Alphabetical Listing

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T Index of Mineral Species

This alphabetical listing of T minerals include synonyms of accepted mineral names, pronunciation of that name, name origins, and locality information. Visit our expanded selection of mineral pictures.

LEGEND

Sound files Minerals identified with this icon have a sound file, courtesy of The Photo-Atlas of Minerals, which gives the pronunciation of the mineral name.
Image files Minerals identified with this icon have an image or picture in the database which may be viewed.
Java Crystal Forms Minerals identified with this icon have a Java crystal form, created with the program JCrystal, which can be manipulated and rotated.
Mindat Locations This icon links the mineral to the locality-rich information contained in Mindat.org.
Minerals identified with this icon are radioactive. - Detectable with very sensitive instruments, - very mild, - weak, - strong, - very strong, - dangerous.
* Mineral Name is Not IMA Approved.
! New Dana Classification Number Has Been Changed or Added.
? IMA Discredited Mineral Species Name.
Taaffeite *  (see Magnesiotaaffeite-2N2S ) See Also: GOOGLE, Athena, MinDAT, MinMax
Tacharanite  Say TACHARANITE Mineral Image for Tacharanite Mindat locations   Ca12Al2Si18O33(OH)36 NAME ORIGIN: Named from the Gaelic "tacharan," a changeling, because on standing in air the mineral breaks down to form other compounds (not noticed by later investigators).
Tachyhydrite  Say TACHYHYDRITE Mineral Image for Tachyhydrite Mindat locations   CaMg2Cl6·12(H2O) NAME ORIGIN: From the Greek for "quick water", in allusion to its ready deliquescence.
Tadzhikite *  (see Tadzhikite-(Ce) ) See Also: GOOGLE, Athena, MinDAT, MinMax
Tadzhikite-(Ce)  Say TADZHIKITE-(CE) Mindat locations   Ca4(Ce,Y)2(Ti,Al,Fe+++,[ ])2[Si4B4O22](OH)2 NAME ORIGIN: Named for the locality and its cerium content. LOCALITY: In the Dara-i-Pioz massif, Alai Range, Tien Shan, Tajikistan (Tadzhikistan).
Tadzhikite-(Y) !  Say TADZHIKITE-(Y) Mindat locations   Ca4(Y,Ce)2(Ti,Al,Fe+++,[ ])2[Si4B4O22](OH)2 NAME ORIGIN: Named for the locality and its yttrium content. LOCALITY: In the Dara-i-Pioz massif, Alai Range, Tien Shan, Tajikistan (Tadzhikistan).
Taeniolite *  (see Tainiolite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Taenite  Say TAENITE Mineral Image for Taenite Mindat locations   gamma-(Fe,Ni) NAME ORIGIN: Named from the Greek for "band" in allusion to the flattened form.
Taikanite  Say TAIKANITE Mindat locations   (Ba,Sr)2Mn+++2Si4O12
Taimyrite  Say TAIMYRITE Mineral Image for Taimyrite Mindat locations   (Pd,Cu,Pt)3Sn NAME ORIGIN: Named for the locality. LOCALITY: Talnakh, Tiamyr Peninsula, Norilsk, Russia.
Tainiolite  Say TAINIOLITE Mineral Image for Tainiolite Mindat locations   KLiMg2Si4O10F2 NAME ORIGIN: Named from the Greek for "band" or "strip", inallusion to hte tabular habit of the crystals.
Takanelite  Say TAKANELITE Mindat locations   (Mn++,Ca)Mn++++4O8·(H2O) NAME ORIGIN: Named for Katsutoshi Takane (1899-1945), professor of mineralogy, Tohoku University, Sendai, Japan.
Takedaite  Say TAKEDAITE Mineral Image for Takedaite Mindat locations   Ca3(BO3)2 NAME ORIGIN: For Prof. Hiroshi Takeda (1934- ) , of the Mineralogial Institute, University of Tokyo.
Takeuchiite  Say TAKEUCHIITE Mineral Image for Takeuchiite Mindat locations   Mg2Mn+++O2(BO3) NAME ORIGIN: Named for Yoshio Takeuchi (1924-), Japanese mineralogist
Takovite  Say TAKOVITE Mineral Image for Takovite Mindat locations   Ni6Al2(OH)16(CO3,OH)·4(H2O) NAME ORIGIN: Named for the locality. LOCALITY: Takovo, Serbia.
Talc  Say TALC Mineral Image for Talc Mindat locations   Mg3Si4O10(OH)2 NAME ORIGIN: From the Arabic.
Talmessite  Say TALMESSITE Mineral Image for Talmessite Mindat locations   Ca2Mg(AsO4)2·2(H2O)
Talnakhite  Say TALNAKHITE Mineral Image for Talnakhite Mindat locations   Cu9(Fe,Ni)8S16 NAME ORIGIN: Named for the locality. LOCALITY: Talnakh area, Taimyr Peninsula, Noril'sk region, Yakutiya, western Siberia, Russia
Tamaite !   Mindat locations   (Ca,K,Ba,Na)3-4Mn24(Si,Al)40(O,OH)112·21(H2O) NAME ORIGIN: Named for the locality. LOCALITY: Shiromaru mine, Okutama, Tama district, about 60 km from Tokyo, Japan.
Tamarugite  Say TAMARUGITE Mineral Image for Tamarugite Java Crystal form for Tamarugite Mindat locations   NaAl(SO4)2·6(H2O) NAME ORIGIN: Named for the locality. LOCALITY: Tamarugal Pampa, Cerro Pintado, Tarapaca, Chile
Tancoite  Say TANCOITE Mindat locations   HNa2LiAl(PO4)2(OH) NAME ORIGIN: Named for the locality. LOCALITY: Tanco spodumene-bearing pegmatite mine at Bernic Lake, MB, Canada.
Taneyamalite  Say TANEYAMALITE Mineral Image for Taneyamalite Mindat locations   (Na,Ca)(Mn++,Mg)12[(Si,Al)6O17]2(O,OH)10 NAME ORIGIN: Named for the locality. LOCALITY: Taneyama mine, Kumamoto Prefecture and Iwaizama mine, Saitama Prefecture, Honshu, Japan.
Tangeite  Say TANGEITE Mineral Image for Tangeite Mindat locations   CaCu(VO4)(OH) NAME ORIGIN: Named for the locality. LOCALITY: Tange Gorge, Fergana Valley, Kyrgystan.
Tantalaeschynite-(Y)  Say TANTALAESCHYNITE-(Y) Mindat locations   (Y,Ce,Ca)(Ta,Ti,Nb)2O6 NAME ORIGIN: Named for its composition and from the Greek for "shame," in allusion to the inability of chemists, at the time of its discovery, to separate some of its constituents.
Tantalcarbide !   Mineral Image for Tantalcarbide Mindat locations   TaC NAME ORIGIN: The name reflects its composition: tantalum and carbon.
Tantalite *  (see Ferrotantalite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Tantalite *  (see Manganotantalite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Tantalowodginite *   Mindat locations   (Mn2,[ ])4Ta4Ta8O32 NAME ORIGIN: Named for the composition.
Tantalum *   Mindat locations   Ta NAME ORIGIN: Greek, Tantalos = father of Niobe.
Tanteuxenite-(Y)  Say TANTEUXENITE-(Y) Java Crystal form for Tanteuxenite-(Y) Mindat locations   (Y,Ce,Ca)(Ta,Nb,Ti)2(O,OH)6 NAME ORIGIN: Named for the composition (Tantalum) and the Greek for "friendly to strangers, hospitable," in allusion to the rare elements that it contains.
Tantite  Say TANTITE Mindat locations   Ta2O5 NAME ORIGIN: Named for its composition (Tantalum).
Tanzanite - blue *  (see Zoisite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Tapiolite *  Say TAPIOLITE Mindat locations   (Fe,Mn)(Ta,Nb)2O6 NAME ORIGIN: Named in 1863 after the god Tapio of Finnish mythology. Now a group name.
Tapiolite *  (see Ferrotapiolite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Taramellite  Say TARAMELLITE Mineral Image for Taramellite Mindat locations   Ba4(Fe+++,Ti,Fe++,Mg)4(B2Si8O27)O2Clx (x=0 to 1) NAME ORIGIN: Named for Torquato Taramelli (1845-1922), Italian geologist.
Taramite  Say TARAMITE Mineral Image for Taramite Mindat locations   Na(CaNa)Fe++3AlFe+++[Si6Al2O22](OH)2 NAME ORIGIN: Named after the locality. LOCALITY: Wali-tarama, Mariupol, Ukraine.
Taranakite  Say TARANAKITE Mineral Image for Taranakite Mindat locations   K3Al5(HPO4)6(PO4)2·18(H2O)
Tarapacaite  Say TARAPACAITE Mineral Image for Tarapacaite Mindat locations   K2CrO4
Tarasovite *  (see Rectorite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Tarbuttite  Say TARBUTTITE Mineral Image for Tarbuttite Java Crystal form for Tarbuttite Mindat locations   Zn2(PO4)(OH) NAME ORIGIN: Named for Percy Coventry Tarbutt, director of the Broken Hill Explaration Co., Zambia.
Tarkianite !   Mineral Image for Tarkianite Mindat locations   (Cu,Fe)(Re,Mo)4S8 NAME ORIGIN: Named for Professor Mahmud Tarkian (1941-), of the University of Hamburg, Germany, for his contributions to ore mineralogy.
Tarnowitzite (Pb) *  (see Aragonite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Taseqite !   Mindat locations   Na12Sr3Ca6Fe3Zr3NbSi25O73(O,OH,H2O)3Cl2 NAME ORIGIN: Named for the northern part of the complex, at theTaseq slope.
Tatarskite  Say TATARSKITE Mindat locations   Ca6Mg2(SO4)2(CO3)2Cl4(OH)4·7(H2O) NAME ORIGIN: Named for Vitalii Borisovich Tatarskii (1907-), Russian mineralogist, Leningrad University.
Tatyanaite !   Mineral Image for Tatyanaite Mindat locations   (Pt,Pd,Cu)9Cu3Sn4 NAME ORIGIN: Named for the Russian mineralogist Tatyana L. Evstigneeva (or Yestigneeva) (1945-).
Tausonite  Say TAUSONITE Mineral Image for Tausonite Mindat locations   SrTiO3 NAME ORIGIN: Named for L. V. Tauson (1917-1989), Russian geochemist.
Tavorite  Say TAVORITE Mineral Image for Tavorite Mindat locations   LiFe+++(PO4)(OH) NAME ORIGIN: Named for Elysairio Tavora (1911-), mineralogist, University of Brazil, Rio de Janerio, Brazil.
Taylorite *  (see Arcanite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Tazheranite  Say TAZHERANITE Mineral Image for Tazheranite Mindat locations   CaTiZr2O8 NAME ORIGIN: Named for the locality. LOCALITY: Tazheran alkalic massif., W of Lake Baikal, Siberia, Russia.
Teallite  Say TEALLITE Mineral Image for Teallite Java Crystal form for Teallite Mindat locations   PbSnS2 NAME ORIGIN: Named for Jethro Justinian Harris Teall (1849-1924), Director of the Geological Survey of Great Britain and Ireland.
Tedhadleyite !   Mindat locations   Hg++Hg+10O4I2(Cl1.16Br0.84)2 NAME ORIGIN: Named for Ted A. Hadley (1961-) of Sunnyvale, California, who participated in the collection of the holotype specimen.
Teepleite  Say TEEPLEITE Mineral Image for Teepleite Java Crystal form for Teepleite Mindat locations   Na2B(OH)4Cl
Tegengrenite !   Mineral Image for Tegengrenite Java Crystal form for Tegengrenite Mindat locations   (Mg,Mn++)2Sb+++++0.5(Mn+++,Si,Ti)0.5O4 NAME ORIGIN: Named for Felix Tegengren (1884-1980), a renowned Finlandic-Swedish economic geologist who wrote about the ore deposits of Sweden and China.
Teineite  Say TEINEITE Java Crystal form for Teineite Mindat locations   CuTeO3·2(H2O)
Telargpalite  Say TELARGPALITE Mineral Image for Telargpalite Mindat locations   (Pd,Ag)3Te NAME ORIGIN: Named for the composition (Tel, Ag, Pd).
Tellurantimony  Say TELLURANTIMONY Mineral Image for Tellurantimony Mindat locations   Sb2Te3 NAME ORIGIN: Named for the composition.
Telluric Silver *  (see Hessite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Tellurite  Say TELLURITE Mineral Image for Tellurite Java Crystal form for Tellurite Mindat locations   TeO2 NAME ORIGIN: Named after its containing tellurium (Latin, tellus = "earth").
Tellurium  Say TELLURIUM Mineral Image for Tellurium Java Crystal form for Tellurium Mindat locations   Te NAME ORIGIN: Named after the element, Latin, tellus = "earth."
Tellurobismuthite  Say TELLUROBISMUTHITE Mineral Image for Tellurobismuthite Mindat locations   Bi2Te3 NAME ORIGIN: Named after its composition of tellurium and bismuth.
Tellurohauchecornite  Say TELLUROHAUCHECORNITE Mindat locations   Ni9BiTeS8 NAME ORIGIN: Named for its chemical relationship to hauchecornite.
Telluronevskite !   Mindat locations   Bi3TeSe2 NAME ORIGIN: Named as the Te analog of nevskite.
Telluropalladinite  Say TELLUROPALLADINITE Mindat locations   Pd9Te4 NAME ORIGIN: Named for the composition.
Telyushenkoite !   Mindat locations   CsNa6[Be2(Si,Al)18O39F2] NAME ORIGIN: After Tamara Matveyevna Telyushenko (1930–1997), a petrographer who made major contributions to knowledge of the geology of Central Asia and who headed the Young Geologists’ School of Ash
Temagamite  Say TEMAGAMITE Mineral Image for Temagamite Mindat locations   Pd3HgTe3 NAME ORIGIN: Named for the locality. LOCALITY: Temagami Cu deposit, Temagami, Island, Ontario, Canada.
Temiskamite *  (see Maucherite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Tengchongite  Say TENGCHONGITE Mindat locations   CaU++++++6Mo++++++2O25·12(H2O)
Tengerite-(Y)  Say TENGERITE-(Y) Mindat locations   Y2(CO3)3·2-3(H2O) NAME ORIGIN: Named for C. Tenger, Swedish geologist.
Tennantite  Say TENNANTITE Mineral Image for Tennantite Java Crystal form for Tennantite Mindat locations   (Cu,Fe)12As4S13 NAME ORIGIN: Named after the English chemist, Smithson Tennant (1761-1815).
Tenorite  Say TENORITE Mineral Image for Tenorite Mindat locations   CuO NAME ORIGIN: Named after the Italian botanist, M. Tenor (1781-1861).
Tephroite  Say TEPHROITE Mineral Image for Tephroite Mindat locations   Mn2SiO4 NAME ORIGIN: From the Greek tephros - "ash gray" for its color.
Terlinguacreekite !  Say TERLINGUACREEKITE Mindat locations   Hg++3O2Cl2 NAME ORIGIN: Named for the locality. LOCALITY: Perry Pit, Mariposa mine, Terlingua mining district, Brewster County, Texas, USA
Terlinguaite  Say TERLINGUAITE Mineral Image for Terlinguaite Java Crystal form for Terlinguaite Mindat locations   Hg+Hg++ClO NAME ORIGIN: Named after its locality. LOCALITY: Terlingua, Brewster Co., Texas, USA.
Ternesite !  Say TERNESITE Mineral Image for Ternesite Mindat locations   Ca5(SiO4)2SO4 NAME ORIGIN: For Mr. B. Ternes of Mayen, Germany, who found the mineral and provided specimens for the study.
Ternovite !  Say TERNOVITE Mindat locations   (Mg,Ca)Nb4O11-n(H2O) where n ~ 10 NAME ORIGIN: Named after Vladimir Ivanovich Ternovoi (1928–1980), economic geologist, a pioneer in studies of the Kovdor phlogopite depost.
Terranovaite !  Say TERRANOVAITE Java Crystal form for Terranovaite Mindat locations   (Na,Ca)8(Si68Al12)O160-29(H2O) NAME ORIGIN: For the Italian Antarctic Station at Terranova Bay, Antarctica.
Terskite  Say TERSKITE Mineral Image for Terskite Mindat locations   Na4Zr(H4Si6O18)
Tertschite  Say TERTSCHITE Mineral Image for Tertschite Mindat locations   Ca4B10O19·20(H2O) NAME ORIGIN: Named for Herman Tertsch (1880-1962), Austrian mineralogist.
Teruggite  Say TERUGGITE Mineral Image for Teruggite Mindat locations   Ca4MgAs2B12O22(OH)12·12(H2O)
Teschemacherite  Say TESCHEMACHERITE Mindat locations   (NH4)HCO3
Testibiopalladite  Say TESTIBIOPALLADITE Mindat locations   PdTe(Sb,Te) NAME ORIGIN: Named for the composition, TEllurium, STIBnium (Latin for Antimony), BIsmuth, and PALLADIum.
Tetra-auricupride   Mineral Image for Tetra-auricupride Mindat locations   AuCu NAME ORIGIN: Named after its crystal symmetry and Au, Cu content.
Tetra-ferri-annite   Java Crystal form for Tetra-ferri-annite Mindat locations   K(Fe++,Mg)3(Fe+++,Al)Si3O10(OH)2 NAME ORIGIN: Named in 1963 for the composition and relationship to annite. Renamed to Tetra-ferri-annite.
Tetra-ferriphlogopite !   Mindat locations   KMg3Fe+++Si3O10(OH)2
Tetradymite  Say TETRADYMITE Mineral Image for Tetradymite Java Crystal form for Tetradymite Mindat locations   Bi2Te2S NAME ORIGIN: From the Greek, tetradymos, "fourfold."
Tetraferroplatinum   Mindat locations   PtFe NAME ORIGIN: Named for the composition (Fe, Pt) and crystal system.
Tetrahedrite  Say TETRAHEDRITE Mineral Image for Tetrahedrite Java Crystal form for Tetrahedrite Mindat locations   (Cu,Fe)12Sb4S13 NAME ORIGIN: Name is derived from its crystal form.
Tetranatrolite ?  Say TETRANATROLITE Mineral Image for Tetranatrolite Mindat locations   Na2[Al2Si3O10]·2(H2O) NAME ORIGIN: The name given in 1980 recognizes its association with and similarity in chemical composition to natrolite.
Tetranatrolite *  (see Gonnardite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Tetrarooseveltite  Say TETRAROOSEVELTITE Mineral Image for Tetrarooseveltite Mindat locations   BiAsO4 NAME ORIGIN: Named as the tetragonal analog of rooseveltite.
Tetrataenite  Say TETRATAENITE Mindat locations   FeNi NAME ORIGIN: Named for taenite and the tetragonal crystal form of this polymorph.
Tetrawickmanite  Say TETRAWICKMANITE Mineral Image for Tetrawickmanite Mindat locations   Mn++Sn++++(OH)6 NAME ORIGIN: Named as the tetragonal analog of wickmanite.
Texasite *  (see Zaratite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Thadeuite  Say THADEUITE Mindat locations   (Ca,Mn++)(Mg,Fe++,Mn+++)3(PO4)2(OH,F)2 NAME ORIGIN: Namd for Decio Thadeu, Technical University, Lisbon, Portugal, for his studies on Portuguese ore deposits.
Thalcusite  Say THALCUSITE Mindat locations   TlCu3FeS4 NAME ORIGIN: Named for the composition, THALlium, CUprum (Copper), and Sulfur.
Thalenite-(Y)  Say THALENITE-(Y) Mineral Image for Thalenite-(Y) Mindat locations   Y3Si3O10(OH) NAME ORIGIN: Named for Tobins Robert Thalen (1827-1905), Swedish physicist.
Thalfenisite  Say THALFENISITE Mineral Image for Thalfenisite Mindat locations   Tl6(Fe,Ni,Cu)25S26Cl NAME ORIGIN: Named for the composition (Tl, Fe, Ni, S).
Thaumasite  Say THAUMASITE Mineral Image for Thaumasite Mindat locations   Ca3Si(CO3)(SO4)(OH)6·12(H2O) NAME ORIGIN: From the Greek thaumasion - "surprising" in allusion to the chemical composition.
Theisite  Say THEISITE Mineral Image for Theisite Mindat locations   Cu5Zn5[(As+++++,Sb+++++)O4]2(OH)14 NAME ORIGIN: Named for Nicholas J. Theis, Geologist, Bendix Corp., who discovered the orignal sample.
Thenardite  Say THENARDITE Mineral Image for Thenardite Java Crystal form for Thenardite Mindat locations   Na2SO4 NAME ORIGIN: Named after the French chemist, Louis Jacques Thenard (1777-1826).
Theoparacelsite !   Mindat locations   Cu3(OH)2(As2O7) NAME ORIGIN: Named for the Swiss scientist Paracelse (1493-1541), who was Philippus Theophrastus van Hohenheim. Paracelse is a Greek-Roman translation of Hohenheim.
Theophrastite  Say THEOPHRASTITE Mineral Image for Theophrastite Mindat locations   Ni(OH)2
Theresemagnanite  Say THERESEMAGNANITE Mindat locations   (Co,Zn,Ni)6(SO4)(OH,Cl)10·8(H2O) NAME ORIGIN: Named for Therese Magnan for her contributions to knowledge about the Cap Garrone mine.
Thermonatrite  Say THERMONATRITE Mineral Image for Thermonatrite Mindat locations   Na2CO3·(H2O)
Thinolite (calcite pseudomorphs) *  (see Ikaite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Thomasclarkite-(Y) !  Say THOMASCLARKITE-(Y) Mineral Image for Thomasclarkite-(Y) Mindat locations   (Na,Ce)(Y,REE)(HCO3)(OH)3·4(H2O) NAME ORIGIN: Named after Thomas Henry Clark (1893-1996), McGill University, Montreal, Quebec, Canada, noted for his studies of the geology of the St. Lawrence Lowlands.
Thometzekite  Say THOMETZEKITE Mineral Image for Thometzekite Mindat locations   Pb(Cu,Zn)2(AsO4)2·2(H2O)
Thomsenolite  Say THOMSENOLITE Mineral Image for Thomsenolite Mindat locations   NaCaAlF6·(H2O) NAME ORIGIN: Named for Hans Peter Jorgen Julius Thomsen (1826-1909), Daniosh physical chemist and founder of the Greenland cryolite industry.
Thomsonite *  (see Thomsonite-Ca ) See Also: GOOGLE, Athena, MinDAT, MinMax
Thomsonite-Ca  Say THOMSONITE-CA Mineral Image for Thomsonite-Ca Mindat locations   NaCa2Al5Si5O20·6(H2O) NAME ORIGIN: Named after the Scottish chemist, T. Thomson (1773-1852).
Thomsonite-Sr !  Say THOMSONITE-SR Java Crystal form for Thomsonite-Sr Mindat locations   (Sr,Ca)2Na[Al5Si5O20]·7(H2O) NAME ORIGIN: Named as the Sr dominant analog of thomsonite-Ca.
Thorbastnaesite *  (see Thorbastnasite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Thorbastnasite  Say THORBASTNASITE Mindat locations   Th(Ca,Ce)(CO3)2F2·3(H2O)
Thoreaulite  Say THOREAULITE Mineral Image for Thoreaulite Mindat locations   Sn++Ta2O6 NAME ORIGIN: Named for Jacques Thoreau (188-1971), University of Louvain, Belogium.
Thorianite  Say THORIANITE Mineral Image for Thorianite Java Crystal form for Thorianite Mindat locations   ThO2 NAME ORIGIN: Named for its chemical composition containing thorium.
Thorikosite  Say THORIKOSITE Mineral Image for Thorikosite Mindat locations   Pb3(Sb+++,As+++)O3(OH)Cl2 NAME ORIGIN: Named for the locality. LOCALITY: Thorikos, near the Laurium mines.
Thorite  Say THORITE Mineral Image for Thorite Mindat locations   ThSiO4 NAME ORIGIN: From the presence of the element Thorium, a highly radioactive material.
Thornasite  Say THORNASITE Mineral Image for Thornasite Mindat locations   Na12Th3[Si8O19]4·18(H2O) NAME ORIGIN: Named for its composition (Thorium, Na, Si).
Thorogummite  Say THOROGUMMITE Mineral Image for Thorogummite Mindat locations   Th(SiO4)1-x(OH)4x NAME ORIGIN: Named after gummite and the element thorium.
Thorosteenstrupine  Say THOROSTEENSTRUPINE Mindat locations   (Ca,Th,Mn)3Si4O11F·6(H2O) NAME ORIGIN: Named for steenstrupine and the thorium content.
Thortveitite  Say THORTVEITITE Mineral Image for Thortveitite Mindat locations   (Sc,Y)2Si2O7 NAME ORIGIN: Named after the Norwegian engineer, O. Thortveit.
Thorutite  Say THORUTITE Mindat locations   (Th,U,Ca)Ti2(O,OH)6 NAME ORIGIN: Named for the composition (Thorium, rutile).
Threadgoldite  Say THREADGOLDITE Mineral Image for Threadgoldite Mindat locations   Al(UO2)2(PO4)2(OH)·8(H2O) NAME ORIGIN: Named for Ian M. Threadgold (1929-), University of Sydney, NSW, Australia.
Thulite - red *  (see Zoisite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Thuringite (Fe) *  (see Chamosite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Tiemannite  Say TIEMANNITE Mineral Image for Tiemannite Mindat locations   HgSe NAME ORIGIN: Named after its discoverer, C. W. F. Tiemann (1848-1899).
Tienshanite  Say TIENSHANITE Mineral Image for Tienshanite Mindat locations   BaNa2MnTiB2Si6O20 NAME ORIGIN: Named for the locality. LOCALITY: Dara-i-pioz massif, Tien Shan, southern Tajikistan.
Tiettaite  Say TIETTAITE Mindat locations   (Na,K)17Fe+++TiSi16O29(OH)30·2(H2O) NAME ORIGIN: Named from the Finnish "tietta", science or knowledge, for the first science station in Khibiny.
Tiger Eye - pseudomorph of asbestos *  (see Quartz ) See Also: GOOGLE, Athena, MinDAT, MinMax
Tikhonenkovite  Say TIKHONENKOVITE Mineral Image for Tikhonenkovite Mindat locations   SrAl(OH)F4·(H2O) NAME ORIGIN: Named for Igor Tikhonenkov (1927-1961), Russian student of alkaline rocks and minerals.
Tilasite  Say TILASITE Mineral Image for Tilasite Java Crystal form for Tilasite Mindat locations   CaMg(AsO4)F NAME ORIGIN: Named for Daniel Tilas (1712-1772), Swedish mining engineer.
Tilkerodite *  (see Clausthalite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Tilleyite  Say TILLEYITE Mineral Image for Tilleyite Mindat locations   Ca5Si2O7(CO3)2
Tillmannsite !   Mindat locations   (Ag3Hg)(V,As)O4 NAME ORIGIN: Named for Ekkhart Tillmanns (1941-) of the Institute of Mineralogy and Crystallography, Wien, Austria.
Tin  Say TIN Mineral Image for Tin Mindat locations   Sn NAME ORIGIN: A word of Old English origin, related to the Dutch tin and the German zinn.
Tin Ore *  (see Cassiterite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Tin pyrites *  (see Stannite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Tinaksite  Say TINAKSITE Mineral Image for Tinaksite Mindat locations   K2Na(Ca,Mn++)2(Ti,Fe)O[Si7O18(OH)] NAME ORIGIN: Named fro the symbols of some of its component elements (Ti, Na, K).
Tincal *  (see Borax ) See Also: GOOGLE, Athena, MinDAT, MinMax
Tincalconite  Say TINCALCONITE Mineral Image for Tincalconite Mindat locations   Na6[B4O5(OH)4]3·8(H2O) NAME ORIGIN: Named for tincal (borax) and konos "powder" in allusion to the minerals composition and appearance.
Tinnunculite *   Mindat locations   C10H12N6O8 (?)
Tinsleyite  Say TINSLEYITE Mineral Image for Tinsleyite Mindat locations   KAl2(PO4)2(OH)·2(H2O) NAME ORIGIN: Named for Frank C. Tinsley (1916-), mineral collector, Black Hills specialist of Rapid City, South Dakota, USA.
Tinticite  Say TINTICITE Mineral Image for Tinticite Mindat locations   Fe+++5(PO4,VO4)4·7(H2O) NAME ORIGIN: Named for the locality. LOCALITY: Tintic Standard mine, Tintic district, Utah
Tintinaite  Say TINTINAITE Mindat locations   Pb22Cu+4(Sb,Bi)30S69 NAME ORIGIN: Named after the locality. LOCALITY: Tintina silver mines, Yukon Territory, Canada.
Tinzenite  Say TINZENITE Mineral Image for Tinzenite Java Crystal form for Tinzenite Mindat locations   (Ca,Mn,Fe)3Al2BO3Si4O12(OH) NAME ORIGIN: Named after its locality. LOCALITY: Tinzen, Val d'Err, Grisons, Switzerland
Tiptopite  Say TIPTOPITE Mineral Image for Tiptopite Mindat locations   K2(Na,Ca)2Li3Be6(PO4)6(OH)2·(H2O) NAME ORIGIN: Named for the locality. LOCALITY: Tip Top mine, Custer, Custer County, South Dakota, USA
Tiragalloite  Say TIRAGALLOITE Mineral Image for Tiragalloite Mindat locations   Mn++4As+++++Si3O12(OH) NAME ORIGIN: Named for Paolo Tiragallo (1905-).
Tirodite - Renamed *  (see Manganocummingtonite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Tirolit *  (see Tyrolite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Tischendorfite !   Mindat locations   Pd8Hg3Se9 NAME ORIGIN: Name for Gerhard Tischendorf (1927-) who first recognized the mineral in the deposit in 1958.
Tisinalite  Say TISINALITE Mineral Image for Tisinalite Mindat locations   Na3H3(Mn++,Ca,Fe)TiSi6(O,OH)18·2(H2O) NAME ORIGIN: For the chemical elements Ti, Si, and Na in the formula.
Titanclinohumite *  (see Clinohumite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Titanic Iron Ore *  (see Ilmenite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Titanite  Say TITANITE Mineral Image for Titanite Java Crystal form for Titanite Mindat locations   CaTiSiO5 NAME ORIGIN: Named after its chemical composition of titanium.
Titanium *   Mindat locations   Ti NAME ORIGIN: Named after the element which is named after the Titans, sons of the Earth goddess.
Titanoelpidite *  (see Labuntsovite-Mn ) See Also: GOOGLE, Athena, MinDAT, MinMax
Titanoferrite *  (see Ilmenite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Titanowodginite  Say TITANOWODGINITE Mineral Image for Titanowodginite Mindat locations   (Mn++,Fe++)(Ti,Sn)(Ta,Nb)2O8 NAME ORIGIN: Named for TITANium and its relationship to wodginite.
Titantaramellite  Say TITANTARAMELLITE Mineral Image for Titantaramellite Mindat locations   Ba4(Ti,Fe+++,Fe++,Mg)4(B2Si8O27)O2Clx X=0 TO 1, with Ti > Fe NAME ORIGIN: Named for taramellite and dominance of Ti as the octahedral cation.
Tivanite  Say TIVANITE Mindat locations   V+++TiO3(OH) NAME ORIGIN: Named for the TItanium and VANadium in the composition.
Tlalocite  Say TLALOCITE Mineral Image for Tlalocite Mindat locations   Cu10Zn6(Te++++O3)(Te++++++O4)2Cl(OH)25·27(H2O) NAME ORIGIN: Named for Tlaloc, the god of rain in the Toltec and Aztec civilizations, in allusion to its high water content.
Tlapallite  Say TLAPALLITE Mineral Image for Tlapallite Mindat locations   H6(Ca,Pb)2Cu3(SO4)(Te++++O3)4(Te++++++O6) NAME ORIGIN: Named from the Nahua "tlapalli," paint, in allusion to its paintlike coating of rock surfaces.
Tobelite  Say TOBELITE Mineral Image for Tobelite Mindat locations   (NH4,K)Al2(Si3Al)O10(OH)2 NAME ORIGIN: Named for the locality. LOCALITY: Ohgidani pottery stone deposit, Tobe, Ehime Prefecture, adn in the Horo pryophyllite deposit, Toyosaka, hiroshima Prefecture, Japan.
Tobermorite  Say TOBERMORITE Mineral Image for Tobermorite Mindat locations   Ca5Si6O16(OH)2·4(H2O) NAME ORIGIN: Named for the locality. LOCALITY: In Scotland, on the Isle of Mull, around Tobermory.
Tochilinite  Say TOCHILINITE Mineral Image for Tochilinite Mindat locations   6Fe0.9S·5(Mg,Fe++)(OH)2 NAME ORIGIN: Named for Mitrofan S.Tochilin (1910-1968), Russian scientist.
Tocornalite  Say TOCORNALITE Mindat locations   (Ag,Hg)I (?) NAME ORIGIN: Named in 1867 for S. F. Tocornal, rector of the University of Santiago, Chile.
Toddite *  (see Magnesiocolumbite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Todorokite  Say TODOROKITE Mineral Image for Todorokite Mindat locations   (Na,Ca,K)2(Mn++++,Mn+++)6O12·3-4.5(H2O) NAME ORIGIN: Named for the locality. LOCALITY: Todroki mine, Hikkaido, Japan.
Tokkoite  Say TOKKOITE Mineral Image for Tokkoite Mindat locations   K2Ca4[Si7O18(OH)](F,OH) NAME ORIGIN: Named for the locality. LOCALITY: Murun massif, between the Charo and Tokko rivers, Yakutia, Russia.
Tokyoite !   Mineral Image for Tokyoite Mindat locations   Ba2Mn(VO4)2(OH) NAME ORIGIN: Commission on New Minerals and Mineral Names (CNMMN)
Tolbachite  Say TOLBACHITE Mineral Image for Tolbachite Mindat locations   CuCl2 NAME ORIGIN: Named for the locality. LOCALITY: Tolbachik volcano, Kamchatka, Russia.
Tolovkite  Say TOLOVKITE Mindat locations   IrSbS NAME ORIGIN: Named for the locality. LOCALITY: Ust'-Bel'skii massif, Tolvka River, Northeastern Russia.
Tombarthite-(Y)  Say TOMBARTHITE-(Y) Mindat locations   Y4(Si,H4)4O12-x(OH)4+2x NAME ORIGIN: Named after Thomas Fredrik Barth (1899-1971), mineralogist and petroligist, Oslo University, Oslo, Norway.
Tomichite  Say TOMICHITE Mineral Image for Tomichite Mindat locations   (V,Fe)4Ti3AsO13(OH) NAME ORIGIN: Named for Stephan A. Tomich (1914-), consulting geologist who discovered the mineral.
Tongbaite  Say TONGBAITE Mindat locations   Cr3C2 NAME ORIGIN: Named for the locality. LOCALITY: Liu Zhuang, Tongbai County, Henan, China
Tongxinite *   Mindat locations   Cu2Zn NAME ORIGIN: Named for the composition (tong=copper, xin=zinc).
Tooeleite  Say TOOELEITE Mindat locations   Fe+++(8-2x)[(As(1-x),S(x))O4]6·5(H2O) NAME ORIGIN: Named after its locality. LOCALITY: Found on waste dumps of the former gold and arsenic mines in the Gold Hill district, western Tooele County, Utah, USA.
Topaz  Say TOPAZ Mineral Image for Topaz Java Crystal form for Topaz Mindat locations   Al2SiO4(F,OH)2 NAME ORIGIN: Named after its locality. LOCALITY: Topasos Island in the Red Sea.
Topazolite - yellow *  (see Andradite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Torbernite  Say TORBERNITE Mineral Image for Torbernite Java Crystal form for Torbernite Mindat locations   Cu(UO2)2(PO4)2·8-12(H2O) NAME ORIGIN: Named after the Swedish chemist, Tornbern Bergmann (1735-1784).
Tornebohmite-(Ce)  Say TORNEBOHMITE-(CE) Mindat locations   (Ce,La,Nd)2Al(SiO4)2(OH) NAME ORIGIN: Named for Alfred Ellis Tornebohm (1839-1911), former director of the Geological Survey of Sweden.
Tornebohmite-(La)  Say TORNEBOHMITE-(LA) Mindat locations   (La,Ce)2Al(SiO4)2(OH) NAME ORIGIN: Named for Alfred Ellis Tornebohm (1839-1911), former director of the Geological Survey of Sweden.
Torreyite  Say TORREYITE Mineral Image for Torreyite Mindat locations   (Mg,Mn)9Zn4(SO4)2(OH)22·8(H2O)
Tosudite  Say TOSUDITE Mineral Image for Tosudite Mindat locations   Na0,5(Al,Mg)6(Si,Al)8O18(OH)12·5(H2O) NAME ORIGIN: Named for Toshio Sudo (1911-), Japanese mineralogist and crystallographer, University of Tokyo, Japan.
Tounkite  Say TOUNKITE Mindat locations   (Na,Ca,K)8Al6Si6O24(SO4)2Cl·(H2O) NAME ORIGIN: Named after the Tunka (Tounka) Valley near the deposits.
Tourmaline *  (see Buergerite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Tourmaline *  (see Chromdravite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Tourmaline *  (see Dravite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Tourmaline *  (see Feruvite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Tourmaline *  (see Foitite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Tourmaline *  (see Liddicoatite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Tourmaline *  (see Olenite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Tourmaline *  (see Povondraite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Tourmaline *  (see Schorl ) See Also: GOOGLE, Athena, MinDAT, MinMax
Tourmaline *  (see Uvite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Tourmaline *  (see Vanadiumdravite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Toyohaite  Say TOYOHAITE Mindat locations   Ag2FeSn3S8
Trabzonite  Say TRABZONITE Mindat locations   Ca4Si3O10·2(H2O) NAME ORIGIN: Named after it's locality. LOCALITY: Yarda Yaylasi, near Trabzon, Turkey.
Tranquillityite  Say TRANQUILLITYITE Mindat locations   Fe++8(Zr,Y)2Ti3Si3O24 NAME ORIGIN: Named for the locality. LOCALITY: Tranquility Base, Moon (Apollo 11).
Traskite  Say TRASKITE Mineral Image for Traskite Mindat locations   (Ba,Ca)9(Fe++,Mn)2Ti2(SiO3)12(OH,Cl,F)6·6(H2O) NAME ORIGIN: Named for John Boardman Trask (1824-1879), first state geologist of California.
Trattnerite !   Mindat locations   (Fe,Mg)2(Mg,Fe)3(Si12O30) NAME ORIGIN: Named for Walter Trattner, a mineral collector with excellent knowledge of the mineralogy of the area in which the species was found.
Travertine *  (see Calcite ) See Also: GOOGLE, Athena, MinDAT, MinMax
Treasurite  Say TREASURITE Mindat locations   Ag7Pb6Bi15S32 NAME ORIGIN: Named for the locality. LOCALITY: Treasury mine, Geneva district, Colorado, USA.
Trechmannite  Say TRECHMANNITE Mineral Image for Trechmannite Java Crystal form for Trechmannite Mindat locations   AgAsS2 NAME ORIGIN: Named for Charles O. Trechmenn (1851-1917), English mineralogist.
Trembathite  Say TREMBATHITE Mindat locations   (Mg,Fe++)3B7O13Cl
Tremolite  Say TREMOLITE Mineral Image for Tremolite Mindat locations   [ ]Ca2Mg5Si8O22(OH)2 NAME ORIGIN: Named after its local