
Uniaxial (-), e=1.586, w=1.589, bire=0.0030.	Abenakiite-(Ce) 
Uniaxial (-), e=1.586, w=1.59, bire=0.0040.	Dusmatovite 
Uniaxial (-), e=1.586, w=1.59, bire=0.0040.	Pertlikite !
Uniaxial (-), e=1.586, w=1.589, bire=0.0030.	Trattnerite !
Uniaxial (-), w=1.586.	Tungusite 
Uniaxial (+), w=1.588, e=1.612, bire=0.0240.	Blatonite !
Uniaxial (+), w=1.588, e=1.604, bire=0.0160.	Walthierite 
Uniaxial (-), e=1.588-1.589, w=1.606-1.609, bire=0.0180-0.0200.	Phosphoellenbergerite !
Uniaxial (+), w=1.5886, e=1.5894, bire=0.0008.	Rinneite 
Uniaxial (-), e=1.589, w=1.596, bire=0.0070.	Wenkite 
Uniaxial (+), w=1.59, e=1.602, bire=0.0120.	Ammonioalunite 
Uniaxial (+), w=1.59, e=1.59, bire=0.0000.	Chlormanganokalite 
Uniaxial (-), e=1.59, w=1.675, bire=0.0850.	Chloromagnesite *
Uniaxial (-), e=1.59, w=1.633, bire=0.0430.	Cuprorivaite 
Uniaxial (-), e=1.59, w=1.63, bire=0.0400.	Hydrohonessite 
Uniaxial (-), e=1.584-1.596, w=1.604-1.607, bire=0.0110-0.0200.	Meta-autunite 
Uniaxial (-), e=1.59, w=1.63, bire=0.0400.	Wesselsite !
Uniaxial (-), e=1.59-1.592, w=1.624, bire=0.0320-0.0340.	Tisinalite 
Uniaxial (-), e=1.59-1.592, w=1.624, bire=0.0320-0.0340.	Zirsinalite 
Uniaxial (-), e=1.577-1.607, w=1.579-1.611, bire=0.0020-0.0040.	Sugilite 
Uniaxial (-), e=1.593, w=1.633, bire=0.0400.	Effenbergerite 
Uniaxial (+), w=1.59-1.597, e=1.599-1.607, bire=0.0090-0.0100.	Wardite 
Uniaxial (-), e=1.594, w=1.642, bire=0.0480.	Kampfite !
Uniaxial (-), e=1.595, w=1.617, bire=0.0220.	Karnasurtite-(Ce) 
Uniaxial (-), e=1.595, w=1.632, bire=0.0370.	Metanovacekite 
Uniaxial (+), w=1.596, e=1.608, bire=0.0120.	Alarsite !
Uniaxial (-), e=1.596, w=1.609, bire=0.0130.	Hilairite 
Uniaxial (+), w=1.596, e=1.604, bire=0.0080.	Jaffeite 
Uniaxial (-), e=1.597, w=1.599, bire=0.0020.	Holtedahlite 
Uniaxial (+), w=1.597, e=1.601, bire=0.0040.	Labyrinthite !
Uniaxial (-), e=1.596-1.598, w=1.814-1.816, bire=0.2180.	Rhodochrosite 
Uniaxial (+), e=1.597.	Schlossmacherite 
Uniaxial (+), w=1.598, e=1.598, bire=0.0000.	Combeite 
Uniaxial (-), w=1.598.	Orlymanite 
Uniaxial (+), w=1.598, e=1.6, bire=0.0020.	Rastsvetaevite !
Uniaxial (-), e=1.598, w=1.601, bire=0.0030.	Strontiowhitlockite 
Uniaxial (-), e=1.598, w=1.605, bire=0.0070.	Takovite 
Uniaxial (-), e=1.5984, w=1.775, bire=0.1766.	Cordylite-(Ce) 
Uniaxial (-), e=1.576-1.623, w=1.585-1.643, bire=0.0090-0.0200.	Zeunerite 
Uniaxial (+), w=1.6, e=1.605, bire=0.0050.	Bottinoite 
Uniaxial (-), e=1.6, w=1.62, bire=0.0200.	Chladniite 
Uniaxial (-), e=1.6, w=1.619, bire=0.0190.	Coombsite !
Uniaxial (-), w=1.6.	Molysite 
Uniaxial (-), e=1.6, w=1.885, bire=0.2850.	Sphaerocobaltite 
Uniaxial (-), e=1.57-1.633, w=1.785-1.875, bire=0.2150-0.2420.	Siderite 
Uniaxial (-), e=1.602, w=1.607, bire=0.0050.	Jamborite 
Uniaxial (+), w=1.603, e=1.639, bire=0.0360.	Calciocatapleiite 
Uniaxial (-), e=1.603, w=1.609, bire=0.0060.	Fluocerite-(La) 
Uniaxial (-), e=1.603, w=1.765, bire=0.1620.	Huanghoite-(Ce) 
Uniaxial (-), e=1.604, w=1.607, bire=0.0030.	Minehillite 
Uniaxial (+), w=1.604, e=1.615, bire=0.0110.	Sarcolite 
Uniaxial (-), e=1.605, w=1.626, bire=0.0210.	Bazzite 
Uniaxial (-), e=1.605, w=1.614, bire=0.0090.	Mopungite 
Uniaxial (-), e=1.601-1.611, w=1.612-1.62, bire=0.0090-0.0110.	Pezzottaite !
Uniaxial (+), w=1.606, e=1.62, bire=0.0140.	Saryarkite-(Y) 
Uniaxial (-), e=1.606, w=1.608, bire=0.0020.	Sogdianite 
Uniaxial (-), e=1.606, w=1.611, bire=0.0050.	Turkestanite !
Uniaxial (-), e=1.607, w=1.612, bire=0.0050.	Pyatenkoite-(Y) !
Uniaxial (+), w=1.606-1.61, e=1.61-1.613, bire=0.0030-0.0040.	Eudialyte 
Uniaxial (-), e=1.608, w=1.642, bire=0.0340.	Metakahlerite 
Uniaxial (+), w=1.608, e=1.611, bire=0.0030.	Raslakite !
Uniaxial (-), e=1.598-1.619, w=1.603-1.628, bire=0.0050-0.0090.	Carbonate-hydroxylapatite ?
Uniaxial (-), e=1.608-1.609, w=1.637-1.641, bire=0.0290-0.0320.	Metaheinrichite 
Uniaxial (-), e=1.609, w=1.708, bire=0.0990.	Daqingshanite-(Ce) 
Uniaxial (-), e=1.607-1.611, w=1.612-1.618, bire=0.0050-0.0070.	Fluocerite-(Ce) 
Uniaxial (+), w=1.609, e=1.63, bire=0.0210.	Narsarsukite 
Uniaxial (-), e=1.609-1.61, w=1.62-1.623, bire=0.0110-0.0130.	Khanneshite 
Uniaxial (-), e=1.61, w=1.615, bire=0.0050.	Arapovite !
Uniaxial (+), w=1.61, e=1.613, bire=0.0030.	Dualite !
Uniaxial (-), e=1.61, w=1.83, bire=0.2200.	Gaspeite 
Uniaxial (+), w=1.61, e=1.619, bire=0.0090.	Voronkovite !
Uniaxial (-), e=1.611, w=1.705, bire=0.0940.	Bechererite !
Uniaxial (-), e=1.611, w=1.618, bire=0.0070.	Mogovidite !
Uniaxial (+), w=1.612, e=1.615, bire=0.0030.	Ikranite !
Uniaxial (?), a=1.615, b=1.627, bire=0.0120.	Burbankite 
Uniaxial (-), e=1.615, w=1.622, bire=0.0070.	Fuenzalidaite 
Uniaxial (?), a=1.615, b=1.635, bire=0.0200.	Honessite 
Uniaxial (-), e=1.615, w=1.637, bire=0.0220.	Mitscherlichite 
Uniaxial (-), e=1.6155, w=1.6785, bire=0.0630.	Carbonate-fluorapatite ?
Uniaxial (-), e=1.616, w=1.62, bire=0.0040.	Feklichevite !
Uniaxial (-), e=1.617, w=1.644, bire=0.0270.	Metakirchheimerite 
Uniaxial (+), w=1.618, e=1.626, bire=0.0080.	Alluaivite 
Uniaxial (+), w=1.618, e=1.623, bire=0.0050.	Crandallite 
Uniaxial (+), w=1.618, e=1.63, bire=0.0120.	Gainesite 
Uniaxial (-), e=1.618, w=1.628, bire=0.0100.	Golyshevite !
Uniaxial (+), w=1.618, e=1.625, bire=0.0070.	Gorceixite 
Uniaxial (-), e=1.6186, w=1.6221, bire=0.0035.	Ferrokentbrooksite !
Uniaxial (-), e=1.619, w=1.622, bire=0.0030.	Calciohilairite 
Uniaxial (-), e=1.619, w=1.621, bire=0.0020.	Gillespite 
Uniaxial (-), e=1.619, w=1.623, bire=0.0040.	Olgite ?
Uniaxial (-), e=1.619, w=1.625, bire=0.0060.	Stoppaniite !
Uniaxial (+), w=1.62, e=1.63, bire=0.0100.	Goyazite 
Uniaxial (-), e=1.62, w=1.623, bire=0.0030.	Merrillite 
Uniaxial (-), e=1.62, w=1.623, bire=0.0030.	Merrillite-(Ca) *
Uniaxial (-), e=1.62, w=1.623, bire=0.0030.	Merrillite-(Y) *
Uniaxial (-), e=1.612-1.63, w=1.631-1.655, bire=0.0190-0.0250.	Dravite !
Uniaxial (-), e=1.621, w=1.637, bire=0.0160.	Liddicoatite !
Uniaxial (+), w=1.6215, e=1.625, bire=0.0035.	Stornesite-(Y) !
Uniaxial (-), e=1.622, w=1.708, bire=0.0860.	Scacchite 
Uniaxial (-), e=1.62-1.625, w=1.62-1.641, bire=0.0000-0.0160.	Novacekite 
Uniaxial (-), e=1.623, w=1.628, bire=0.0050.	Bario-olgite !
Uniaxial (-), e=1.623, w=1.628, bire=0.0050.	Kentbrooksite !
Uniaxial (-), e=1.623, w=1.64, bire=0.0170.	Schulenbergite 
Uniaxial (-), e=1.623, w=1.64, bire=0.0170.	Zn-Schulenbergite !
Uniaxial (-), e=1.623, w=1.643, bire=0.0200.	Zussmanite 
Uniaxial (-), e=1.615-1.632, w=1.635-1.65, bire=0.0180-0.0200.	Elbaite !
Uniaxial (-), e=1.624, w=1.646, bire=0.0220.	Hydroxyuvite !
Uniaxial (-), e=1.624, w=1.65, bire=0.0260.	Magnesiofoitite !
Uniaxial (+), w=1.624, e=1.626, bire=0.0020.	Metatorbernite 
Uniaxial (-), e=1.624, w=1.645, bire=0.0210.	Rossmanite !
Uniaxial (+), w=1.624, e=1.636, bire=0.0120.	Selwynite 
Uniaxial (-), e=1.624-1.626, w=1.635, bire=0.0090-0.0110.	Alumoakermanite !
Uniaxial (?), a=1.625, b=1.625, bire=0.0000.	Arsenocrandallite 
Uniaxial (-), e=1.625, w=1.85, bire=0.2250.	Smithsonite 
Uniaxial (-), e=1.6254, w=1.6279, bire=0.0025.	Khomyakovite !
Uniaxial (+), w=1.624-1.627, e=1.653-1.658, bire=0.0290-0.0310.	Wadeite 
Uniaxial (-), e=1.626, w=1.629, bire=0.0030.	Manganokhomyakovite !
Uniaxial (-), e=1.626, w=1.65, bire=0.0240.	Metazeunerite 
Uniaxial (-), e=1.626, w=1.629, bire=0.0030.	Whitlockite 
Uniaxial (+), w=1.627, e=1.645, bire=0.0180.	Bobtraillite !
Uniaxial (-), e=1.627, w=1.663, bire=0.0360.	Kamphaugite-(Y) 
Uniaxial (-), e=1.628, w=1.635, bire=0.0070.	Sweetite 
Uniaxial (+), w=1.629, e=1.639, bire=0.0100.	Ashoverite 
Uniaxial (+), w=1.629, e=1.632, bire=0.0030.	Babefphite 
Uniaxial (-), e=1.629, w=1.629, bire=0.0000.	Kamaishilite 
Uniaxial (-), e=1.63, w=1.633, bire=0.0030.	Apatite *
Uniaxial (-), e=1.63, w=1.635, bire=0.0050.	Berezanskite !
Uniaxial (+/-), a=1.63, b=1.633, bire=0.0030.	Burtite 
Uniaxial (+), w=1.63, e=1.638, bire=0.0080.	Hauckite 
Uniaxial (-), e=1.63, w=1.726, bire=0.0960.	Takedaite 
Uniaxial (-), e=1.631, w=1.84, bire=0.2090.	Brizziite-III 
Uniaxial (-), e=1.631, w=1.84, bire=0.2090.	Brizziite-VII 
Uniaxial (-), e=1.631, w=1.636, bire=0.0050.	Calcioburbankite 
Uniaxial (+), w=1.631, e=1.652, bire=0.0210.	Faheyite 
Uniaxial (-), e=1.631, w=1.639, bire=0.0080.	Georgbarsanovite !
Uniaxial (-), e=1.625-1.638, w=1.648-1.65, bire=0.0120-0.0230.	Kazakovite 
Uniaxial (+), w=1.632, e=1.64, bire=0.0080.	Akermanite 
Uniaxial (-), e=1.632, w=1.634, bire=0.0020.	Kahlerite 
Uniaxial (-), e=1.592-1.672, w=1.611-1.664, bire=0.0080-0.0190.	Meliphanite 
Uniaxial (-), e=1.6325, w=1.63, bire=0.0025.	Apatite-(CaF) 
Uniaxial (+), w=1.631-1.635, e=1.646-1.649, bire=0.0140-0.0150.	Svanbergite 
Uniaxial (+), w=1.634, e=1.645, bire=0.0110.	Mccrillisite 
Uniaxial (-), e=1.635, w=1.653, bire=0.0180.	Belovite-(La) !
Uniaxial (-), e=1.635, w=1.645, bire=0.0100.	Carbokentbrooksite !
Uniaxial (-), e=1.635, w=1.686, bire=0.0510.	Mahnertite !
Uniaxial (-), e=1.635, w=1.654, bire=0.0190.	Olenite !
Uniaxial (-), e=1.635, w=1.668, bire=0.0330.	Rorisite 
Uniaxial (-), e=1.635, w=1.646, bire=0.0110.	Zapatalite 
Uniaxial (+), w=1.636, e=1.647, bire=0.0110.	Woodhouseite 
Uniaxial (-), e=1.633-1.64, w=1.66-1.672, bire=0.0270-0.0320.	Schorl !
Uniaxial (-), e=1.637, w=1.647, bire=0.0100.	Aminoffite 
Uniaxial (-), e=1.637, w=1.651, bire=0.0140.	Apatite-(SrOH) 
Uniaxial (-), e=1.637, w=1.649, bire=0.0120.	Fluorcaphite !
Uniaxial (-), e=1.637, w=1.648, bire=0.0110.	Johnsenite-(Ce) !
Uniaxial (-), e=1.637, w=1.648, bire=0.0110.	Zirsilite-(Ce) !
Uniaxial (-), e=1.615-1.66.	Eylettersite 
Uniaxial (-), e=1.6378, w=1.6494, bire=0.0116.	Taseqite !
Uniaxial (-), e=1.638, w=1.688, bire=0.0500.	Astrocyanite-(Ce) 
Uniaxial (-), e=1.639, w=1.646, bire=0.0070.	Kellyite 
Uniaxial (?), a=1.64, b=1.64, bire=0.0000.	Arsenogoyazite 
Uniaxial (-), e=1.64, w=1.66, bire=0.0200.	Belovite-(Ce) 
Uniaxial (+), w=1.64, e=1.663, bire=0.0230.	IMA2003-019 !
Uniaxial (-), e=1.64, w=1.653, bire=0.0130.	Jeremejevite 
Uniaxial (-), e=1.64, w=1.68, bire=0.0400.	Pyrosmalite-(Fe) 
Uniaxial (-), e=1.64, w=1.68, bire=0.0400.	Pyrosmalite-(Mn) 
Uniaxial (+), w=1.64, e=1.655, bire=0.0150.	Reidite !
Uniaxial (-), e=1.6406, w=1.645, bire=0.0044.	Oneillite !
Uniaxial (?), a=1.641, b=1.691, bire=0.0500.	Bandylite 
Uniaxial (-), e=1.641, w=1.694, bire=0.0530.	Spangolite 
Uniaxial (-), e=1.642, w=1.655, bire=0.0130.	Carlosruizite 
Uniaxial (-), e=1.642, w=1.653, bire=0.0110.	Chantalite 
Uniaxial (-), e=1.642, w=1.664, bire=0.0220.	Foitite !
Uniaxial (-), e=1.626-1.658, w=1.632-1.669, bire=0.0060-0.0110.	Melilite 
Uniaxial (-), e=1.644, w=1.651, bire=0.0070.	Apatite-(CaOH) 
Uniaxial (-), e=1.644, w=1.672, bire=0.0280.	Cualstibite 
Uniaxial (-), e=1.644, w=1.671, bire=0.0270.	Komkovite 
Uniaxial (+), w=1.644, e=1.664, bire=0.0200.	Tristramite 
Uniaxial (-), e=1.645, w=1.645, bire=0.0000.	Arsenogorceixite !
Uniaxial (-), e=1.645, w=1.751, bire=0.1060.	Claraite 
Uniaxial (+), w=1.646, e=1.647, bire=0.0010.	Braitschite-(Ce) 
Uniaxial (-), e=1.647, w=1.749, bire=0.1020.	Lemanskiite !
Uniaxial (-), e=1.648, w=1.6918, bire=0.0438.	Wickenburgite 
Uniaxial (-), e=1.649-1.65, w=1.652-1.655, bire=0.0030-0.0050.	Ellestadite-(Cl) 
Uniaxial (-), e=1.65, w=1.655, bire=0.0050.	Ellestadite-(F) 
Uniaxial (-), e=1.65, w=1.654, bire=0.0040.	Ellestadite-(OH) 
Uniaxial (+), w=1.65, e=1.69, bire=0.0400.	Kambaldaite 
Uniaxial (-), e=1.65, w=1.735, bire=0.0850.	Reevesite 
Uniaxial (-), e=1.65, w=1.67, bire=0.0200.	Uvite !
Uniaxial (+), w=1.644-1.658, e=1.697-1.709, bire=0.0510-0.0530.	Dioptase 
Uniaxial (?), a=1.649-1.653, b=1.649-1.653, bire=0.0000.	Harkerite 
Uniaxial (-), e=1.652, w=1.656, bire=0.0040.	Zhangpeishanite !
Uniaxial (+), w=1.653, e=1.675, bire=0.0220.	Plumbogummite 
Uniaxial (-), e=1.653, w=1.666, bire=0.0130.	Tienshanite 
Uniaxial (+), w=1.654, e=1.67, bire=0.0160.	Phenakite 
Uniaxial (+), w=1.654, e=1.703, bire=0.0490.	Rhabdophane-(La) 
Uniaxial (-), e=1.655, w=1.735, bire=0.0800.	Buergerite !
Uniaxial (-), e=1.655, w=1.66, bire=0.0050.	Fermorite 
Uniaxial (+/-), a=1.655, b=1.655, bire=0.0000.	Johnsomervilleite 
Uniaxial (-), e=1.655, w=1.68, bire=0.0250.	Sincosite 
Uniaxial (+), w=1.656, e=1.682, bire=0.0260.	Despujolsite 
Uniaxial (+), w=1.656, e=1.682, bire=0.0260.	Kosnarite 
Uniaxial (-), e=1.656, w=1.671, bire=0.0150.	Sterlinghillite 
Uniaxial (+), w=1.657, e=1.7, bire=0.0430.	Simonkolleite 
Uniaxial (-), e=1.66, w=1.682, bire=0.0220.	Deloneite-(Ce) !
Uniaxial (-), e=1.66, w=1.67, bire=0.0100.	Gehlenite 
Uniaxial (?), a=1.66, b=1.69, bire=0.0300.	Grayite 
Uniaxial (-), e=1.66, w=1.778, bire=0.1180.	Nordenskioldine 
Uniaxial (-), e=1.661, w=1.672, bire=0.0110.	Hardystonite 
Uniaxial (-), e=1.66-1.663, w=1.665-1.668, bire=0.0050.	Steenstrupine-(Ce) 
Uniaxial (-), e=1.6538-1.6697, w=1.6553-1.6789, bire=0.0015-0.0092.	Ellenbergerite 
Uniaxial (+), w=1.662, e=1.663, bire=0.0010.	Cahnite 
Uniaxial (+), w=1.662, e=1.756, bire=0.0940.	Rontgenite-(Ce) 
Uniaxial (-), e=1.663, w=1.6876, bire=0.0246.	Diaoyudaoite 
Uniaxial (+), w=1.664, e=1.672, bire=0.0080.	Gugiaite 
Uniaxial (+), w=1.666, e=1.747, bire=0.0810.	Petersite-(Y) 
Uniaxial (-), e=1.6675, w=1.675, bire=0.0075.	Apatite-(CaCl) 
Uniaxial (-), e=1.668, w=1.684, bire=0.0160.	Trembathite 
Uniaxial (-), e=1.669, w=1.687, bire=0.0180.	Feruvite !
Uniaxial (-), e=1.669, w=1.694, bire=0.0250.	Kuannersuite-(Ce) !
Uniaxial (-), e=1.67, w=1.7, bire=0.0300.	Okayamalite !
Uniaxial (+), w=1.67, e=1.691, bire=0.0210.	Orpheite 
Uniaxial (+), w=1.67-1.671, e=1.689-1.7, bire=0.0190-0.0290.	Hinsdalite 
Uniaxial (+), w=1.671, e=1.676, bire=0.0010.	Fillowite 
Uniaxial (+), w=1.672, e=1.751, bire=0.0790.	Qaqarssukite-(Ce) !
Uniaxial (-), e=1.672, w=1.683, bire=0.0110.	Verplanckite 
Uniaxial (+), w=1.674, e=1.739-1.75, bire=0.0650-0.0760.	Calciopetersite !
Uniaxial (-), e=1.674, w=1.685, bire=0.0110.	Pabstite 
Uniaxial (+), w=1.674, e=1.77, bire=0.0960.	Synchysite-(Ce) 
Uniaxial (+), e=1.67-1.678.	Thorbastnasite 
Uniaxial (+), w=1.676, e=1.757, bire=0.0810.	Parisite-(Ce) 
Uniaxial (+), w=1.6751-1.6813, e=1.685-1.691, bire=0.0097-0.0099.	Bazirite 
Uniaxial (+), w=1.679, e=1.754, bire=0.0750.	Parisite-(Nd) 
Uniaxial (-), e=1.679, w=1.704, bire=0.0250.	Schallerite 
Uniaxial (+), w=1.68, e=1.695, bire=0.0150.	Brockite 
Uniaxial (-), e=1.68, w=1.756, bire=0.0760.	Natisite 
Uniaxial (-), e=1.684, w=1.69, bire=0.0060.	Comblainite 
Uniaxial (-), e=1.684, w=1.687, bire=0.0030.	Johnbaumite 
Uniaxial (+), w=1.688, e=1.744, bire=0.0560.	Rhabdophane-(Ce) 
Uniaxial (-), e=1.688, w=1.698, bire=0.0100.	Weilerite 
Uniaxial (+), w=1.688, e=1.765, bire=0.0770.	Zalesiite !
Uniaxial (+), w=1.689, e=1.695, bire=0.0060.	Ilimaussite-(Ce) 
Uniaxial (+), w=1.694, e=1.701, bire=0.0070.	Florencite-(La) 
Uniaxial (+), w=1.697, e=1.704, bire=0.0070.	Muirite 
Uniaxial (-), e=1.698, w=1.706, bire=0.0080.	Svabite 
Uniaxial (-), e=1.699, w=1.702, bire=0.0030.	Fluorvesuvianite !
Uniaxial (-), e=1.7, w=1.7, bire=0.0000.	Alforsite 
Uniaxial (-), e=1.7, w=1.508-1.51, bire=0.1900-0.1920.	Magnesite 
Uniaxial (-), e=1.7, w=1.718, bire=0.0180.	Nelenite 
Uniaxial (-), e=1.7, w=1.708, bire=0.0080.	Turneaureite 
Uniaxial (+), w=1.701, e=1.782, bire=0.0810.	Agardite-(Y) 
Uniaxial (+), w=1.701, e=1.707, bire=0.0060.	Kemmlitzite 
Uniaxial (+), w=1.701, e=1.706, bire=0.0050.	Tuite !
Uniaxial (-), e=1.702, w=1.714, bire=0.0120.	Traskite 
Uniaxial (+), w=1.703, e=1.711, bire=0.0080.	Peprossiite-(Ce) 
Uniaxial (+), w=1.704, e=1.765, bire=0.0610.	Goudeyite 
Uniaxial (-), e=1.705, w=1.93, bire=0.2250.	Berndtite 
Uniaxial (+), w=1.705, e=1.708, bire=0.0030.	Diversilite-(Ce) !
Uniaxial (-), e=1.705, w=1.785, bire=0.0800.	Juanitaite !
Uniaxial (+), w=1.691-1.72, e=1.719-1.73, bire=0.0100-0.0280.	Willemite 
Uniaxial (+), w=1.707, e=1.722, bire=0.0150.	Amakinite 
Uniaxial (-), e=1.7-1.717, w=1.751-1.76, bire=0.0430-0.0510.	Wiserite 
Uniaxial (+), w=1.709, e=1.86, bire=0.1510.	Pretulite !
Uniaxial (-), e=1.71, w=1.753, bire=0.0430.	Haydeeite !
Uniaxial (-), e=1.71, w=1.77, bire=0.0600.	Zdenekite 
Uniaxial (-), e=1.711, w=1.723, bire=0.0120.	Fencooperite !
Uniaxial (-), w=1.712.	Palmierite 
Uniaxial (?), b=1.713.	Hidalgoite 
Uniaxial (-), e=1.714, w=1.733, bire=0.0190.	Hematolite 
Uniaxial (-), e=1.713-1.715, w=1.815-1.82, bire=0.1020-0.1050.	Jarosite 
Uniaxial (+), w=1.714, e=1.731, bire=0.0170.	Osarizawaite 
Uniaxial (-), e=1.715, w=1.721, bire=0.0060.	Bariosincosite !
Uniaxial (+), w=1.715, e=1.81, bire=0.0950.	Hydroxylbastnasite-(Nd) 
Uniaxial (+), w=1.715, e=1.728, bire=0.0130.	Jasmundite 
Uniaxial (+), w=1.715, e=1.802, bire=0.0870.	Xenotime-(Yb) !
Uniaxial (+), w=1.717, e=1.818, bire=0.1010.	Bastnasite-(Ce) 
Uniaxial (+), w=1.717, e=1.818, bire=0.1010.	Bastnasite-(La) 
Uniaxial (+), w=1.717, e=1.818, bire=0.1010.	Bastnasite-(Y) 
Uniaxial (-), e=1.698-1.736, w=1.702-1.742, bire=0.0040-0.0060.	Vesuvianite 
Uniaxial (+), w=1.718, e=1.746, bire=0.0280.	Holtstamite !
Uniaxial (+), w=1.719, e=1.733, bire=0.0140.	Bromellite 
Uniaxial (-), e=1.719, w=1.731, bire=0.0120.	Manganvesuvianite !
Uniaxial (-), e=1.719, w=1.721, bire=0.0020.	Satterlyite 
Uniaxial (?), a=1.72.	Droninoite !
Uniaxial (+), w=1.72, e=1.73, bire=0.0100.	Florencite-(Nd) 
Uniaxial (+), w=1.72, e=1.75, bire=0.0300.	Galileiite !
Uniaxial (-), e=1.72, w=1.73, bire=0.0100.	Melanocerite-(Ce) 
Uniaxial (+/-), a=1.72, b=1.72, bire=0.0000.	Parascorodite !
Uniaxial (-), e=1.72, w=1.724, bire=0.0040.	Tetrawickmanite 
Uniaxial (+), w=1.721, e=1.725, bire=0.0040.	Wiluite !
Uniaxial (+), w=1.721, e=1.816, bire=0.0950.	Xenotime-(Y) 
Uniaxial (-), e=1.72-1.723, w=1.68-1.681, bire=0.0400-0.0420.	Pyrochroite 
Uniaxial (+), w=1.722, e=1.777, bire=0.0550.	Magnesiotaaffeite-2N2S 
Uniaxial (-), e=1.722, w=1.757, bire=0.0350.	Vicanite-(Ce) 
Uniaxial (-), e=1.722-1.724, w=1.778-1.78, bire=0.0560.	Chromdravite !
Uniaxial (+), w=1.725, e=1.81, bire=0.0850.	Agardite-(Ce) !
Uniaxial (+), w=1.726, e=1.805, bire=0.0790.	Plumboagardite !
Uniaxial (-), w=1.727.	Kittatinnyite 
Uniaxial (-), e=1.728, w=1.734, bire=0.0060.	Proshchenkoite-(Y) !
Uniaxial (-), e=1.728, w=1.738, bire=0.0100.	Stottite 
Uniaxial (-), w=1.728.	Wallkilldellite 
Uniaxial (-), e=1.729, w=1.786, bire=0.0570.	Vanadiumdravite !
Uniaxial (-), e=1.73, w=1.97, bire=0.2400.	Dixenite 
Uniaxial (-), e=1.73, w=1.735, bire=0.0050.	Fluorcalciobritholite !
Uniaxial (+), w=1.73, e=1.81, bire=0.0800.	Mixite 
Uniaxial (-), e=1.731, w=1.755, bire=0.0240.	Congolite 
Uniaxial (+), w=1.724-1.738, e=1.746-1.758, bire=0.0200-0.0220.	Connellite 
Uniaxial (-), e=1.735, w=1.739, bire=0.0040.	Magnesiotaaffeite-6N3S !
Uniaxial (-), e=1.735, w=1.765, bire=0.0300.	Sherwoodite 
Uniaxial (+), w=1.738, e=1.752, bire=0.0140.	Buttgenbachite 
Uniaxial (+), w=1.739, e=1.745, bire=0.0060.	Arsenoflorencite-(Ce) 
Uniaxial (-), e=1.728-1.75, w=1.73-1.752, bire=0.0020.	Britholite-(Y) 
Uniaxial (+), w=1.74, e=1.75, bire=0.0100.	Arsenoflorencite-(La) *
Uniaxial (+), w=1.74, e=1.75, bire=0.0100.	Arsenoflorencite-(Nd) *
Uniaxial (+), w=1.74.	Cetineite 
Uniaxial (+/-), a=1.73-1.75, b=1.73-1.75, bire=0.0000.	Coffinite 
Uniaxial (-), e=1.74, w=1.8, bire=0.0600.	Mongolite 
Uniaxial (-), e=1.74, w=1.753, bire=0.0130.	Okanoganite-(Y) 
Uniaxial (-), e=1.74, w=1.802, bire=0.0620.	Quetzalcoatlite 
Uniaxial (-), e=1.741, w=1.747, bire=0.0060.	Akdalaite 
Uniaxial (+), w=1.745, e=1.765, bire=0.0200.	Cerchiaraite !
Uniaxial (-), e=1.745, w=1.81, bire=0.0650.	Mathewrogersite 
Uniaxial (+), w=1.747, e=1.776, bire=0.0290.	Fleischerite 
Uniaxial (+), w=1.747, e=1.776, bire=0.0290.	Florencite-(Ce) 
Uniaxial (-), e=1.748, w=1.774, bire=0.0260.	Waylandite 
Uniaxial (-), e=1.75, w=1.8, bire=0.0500.	Ammoniojarosite 
Uniaxial (-), e=1.75, w=1.84, bire=0.0900.	Chadwickite !
Uniaxial (-), e=1.75, w=1.763, bire=0.0130.	Gallobeudantite !
Uniaxial (-), e=1.75, w=1.83, bire=0.0800.	Natrojarosite 
Uniaxial (-), w=1.75.	Wallkilldellite-(Fe) !
Uniaxial (-), e=1.751, w=1.82, bire=0.0690.	Povondraite !
Uniaxial (-), e=1.752, w=1.854, bire=0.1020.	Tusionite 
Uniaxial (+), w=1.755, e=1.795, bire=0.0400.	Zinclipscombite !
Uniaxial (+), w=1.757, e=1.804, bire=0.0470.	Benitoite 
Uniaxial (+), w=1.757, e=1.76, bire=0.0030.	Mcgovernite 
Uniaxial (-), e=1.759, w=1.77, bire=0.0110.	Harrisonite !
Uniaxial (+), w=1.759-1.76, e=1.759-1.76, bire=0.0000.	Theophrastite 
Uniaxial (?), b=1.76.	Cappelenite-(Y) 
Uniaxial (-), e=1.76, w=1.768, bire=0.0080.	Corundum 
Uniaxial (+), w=1.76, e=1.87, bire=0.1100.	Hydroxylbastnasite-(Ce) 
Uniaxial (-), e=1.76, w=1.8, bire=0.0400.	Kapellasite !
Uniaxial (+), w=1.76, e=1.801, bire=0.0410.	Mallestigite !
Uniaxial (-), e=1.761, w=1.815, bire=0.0540.	Molybdophyllite 
Uniaxial (-), e=1.765, w=1.775, bire=0.0100.	Fresnoite 
Uniaxial (+), w=1.765, e=1.8, bire=0.0350.	Henritermierite 
Uniaxial (-), e=1.768, w=1.822, bire=0.0540.	Dorallcharite 
Uniaxial (-), e=1.769, w=1.803, bire=0.0340.	Cyrilovite 
Uniaxial (+/-), a=1.77, b=1.81, bire=0.0400.	Britholite-(Ce) 
Uniaxial (-), e=1.77, w=1.772, bire=0.0020.	Swedenborgite 
Uniaxial (-), e=1.773, w=1.778, bire=0.0050.	Nabokoite 
Uniaxial (+), w=1.765-1.784, e=1.78-1.787, bire=0.0030-0.0150.	Stillwellite-(Ce) 
Uniaxial (-), e=1.776, w=1.783, bire=0.0070.	Atlasovite 
Uniaxial (-), e=1.78, w=1.782, bire=0.0020.	Claringbullite 
Uniaxial (-), e=1.78, w=1.81, bire=0.0300.	Manganarsite 
Uniaxial (-), e=1.78, w=1.82, bire=0.0400.	Nanlingite 
Uniaxial (+), w=1.78, e=1.988, bire=0.2080.	Sitinakite 
Uniaxial (+), w=1.783, e=1.879, bire=0.0960.	Chernovite-(Y) 
Uniaxial (-), e=1.783, w=1.878, bire=0.0950.	Plumbojarosite 
Uniaxial (-), e=1.785, w=1.882, bire=0.0970.	Argentojarosite 
Uniaxial (+), w=1.786, e=1.8, bire=0.0140.	Ashburtonite 
Uniaxial (-), e=1.786, w=1.792, bire=0.0060.	Fluorbritholite-(Ce) 
Uniaxial (-), e=1.786, w=1.795, bire=0.0090.	Szymanskiite 
Uniaxial (-), e=1.787.	Turtmannite !
Uniaxial (-), e=1.787-1.789, w=1.815-1.816, bire=0.0270-0.0280.	Painite 
Uniaxial (-), w=1.79.	Ferrotaaffeite-6N3S 
Uniaxial (+/-), a=1.79, b=1.79, bire=0.0000.	Philipsbornite 
Uniaxial (+), w=1.797, e=1.806, bire=0.0090.	Martyite !
Uniaxial (-), e=1.797, w=1.802, bire=0.0050.	Sabelliite !
Uniaxial (+), w=1.799, e=1.826, bire=0.0270.	Stishovite 
Uniaxial (+), w=1.8, e=1.81, bire=0.0100.	Ferronigerite-2N1S 
Uniaxial (+), w=1.8, e=1.8, bire=0.0000.	Kinichilite 
Uniaxial (-), e=1.78-1.82, w=1.79-1.84, bire=0.0100-0.0200.	Thorite 
Uniaxial (+), w=1.802, e=1.814, bire=0.0120.	Magnesionigerite-2N1S 
Uniaxial (+), w=1.802, e=1.814, bire=0.0120.	Magnesionigerite-6N6S !
Uniaxial (-), e=1.803, w=1.853, bire=0.0500.	Magnesiohogbomite-2N3S 
Uniaxial (-), e=1.803, w=1.853, bire=0.0500.	Magnesiohogbomite-6N6S 
Uniaxial (+), e=1.805.	Kraisslite 
Uniaxial (+), w=1.806-1.81, e=1.81-1.82, bire=0.0040-0.0100.	Cerite-(Ce) 
Uniaxial (+), w=1.81, e=1.82, bire=0.0100.	Cerite-(La) !
Uniaxial (+), w=1.81, e=2.02, bire=0.2100.	Gaudefroyite 
Uniaxial (-), e=1.81, w=1.82-1.83, bire=0.0100-0.0200.	Zairite 
Uniaxial (+), w=1.812, e=1.824, bire=0.0120.	Yecoraite 
Uniaxial (+), w=1.81-1.816, e=1.812-1.822, bire=0.0020-0.0060.	Aluminocerite-(Ce) !
Uniaxial (-), e=1.803-1.823, w=1.848-1.853, bire=0.0300-0.0450.	Magnesiohogbomite-2N2S 
Uniaxial (+), w=1.815, e=1.91, bire=0.0950.	Holfertite !
Uniaxial (-), e=1.815, w=1.845, bire=0.0300.	Hyttsjoite !
Uniaxial (-), e=1.817, w=1.825, bire=0.0080.	Herbertsmithite !
Uniaxial (-), e=1.817, w=1.858, bire=0.0410.	Springcreekite !
Uniaxial (-), e=1.82, w=2, bire=0.1800.	Bismite 
Uniaxial (-), e=1.82, w=1.82, bire=0.0000.	Hydroniumjarosite 
Uniaxial (-), e=1.827, w=1.852, bire=0.0250.	Ferrohogbomite-2N2S !
Uniaxial (-), e=1.83, w=1.86, bire=0.0300.	Asbecasite 
Uniaxial (-), e=1.83, w=1.85, bire=0.0200.	Beaverite 
Uniaxial (+), w=1.81-1.85, e=1.84-1.88, bire=0.0300.	Chromatite 
Uniaxial (-), e=1.832, w=1.878, bire=0.0460.	Zincohogbomite-2N2S !
Uniaxial (-), e=1.833, w=1.837, bire=0.0040.	Jeanbandyite 
Uniaxial (+), w=1.84, e=1.846, bire=0.0060.	Percleveite-(Ce) !
Uniaxial (+), w=1.843, e=1.848, bire=0.0050.	Paratacamite 
Uniaxial (-), e=1.85, w=1.98, bire=0.1300.	Diaboleite 
Uniaxial (-), e=1.85, w=1.87, bire=0.0200.	Dussertite 
Uniaxial (+), w=1.85, e=1.93, bire=0.0800.	Zemannite 
Uniaxial (+), w=1.857, e=1.875, bire=0.0180.	Orebroite-III 
Uniaxial (+), w=1.857, e=1.875, bire=0.0180.	Orebroite-VIII 
Uniaxial (+), w=1.856-1.859, e=1.876-1.882, bire=0.0200-0.0230.	Franciscanite-VIII 
Uniaxial (+), w=1.859, e=1.876, bire=0.0170.	Franciscanite-III 
Uniaxial (-), e=1.862, w=1.872, bire=0.0100.	Benauite !
Uniaxial (+), w=1.864, e=1.88, bire=0.0160.	Welinite-III 
Uniaxial (+), w=1.864, e=1.88, bire=0.0160.	Welinite-VIII 
Uniaxial (+), w=1.87, e=1.92, bire=0.0500.	Paraniite-(Y) 
Uniaxial (+), w=1.88, e=1.884, bire=0.0040.	Morelandite 
Uniaxial (?), b=1.86-1.91.	Bystromite 
Uniaxial (+), w=1.89, e=2, bire=0.1100.	Denningite 
Uniaxial (?), a=1.8-2.	Kleberite *
Uniaxial (-), e=1.9, w=1.6-1.9, bire=0.0000-0.3000.	Krivovichevite !
Uniaxial (+), w=1.9, e=2.12, bire=0.2200.	Trippkeite 
Uniaxial (+), w=1.9, e=1.9, bire=0.0000.	Wakefieldite-(La) !
Uniaxial (+), w=1.903, e=1.946, bire=0.0430.	Laurelite 
Uniaxial (-), e=1.91, w=2.15, bire=0.2400.	Bismoclite 
Uniaxial (-), e=1.91, w=2.15, bire=0.2400.	Daubreeite 
Uniaxial (+), w=1.91, e=1.945, bire=0.0350.	Ganomalite 
Uniaxial (-), e=1.912, w=1.92, bire=0.0080.	Burnsite !
Uniaxial (-), e=1.91-1.92, w=1.93, bire=0.0100-0.0200.	Ingersonite 
Uniaxial (+), w=1.918-1.92, e=1.934-1.937, bire=0.0160-0.0170.	Scheelite 
Uniaxial (-), e=1.92, w=2.092, bire=0.1720.	Rosiaite !
Uniaxial (-), e=1.926, w=2.041, bire=0.1150.	Cumengite 
Uniaxial (+), w=1.928, e=2.002, bire=0.0740.	Belkovite !
Uniaxial (-), e=1.928, w=1.935, bire=0.0070.	Phosphohedyphane !
Uniaxial (+), w=1.913-1.945, e=1.923-1.971, bire=0.0100-0.0260.	Nasonite 
Uniaxial (-), e=1.93, w=1.93, bire=0.0000.	Corkite 
Uniaxial (-), e=1.935, w=1.935-1.955, bire=0.0000-0.0200.	Kintoreite 
Uniaxial (-), e=1.94, w=2.09, bire=0.1500.	Hydrocerussite 
Uniaxial (-), e=1.92-1.96, w=1.967-2.015, bire=0.0470-0.0550.	Zircon 
Uniaxial (-), e=1.943, w=1.957, bire=0.0140.	Beudantite 
Uniaxial (-), e=1.95, w=2.055, bire=0.1050.	Feitknechtite 
Uniaxial (+), w=1.93-1.97, e=1.98-2.03, bire=0.0500-0.0600.	Hafnon 
Uniaxial (+), e=1.95.	Ordonezite 
Uniaxial (-), e=1.955, w=1.975, bire=0.0200.	Segnitite 
Uniaxial (-), e=1.95-1.98, w=2.31-2.35, bire=0.3600-0.3700.	Geikielite 
Uniaxial (-), e=1.967, w=1.977, bire=0.0100.	Dugganite 
Uniaxial (+), w=1.952-1.984, e=1.971-2.01, bire=0.0190-0.0260.	Dilithium *
Uniaxial (+), w=1.97, e=2.65, bire=0.6800.	Calomel 
Uniaxial (-), e=1.97, w=2, bire=0.0300.	Ernienickelite 
Uniaxial (-), w=1.97.	Graulichite-(Ce) !
Uniaxial (-), e=1.97, w=2, bire=0.0300.	Jagoite 
Uniaxial (+), w=1.974, e=1.984, bire=0.0100.	Powellite 
Uniaxial (+/-), a=1.948-2.01, b=1.958-2.03, bire=0.0100-0.0200.	Hedyphane 
Uniaxial (-), e=1.99, w=2.01, bire=0.0200.	Armangite 
Uniaxial (+), w=1.99, e=2.08, bire=0.0900.	Ekatite !
Uniaxial (+), w=1.99, e=1.85, bire=0.1400.	Keystoneite 
Uniaxial (?), a=1.99, b=1.99, bire=0.0000.	Ottensite !
Uniaxial (-), e=1.999, w=2.017, bire=0.0180.	Mattheddleite 
Uniaxial (+), w=1.99-2.01, e=2.093-2.1, bire=0.0900-0.1030.	Cassiterite 
Uniaxial (+), w=2, e=2, bire=0.0000.	Dreyerite 
Uniaxial (-), w=1.93-2.07.	Graphite 
Uniaxial (+), w=2, e=2, bire=0.0000.	Grechishchevite 
Uniaxial (-), e=2, w=2.03, bire=0.0300.	Pseudoboleite 
Uniaxial (?), a=2.	Stenhuggarite 
Uniaxial (?), b=2.	Wakefieldite-(Ce) 
Uniaxial (+), w=2, e=2.14, bire=0.1400.	Wakefieldite-(Y) 
Uniaxial (+), w=2.01, e=2.01, bire=0.0000.	Argutite 
Uniaxial (+), w=2.013, e=2.029, bire=0.0160.	Zincite 
Uniaxial (-), e=2.015, w=2.033, bire=0.0180.	Barysilite 
Uniaxial (-), e=2.02, w=2.03, bire=0.0100.	Nierite 
Uniaxial (-), e=2.025, w=2.045, bire=0.0200.	Simpsonite 
Uniaxial (-), e=2.04, w=2.15, bire=0.1100.	Matlockite 
Uniaxial (-), e=2.049, w=2.059, bire=0.0100.	Pyromorphite 
Uniaxial (-), e=2.05, w=2.06, bire=0.0100.	Cuzticite 
Uniaxial (-), e=2.059, w=2.125, bire=0.0660.	Yedlinite 
Uniaxial (+), w=2.06, e=2.11, bire=0.0500.	Abhurite 
Uniaxial (-), w=2.085.	Pittongite !
Uniaxial (-), e=2.1, w=2.18, bire=0.0800.	Cuprotungstite 
Uniaxial (-), e=2.1, w=2.26, bire=0.1600.	Hydrohetaerolite 
Uniaxial (-), e=2.1, w=2.3, bire=0.2000.	Iltisite !
Uniaxial (-), w=2.1.	Priderite 
Uniaxial (-), e=2.1.	Schuetteite 
Uniaxial (+), w=2.114, e=2.14, bire=0.0260.	Phosgenite 
Uniaxial (+), w=2.12, e=2.16, bire=0.0400.	Hiarneite !
Uniaxial (?), b=2.12.	Melanostibite 
Uniaxial (-), e=2.12, w=2.155, bire=0.0350.	Parakhinite 
Uniaxial (-), e=2.12, w=2.32, bire=0.2000.	Santanaite 
Uniaxial (-), e=2.129, w=2.144, bire=0.0150.	Mimetite 
Uniaxial (+), w=2.13, e=2.21, bire=0.0800.	Penfieldite 
Uniaxial (+), w=2.13, e=2.18, bire=0.0500.	Sphaerobismoite 
Uniaxial (-), e=2.14, w=2.34, bire=0.2000.	Hetaerolite 
Uniaxial (-), e=2.15, w=2.46, bire=0.3100.	Hausmannite 
Uniaxial (+), w=2.16, e=1.94, bire=0.2200.	Baotite 
Uniaxial (+), w=2.18, e=2.28, bire=0.1000.	Squawcreekite ?
Uniaxial (+), w=2.19, e=2.21, bire=0.0200.	Kleinite 
Uniaxial (+), w=2.19, e=2.21, bire=0.0200.	Mackayite 
Uniaxial (-), e=2.19, w=2.27, bire=0.0800.	Stolzite 
Uniaxial (+), w=2.19, e=2.33, bire=0.1400.	Tripuhyite 
Uniaxial (-), e=2.2, w=2.3, bire=0.1000.	Fergusonite-(Ce) *
Uniaxial (-), e=2.2, w=2.3, bire=0.1000.	Fergusonite-(Nd) *
Uniaxial (+), w=2.2, e=2.2, bire=0.0000.	Tetrarooseveltite 
Uniaxial (+), w=2.21, e=2.22, bire=0.0100.	Iodargyrite 
Uniaxial (-), e=2.21, w=2.48, bire=0.2700.	Pyrophanite 
Uniaxial (+/-), a=2.21, b=2.213, bire=0.0030.	Zavaritskite 
Uniaxial (+), w=2.19-2.27, e=2.3-2.36, bire=0.0900-0.1100.	Calzirtite 
Uniaxial (-), e=2.25, w=2.32, bire=0.0700.	Ecdemite 
Uniaxial (-), e=2.25, w=2.35, bire=0.1000.	Plattnerite 
Uniaxial (+), w=2.27, e=2.42, bire=0.1500.	Tapiolite-(Fe) 
Uniaxial (-), e=2.2847, w=2.2949, bire=0.0102.	Finnemanite 
Uniaxial (-), e=2.3, w=2.4, bire=0.1000.	Chiluite 
Uniaxial (-), e=2.3, w=2.4, bire=0.1000.	Pottsite 
Uniaxial (+), e=2.3.	Schiavinatoite !
Uniaxial (+), w=2.3, e=2.5, bire=0.2000.	Tillmannsite !
Uniaxial (-), e=2.304, w=2.402, bire=0.0980.	Wulfenite 
Uniaxial (-), e=2.31, w=2.36, bire=0.0500.	Langbanite 
Uniaxial (-), e=2.32, w=2.39, bire=0.0700.	Asisite 
Uniaxial (?), a=2.33, b=2.37, bire=0.0400.	Dukeite !
Uniaxial (-), e=2.33, w=2.4, bire=0.0700.	Lorettoite ?
Uniaxial (-), e=2.35, w=2.416, bire=0.0660.	Vanadinite 
Uniaxial (+), w=2.356, e=2.378, bire=0.0220.	Wurtzite 
Uniaxial (-), e=2.373, w=2.388, bire=0.0150.	Landauite 
Uniaxial (?), a=2.4.	Minium 
Uniaxial (-), e=2.4, w=2.6, bire=0.2000.	Trechmannite 
Uniaxial (+/-), a=2.404, b=2.404, bire=0.0000.	Lonsdaleite 
Uniaxial (-), e=2.42, w=2.58, bire=0.1600.	Parkinsonite 
Uniaxial (+), w=2.476, e=2.485, bire=0.0090.	Changbaiite 
Uniaxial (-), e=2.488, w=2.561, bire=0.0730.	Anatase 
Uniaxial (+), w=2.5, e=2.55, bire=0.0500.	Chrombismite !
Uniaxial (-), e=2.5.	Senaite 
Uniaxial (+/-), a=2.506, b=2.529, bire=0.0230.	Greenockite 
Uniaxial (-), e=2.535, w=2.665, bire=0.1300.	Litharge 
Uniaxial (+), w=2.61, e=2.85, bire=0.2400.	Hypercinnabar 
Uniaxial (+), w=2.605-2.621, e=2.899-2.908, bire=0.2870-0.2940.	Rutile 
Uniaxial (+), w=2.654, e=2.967, bire=0.3130.	Moissanite 
Uniaxial (+/-), a=2.62-2.77, b=2.62-2.77, bire=0.0000.	Rambergite !
Uniaxial (-), e=2.72, w=2.73, bire=0.0100.	Chalcophanite 
Uniaxial (-), e=2.792, w=3.087-3.088, bire=0.2950-0.2960.	Proustite 
Uniaxial (-), e=2.881, w=3.084, bire=0.2030.	Pyrargyrite 
Uniaxial (+), w=2.905, e=3.256, bire=0.3510.	Cinnabar 
Uniaxial (-), e=2.87-2.94, w=3.15-3.22, bire=0.2800.	Hematite 
Uniaxial (+), w=3, e=4.04, bire=1.0400.	Selenium 

(* - Mineral name not approved by the IMA)
(! - New Dana classification number has been added or changed)
(? - IMA Discredited Mineral Species Name)

Refractive Index
  • Home
  • Isotropic
  • Uniaxial
  • Biaxial
  • Opague

Cleavage
  • No Cleavage
  • One Cleavage
  • Two Cleavages
  • Three+ Cleavages

Density
  • Metallic
  • Non-metallic

Hardness
  • Metallic
  • Non-metallic
  • Streak

Color
  • Black
  • Blue
  • Brown
  • Colorless
  • Gray
  • Green
  • Orange
  • Pink
  • Red
  • White
  • Yellow

Other Properties
  • Radioactivity
  • Xray Diffraction


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