Mineral Specimen Images (T)

Trechmannite: AgAsS2

Comments: Colorfull assemblege of techmannite (reddish black) with orpiment (golden yellow) and realgar (reddish orange) in white dolomite.
Location: Lengenbach quarry, Binntal, Wallis, Switzerland. Scale: Picture size 3 mm.
© Tom Loomis / Dakota Matrix

Trembathite: (Mg,Fe++)3B7O13Cl

Comments: Blue-green pseudocubic trembathite crystal.
Location: Salt Springs deposit (Salt Springs evaporite deposit), Sussex, Kings Co., New Brunswick, Canada. Scale: See Image.
© Rruff Database

Tremolite: [ ]Ca2Mg5Si8O22(OH)2

Comments: Dark green tremolite crystal cluster.
Location: Selleck Road Locality, West Pierrepont, St Lawrence Co., New York, USA. Scale: 4.5x2x1.5 cm.
© John Betts - Fine Minerals

Tremolite: [ ]Ca2Mg5Si8O22(OH)2  
Magnesiocoulsonite: MgV+++2O4

Comments: Black grains of magnesiocoulsonite with green chromian tremolite. Metallic bronze grain of thiospinelid of kalininite-florensovite series is visible in the upper right corner of the image.
Location: Pereval Marble Quarry, Slyudyanka (Sludyanka), Lake Baikal area, Irkutskaya Oblast', Prebaikalia (Pribaikal'e), Eastern-Siberian Region, Russia. Scale: FOV is 3x2 mm.
© Pavel M. Kartashov

Trevorite: NiFe+++2O4  
Willemseite: (Ni,Mg)3Si4O10(OH)2

Comments: Small trevorite crystal in massive willemseite.
Location: Bon Accord, Barberton Mountain, Mpumalanga, South Africa. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Trevorite: NiFe+++2O4  
Willemseite: (Ni,Mg)3Si4O10(OH)2

Comments: Waxy translucent green willemseite with black trevorite in schistose rock.
Location: Near Scotia Talc Mine, Barberton Mountain, Transvaal, Mpumalanga, South Africa. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Triangulite: Al3(UO2)4(PO4)4(OH)5·5(H2O)

Comments: Bright yellow triangulite filling vugs in rhyolite.
Location: Rhyolite Ridge, near Mina, Mineral County, Nevada, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tridymite: SiO2

Comments: Clear, pseudohexagonal crystals of tridymite on matrix.
Location: Bellerberg quarry, Laacher See, Rhineland-Palatinate, Germany. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Trilithionite: KLi1.5Al1.5AlSi3O10F2

Comments: Pinkish trilithionite in matrix.
Location: Neuland Quarry, Döbschütz, Königshain, Oberlausitz, Saxony, Germany. Scale: Picture size 1.2 mm.
© Thomas Witzke / Abraxas-Verlag

Trimerite: CaMn2Be3(SiO4)3

Comments: Pinkish crystalline trimerite in ore.
Location: Langban, Varmland, Sweden. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Trinitite:  
Lechatelierite: SiO2

Comments: Fused silica sand (trinitite) generated by the first nuclear (fission) bomb. Although man-made and not a valid mineral, the specimen has historic value.
Location: Trinity Flats, White Sands, New Mexico. It came into existance at 5:29 a.m., July 16, 1945. Scale: Specimen size 4.1 cm.
© Paul M. Schumacher

Triphylite: LiFe++PO4

Comments: Dark gray-blue prismatic triphylite crystals in pegmatite rock.
Location: Newry, Oxford County, Maine, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Triplite: (Mn,Fe++,Mg,Ca)2(PO4)(F,OH)

Comments: Dark brown vitreous triplite.
Location: Abravazes Pegmatite, Beira Alta, Viseu, Portugal. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Triploidite: (Mn,Fe++)2(PO4)(OH)  
Lithiophilite: LiMnPO4

Comments: Salmon-colored prismatic crystalline triploidite with brown lithiophilite.
Location: Capoeira Mine, near Parelhas, Rio Grande do Norte, Brazil. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Trippkeite: CuAs+++2O4

Comments: Tiny bluegreen crystals of trippkeite, maximum size about 1 mm in volcanic rock. Type specimen for trippkeite.
Location: Copiapo, Atacama, Chile. Scale: Specimen Size 14x6 mm.
© German Type Specimen Catalogue

Tripuhyite: Fe++Sb+++++O4

Comments: Brown tripuhyite on matrix.
Location: Clara Mine, Rankach valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Tripuhyite: Fe++Sb+++++O4  
Squawcreekite: (Fe+++,Sb+++++,W++++++)O4·(H2O)

Comments: Micro red-orange squawcreekite crystals in matrix. The mineral is now considered to be a Zn-bearing variety of Tripuhyite.
Location: Squaw Creek Tin Mine, Catron County, New Mexico. Scale: Not Given.
© Diederik Visser

Tristramite: (Ca,U++++,Fe+++)(PO4,SO4)·2(H2O)

Comments: Reflected light, crossed polars showing a cavity with tristramite (white) infill and surrounded by intergrowth of marcasite (dark) and pitchblende (dark). (MinMag, v47:344).
Location: Wheal Trewavas Head dumps, Cornwall, UK. Scale: Scale bar = 0.1 mm.
© Mineralogical Magazine

Tritomite-(Ce): (Ce,La,Ca,Y,Th)5(Si,B)3(O,OH,F)13

Comments: Dark brown, vitreous grains of tritomite-(Ce) in pegmatite matrix.
Location: Langesundsfjorden, Larvik, Vestfold, Norway. Scale: Crystal size 1 cm.
© Tom Loomis / Dakota Matrix

Tritomite-(Y): (Y,Ca,La,Fe++)5(Si,B,Al)3(O,OH,F)13 (?)

Comments: Massive, resinous spencite (Tritomite-(Y)), with brown zircon crystals..
Location: BEMCO prospect (Charlotte Mine), Cranberry Lake, Byram Township, Sussex Co., New Jersey, USA. Scale: Sample Size 2.0 cm.
© Jeff Weissman / Photographic Guide to Mineral Species