Mineral Specimen Images (T)

Terlinguacreekite: Hg++3O2Cl2

Comments: Reddish brown crystalline aggregates of eglestonite? or montroydite? in calcite matrix covered with yellow crusts of terlinguacreekite.
Location: Mariposa Mine, Terlingua, Brewster County, Texas, USA. Scale: See Image.
© Jeff Weissman / Photographic Guide to Mineral Species

Terlinguaite: Hg+Hg++ClO

Comments: Beige, massive granular crystals of terlinguaite on pink calcite.
Location: Mariposa mine, Terlingua, Terlingua district, Brewster Co., Texas, USA. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Ternesite: Ca5(SiO4)2SO4

Comments: Pale blue crystalline ternesite.
Location: Bellerberg, Eifel, Rheinland-Pflaz, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Terranovaite: (Na,Ca)8(Si68Al12)O160·29(H2O)

Comments: B&W image of terranovaite crystal. (AmMin, v82:423).
Location: Jurassic Ferrar dolerites of Mt. Adamson, Northern Victoria Land, Antarctica. Scale: See Image.
© American Mineralogist

Terskite: Na4ZrSi6O15(OH)2·2(H2O)

Comments: Pale violet terskite fragment.
Location: Mount Rasvumchorr, Khibiny Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tertschite: Ca4B10O19·20(H2O)

Comments: Bright white fibrous powdery tertschite.
Location: Kurtpinari Mine, Faras, Balikesir, Turkey. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Teruggite: Ca4MgAs2B12O22(OH)12·12(H2O)

Comments: Opaque rounded teruggite aggregate.
Location: Loma Blanca, Jujuy, Argentina. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tetra-auricupride: AuCu

Comments: Golden brown crystals of tetra-auricupride on matrix.
Location: Karabash (Karabasch), Chelyabinsk Oblast', Urals Region, Russia. Scale: Picture size 2 mm.
© Thomas Witzke / Abraxas-Verlag

Tetradymite: Bi2Te2S

Comments: Gray metallic foliated tetradymite in quartz.
Location: Mangfallberg, Boliden, Vasterbotten, Sweden. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tetraferriannite: K(Fe++,Mg)3(Fe+++,Al)Si3O10(OH)2

Comments: Brownish black crystal fragment of tetraferriannite showing the micaceous cleavage.
Location: Bancroft District, Hastings Co., Ontario, Canada. Scale: Sample Size 1 cm.
© Jeff Weissman / Photographic Guide to Mineral Species

Tetraferriphlogopite: KMg3Fe+++Si3O10(OH)2

Comments: Euhedral complete tabular crystal of dark brown tetraferriphlogopite with calcite, yellow-green apatite-(CaF), metallic chalcopyrite, and dark magnetite.
Location: Zheleznyi Mine (Iron Mine), Kovdor Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Crystal Size 3.5x3x1.5 cm.
© Pavel M. Kartashov

Tetraferroplatinum: PtFe

Comments: Tetraferroplatinum (dark grey) intergrown with, and rimmed by Pt-Fe alloy (bright) ranging in composition from Pt1.6Fe to Pt2.2Fe. (CanMin v43:1711).
Location: PGM grains from stream sediments, Eastern Bushveld Complex, South Africa. Scale: See Image.
© Canadian Mineralogist

Tetrahedrite: (Cu,Fe)12Sb4S13

Comments: A very brilliant tetrahedrite group with the tops of the crystals covered in chalcopyrite.
Location: Casapalca, Lima, Peru. Scale: 8 x 6 cm.
© Fabre Minerals

Tetrahedrite: (Cu,Fe)12Sb4S13

Comments: Bright sharp metallic tetrahedrite crystals to 1 cm in size on pinkish to colorless crystalline calcite matrix.
Location: Cavnic (Kapnik), Maramures, Romania. Scale: 14 x 11 x 3 cm.
© Dan Weinrich

Tetranatrolite: Na2[Al2Si3O10]·2(H2O)  
Gonnardite: Na2CaAl4Si6O20·7(H2O)

Comments: White, pseudocubic crystals of tetranatrolite (gonnardite) on matrix.
Location: Point of Rocks Mesa, Colfax County, New Mexico, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Tetrarooseveltite: BiAsO4

Comments: Light-yellow, earthy tetrarooseveltite.
Location: Moldava, Teplice (Teplitz), Krusné Hory (Erzgebirge), Severoceský Kraj, Bohemia, Czech Republic. Scale: Picture size 4.5 mm.
© Thomas Witzke / Abraxas-Verlag

Tetrataenite: FeNi

Comments: a) B&W reflected-light image of lightly etched tetraraenite (Tt), cloudy taenite (CT), and kamacite (K) and b) X-polarizer image showing unetched optical anisotropy and irregular crystals in the tetrataenite rim.
Location: Estherville mesosiderite meteorite. AmMin v65:624. Scale: Scale Bar 50 µm.
© American Mineralogist

Tetrawickmanite: Mn++Sn++++(OH)6

Comments: Tan, pseudoctahedral crystal of tetrawickmanite on matrix.
Location: Foote mine, Kings Mountain, Cleveland County, North Carolina, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Thalenite-(Y): Y3Si3O10(OH)

Comments: Subhedral, brownish thalenite-(Y) crystal embedded in a sucrosic matrix of yttrian fluorite.
Location: Hundholmen, Tysfjord, Norway. Scale: 0.5 cm.
© Sigurd Stordal / University of Tromsoe

Thalfenisite: Tl6(Fe,Ni,Cu)25S26Cl

Comments: Polished 2mm fragment of thalfenisite in epoxy mount..
Location: Oktyabr'sky mine, Noril'sk, Siberia, Russia. Scale: 1.2cm across.
© Tom Loomis / Dakota Matrix