Mineral Specimen Images (T)

Trogerite: H2(UO2)2(AsO4)2·8(H2O)  
Metazeunerite: Cu(UO2)2(AsO4)2·8(H2O)

Comments: Yellow crystals of trögerite with green metazeunerite.
Location: Walpurgis Flats, Weißer Hirsch Mine, Neustädtel, Schneeberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Trogtalite: CoSe2

Comments: Polished section (PPL). Grains of anhedral trogtalite (Tgt) partly replaced by a veinlet of sulfur-bearing berzelianite (Brz) in malachite-cemented (Mal) quartz (Qtz). (CanMin, v46:219).
Location: Thrust-Slice '2400' of the Musonoi Extension mine, Katanga, Democratic Republic of Congo. Scale: See Image.
© Canadian Mineralogist

Troilite: FeS  
Cohenite: (Fe,Ni,Co)3C  
Kamacite: alpha-(Fe,Ni)  
Taenite: gamma-(Fe,Ni)

Comments: Brown masses of troilite, with white cohenite, in kamacite/taenite matrix, in meteorite (polished section).
Location: Meteor Crater, Canyon Diablo, Coconino County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Troilite: FeS  
Kamacite: alpha-(Fe,Ni)  
Taenite: gamma-(Fe,Ni)

Comments: Polished and acid etched slice, with crust, illustrating Widmanstaaten lines, with taenite darker areas between kamacite crystals, with tarnished troilite inclusions, in fine octahedrite meteorite.
Location: Gibeon Meteorite, found 1836, Great Namaqualand, Hardap, Namibia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Trolleite: Al4(PO4)3(OH)3  
Berlinite: AlPO4

Comments: Pinkish crystalline berlinite with blue trolleite.
Location: Ijzer Mine, Vestana, Christiansted, Varmland, Sweden. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Trolleite: Al4(PO4)3(OH)3  
Lazulite: MgAl2(PO4)2(OH)2

Comments: Pale blue trolleite with darker blue lazulite.
Location: Champion Mine, White Mountains, Mono County, California. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Trolleite: Al4(PO4)3(OH)3  
Viseite: Ca10Al24(SiO4)6(PO4)7O22F3·72(H2O) (?)

Comments: Chalky white massive viseite with bluish trolleite.
Location: Champion Sillimanite Mine, near Laws, Mono County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Trona: Na3(CO3)(HCO3)·2(H2O)  
Nahcolite: NaHCO3

Comments: Massive, coarse-grained Trona from a drill core of the upper mixed-layer Saltbed. White areas are nahcolite alteration.
Location: Searles Lake, San Bernardino County, California, USA. Scale: 12 x 15 cm.
© Dave Barthelmy

Truscottite: (Ca,Mn++)14Si24O58(OH)8·2(H2O)

Comments: Whitish pearly scaly massive truscottite.
Location: Lebong Donok Mine, Benkeelen, Sumatra Island, Indonesia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tsaregorodtsevite: N(CH3)4AlSi5O12

Comments: Translucent tsaregorodtsevite crystals, with small quartz crystals, on mica schist.
Location: Near Mount Yaruta, Man-Khambo Range, Republic of Komi, Near-Polar Urals, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tschermakite: [ ]Ca2(Mg3AlFe+++)Si6Al2O22(OH)2

Comments: Dark green tschermakite with compact divergent structure.
Location: Elba, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tschermigite: (NH4)Al(SO4)2·12(H2O)

Comments: Clear crystal of tschernichite in a vug.
Location: Goble, Colombia County, Oregon, USA. Scale: Not Given.
© Thomas Witzke / Abraxas-Verlag

Tschermigite: (NH4)Al(SO4)2·12(H2O)  
Berndtite: SnS2

Comments: Yellow crystalline berndtite on tschermigite.
Location: Shamokin, Northumberland County, Pennsylvania, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tschernichite: (Ca,Na)(Si6Al2)O16·4-8(H2O)

Comments: Clear crystal of tschernichite in a vug.
Location: Goble, Colombia County, Oregon, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Tschortnerite: Ca4(Ca,Sr,K,Ba)3Cu3(OH)8[Si12Al12O48]·x(H2O), x>=20

Comments: Scanning electron micrograph of tschortnerite. (AmMin 83:608).
Location: Ca-rich xenolith at the Bellberg volcano near Mayen, Eifel, Germany. Scale: Scale Bar 20 µm.
© American Mineralogist

Tsepinite-Ca: (Ca,K,Na,[ ])2(Ti,Nb)2(Si4O12)(OH,O)2·4(H2O)

Comments: Groups of tan colored parallel prismatic tsepinitie-Ca crystals associated with eudialyte and arfvedsonite.
Location: Hackmann Valley, Yukspor Mountain, Khibiny, Kola, Russia. Scale: See Image.
© Rruff Database

Tsepinite-K: (K,Ba,Na)2(Ti,Nb)2(Si4O12)(OH,O)2·3(H2O)

Comments: Light orange acicular crystals of tsepinite_K.
Location: Karnasurt Mt, Lovozero Massif, Kola Peninsula, Murmanskaya Oblast'; Northern Region,. Scale: See Image.
© Rruff Database

Tsepinite-Na: (Na,H3O,K,Sr,Ba)2(Ti,Nb)2[Si4O12](OH,O)2·3(H2O)

Comments: Brown, needle-like crystals of tsepinite-Na in matrix.
Location: Lephke-Nelm, Lovozero, Kola, Russia. Scale: Crystal size 3 mm.
© Tom Loomis / Dakota Matrix

Tsepinite-Na: (Na,H3O,K,Sr,Ba)2(Ti,Nb)2[Si4O12](OH,O)2·3(H2O)

Comments: Subparallel pale tan prismatic tsepinite-Na crystals with vitreous luster.
Location: Lepkhe-Nel'm Mt. (Lepkhe-Nelm Mt.), Seidozero Lake, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: See Image.
© Rruff Database

Tsepinite-Sr: (Sr,Ba,K)(Ti,Nb)2(Si4O12)(OH,O)2·3(H2O)

Comments: BSE image of crystals of tsepinite-Sr with Ba-enriched (light parts) margin zones..
Location: Mt. Eveslogchorr, Khibiny. Russia.. Scale: See Image.
© New Data on Minerals. M., 2005. Vol. 40