There are 185 minerals that start with the letter T. From Taaffeite to Tyuyamunite. Minerals are naturally occurring, inorganic solids with a defined chemical composition and a crystalline structure. They are the building blocks of rocks and are classified based on their chemical properties, crystal structure, and texture. Minerals form through a variety of geological processes, including crystallization from molten rock, precipitation from solutions, and metamorphism under high pressure and temperature. They are essential not only for geological processes but also for many industrial applications and are critical for life, serving as nutrients in biological systems.
An intriguing fact about minerals is that some larval insects use mineral particles from the environment to enhance their camouflage, adapting to their surroundings for protection against predators. This innovative use of minerals demonstrates the complex interactions between organisms and their natural habitats.
Here’s what each of the columns in the table means:
Column Name: This column indicates the specific chemical elements or compounds that make up the mineral, defining its identity and properties.
Mohs hardness: This column provides a numerical scale from 1 to 10 that ranks the hardness of the mineral based on its ability to scratch or be scratched by other substances.
Common uses: This column outlines the various applications or industries where the mineral is utilized, highlighting its practical importance in everyday life and technology.
Description: This column includes a brief overview of the mineral’s appearance, characteristics, and unique features, providing essential information for identification and understanding its role in geology and industry.
Minerals That Start With T
| Minerals | chemical composition | Mohs hardness | common uses |
|---|---|---|---|
| Taaffeite | BeO�MgO�Al2O3 | 8.0-9.0(8.5) | gemstone, mineral collection |
| Tabbusuite | Na(UO2)2(VO4)2�6-8H2O | 2.0-3.0(2.5) | none |
| Tabbyite | (W,Mo)O3 | 5-6(5.5) | Decorative mineral |
| Tacharanite | Ca4(Si2O7)(OH)2�2H2O | 3-4(3.5) | None |
| Tadzhikite-(Ce) | (Ce,La,Nd,Th)(Ti,Nb)O4 | 5-6(5.5) | None |
| Taeniolite | K(Mg,Fe)2.5(Si4O10)(F,OH)2 | 2-3(2.5) | None |
| Tagamanite | Mn2+Mn3+2O4 | 5.5-6.5(6.0) | none |
| Tagamite | (Fe,Mg)SiO3 | 5.0-6.0 | Geological research |
| Tahumite | Ca2Cu5(AsO4)4(OH)4�4-5H2O | 3.5-4.5(4.0) | none |
| Taiwanite | Cu2+2Cu+2(AsO4)2(OH)2 | 3.5-4.5(4.0) | none |
| Takanelite | (Ca,Sr)2(UO2)2(VO4)2�6-8H2O | 2.0-3.0 | not commonly used |
| Talbotite | CaAl2(VO4)2(OH)4�6H2O | 3-4(3.5) | None |
| Talc | Mg3Si4O10(OH)2 | 1(1.0) | Cosmetics, Filler, Insulation |
| Tallhornite | Cu(SeO3)�2H2O | 2.0-3.0 | not commonly used |
| Tallite | Ca3Cu4(AsO4)2(OH)4 | 3.5-4.0 | Geological research |
| Talmessite | Ca(UO2)2(VO4)2�6-8H2O | 2.0-3.0(2.5) | none |
| Talnakhite | (Cu,Fe)9S8 | 3.5-4.0(3.5) | Ore mineral |
| Tamalite | 2(Mn,Fe)O�SiO2 | 5-6(5.5) | Collector’s item |
| Tamboite | Fe2+Fe3+2(AsO4)2(OH)2 | 4-5(4.5) | None |
| Tancaite-(Ce) | (Ce,La,Nd)2(UO2)2(CO3)4�4-6H2O | 2.0-3.0 | not commonly used |
| Tangeite | Cu2(UO2)2(VO4)2�6-8H2O | 3-4(3.5) | None |
| Tantaite | (Ta,Nb)4+O6 | 5.5-6.5 | Electronic components |
| Tantalaeschynite-(Y) | (Y,REE)(Ta,Nb)O4 | 5.0-6.0(5.5) | none |
| Tantalate | (Ta,Nb)2O6 | 6.0-7.0(6.5) | refractory, electronic components |
| Tantalite | (Fe,Mn)Ta2O6 | 6-6.5(6.0) | Electronics, Jewelry |
| Tanteuxenite-(Nd) | (Nd,Y,U,Th)(Nb,Ta)O4 | 5.0-5.5(5.0) | Mineral specimens |
| Tanteuxenite-(Y) | (Y,REE)(Nb,Ta)O4 | 5.0-6.0 | not commonly used |
| Tapiolite-(Fe) | (Fe,Mn)(Ta,Nb)2O6 | 6.0-7.0 | not commonly used |
| Tapiolite-(Mn) | (Mn,Fe)(Ta,Nb)2O6 | 6.0-7.0 | not commonly used |
| Taramellite | Ba(UO2)2(VO4)2�6-8H2O | 3-4(3.5) | None |
| Tarapacaite | K2CrO4 | 2.5-3.0(2.75) | Pigment |
| Tarasovite | Ca(UO2)2(VO4)2�6-8H2O | 2.0-3.0(2.5) | none |
| Tarbuttite | Zn2(VO4)(OH) | 4-5(4.5) | None |
| Tarltonite | Ca(UO2)2(VO4)2�6-8H2O | 2.0-3.0(2.5) | none |
| Tarynaite | Pb(UO2)2(VO4)2�6-8H2O | 3-4(3.5) | None |
| Tashelgite | Ca2Mg5(BO3)2Si8O22(OH)2 | 6-6.5(6.0) | None |
| Tausonite | SrTiO3 | 5-6(5.5) | Ferrites, Ceramics |
| Tawmawite | Mn2+Sn4+O4 | 6.0-6.5(6.0) | Mineral specimens |
| Taylorite | (NH4,K)Fe(SO4)2�6H2O | 2.0-3.0 | Fertilizers |
| Tazheranite | (Zr,Ce,Ca,U,Th)O2-x | 6-7(6.5) | None |
| Teallite | PbSnS2 | 2.0-2.5(2.0) | Mineral specimens |
| Teberesite | Ca2(SO4)Cl2�2H2O | 2.0-3.0(2.5) | Mineral specimens |
| Tectite | SiO2 | 5.5-6.5(6.0) | Jewelry, Ornamental |
| Teepleite | Na2Cu(UO2)2(VO4)2�6-8H2O | 2.0-3.0(2.5) | none |
| Teineite | Cu2+[(UO2)2(VO4)2]�8H2O | 2.0-3.0 | not commonly used |
| Tekunoite | Mn3+AlO3(OH) | 6.0-6.5(6.0) | Mineral specimens |
| Tellurantimony | (Te,Sb) | 3.5-4.0(3.5) | Mineral specimens |
| Tellurite | TeO2 | 3.5-4(3.75) | None |
| Tellurium | Te | 2.0-2.5(2.0) | Electronics, solar cells |
| Tellurobismuthite | Bi2Te3 | 2-2.5(2.25) | None |
| Tellurolamprite | Cu2+Te4+O3 | 3.5-4.0(3.75) | Collector’s mineral |
| Telluromandarinoite | Cu2+(TeO3) | 3.5-4.5(4.0) | none |
| Temagamite | Pd3HgTe3 | 2.5-3.0(2.5) | Mineral specimens |
| Tembite | Ca(UO2)2(VO4)2�6-8H2O | 2.5-3.5(3.0) | Collector’s item |
| Temnouranite | (U,Fe)O2 | 5-6(5.5) | None |
| Tengerite-(Y) | (Y,Ln)CO3(OH) | 3.0-4.0(3.5) | Collector’s mineral |
| Tennantite | Cu12As4S13 | 3.0-4.0 | Copper production |
| Tenorite | CuO | 3.5-4.0 | not commonly used |
| Tephroel ite | Ni2+[(UO2)2(VO4)2]�6-8H2O | 2.5-3.5(3.0) | Collector’s item |
| Terlinguaite | Hg2+Cl(OH) | 2.0-3.0 | Historical use |
| Ternesite | Ca5(SiO4)2SO4 | 6-7(6.5) | Cement Additive |
| Terpyrite | Cu3(AsO4)(OH)3 | 3.5-4.0 | not commonly used |
| Terranovaite | Mg7Si8O22(OH)2 | 5.5-6.0(5.5) | Mineral specimens |
| Terronite | (UO2)3(VO4)2�6-8H2O | 2.0-3.0 | not commonly used |
| Terschovite | (UO2)2(VO4)(OH) | 2.0-3.0(2.5) | none |
| Terskite | Na2MgAl4Si7O20(OH)4 | 5.0-6.0(5.5) | Collector’s mineral |
| Teschenite | (Ca,Na)(Al,Si)2O6�XH2O | 5.0-6.0(5.5) | none |
| Tetradymite | Bi2Te2S | 1.5-2(1.75) | None |
| Tetraferroplatinum | PtFe | 5-6(5.5) | Catalysts |
| Tetrahedrite | (Cu,Fe,Zn,Ag)12Sb4S13 | 3-4.5(3.75) | Ore of Copper |
| Thalenite-(Y) | Y3Si3O10(OH) | 6-7(6.5) | None |
| Thalfenisite | (Mn2+,Mg)2Fe3+(AsO4)2�4-6H2O | 3.5-4.0(3.5) | Mineral specimens |
| Thaliumferrite | (Tl,K)(Fe3+,Al)O2 | 5.0-5.5(5.0) | Mineral specimens |
| Thallomelane | AlMnO2(OH) | 4.0-5.0(4.5) | Pigment |
| Thaumasite | Ca3Si(SO4)(CO3)(OH)6�12H2O | 3.5-4(3.75) | Concrete Additive |
| Thaurerite | (Cu,Zn)2(UO2)2(VO4)2�6-8H2O | 2.0-3.0 | not commonly used |
| Theodoreite | MnTi2O5 | 5.0-6.0(5.5) | Collector’s item |
| Theophrastite | Ni(OH)2 | 2.5-3.5(3.0) | Collector’s item |
| Thermonatrite | Na2CO3�H2O | 1.0-1.5(1.25) | Cleaning agents |
| Therzolite | Mg,Fe,Ca,Al silicate | 6.0-7.0(6.5) | Gemstone |
| Thielite | Zn2(VO4)(OH) | 4.0-4.5(4.0) | Mineral specimens |
| Thierschite | Ca(UO2)2(AsO4)2�8H2O | 2.0-3.0(2.5) | Radioactive waste storage |
| Thomasclarkite-(Y) | (Y,REE)2(UO2)2(CO3)2(OH)4�4-6H2O | 3-4(3.5) | None |
| Thomsenolite | NaCaAlF6 | 3-4(3.5) | None |
| Thomsonite | (Na,Ca)2Al3Si3O10�6H2O | 5.0-5.5(5.0) | Collector’s item |
| Thorianite | ThO2 | 6-7(6.5) | Research, Optics |
| Thorikosite | Ca(UO2)2(VO4)2�6-8H2O | 3.0-3.5(3.0) | Mineral specimens |
| Thorite | ThSiO4 | 4-5(4.5) | Research, Optics |
| Thorium | Th | 5.5-6.5(6.0) | Nuclear fuel, ceramics |
| Thoriumnitride | ThN | 8.0-8.5(8.0) | Nuclear fuel |
| Thortveitite | Sc2Si2O7 | 8-9(8.5) | Research |
| Thucolite | (U,Th,Pb,Cu)C | 1.5-2(1.75) | None |
| Thulite | Ca2(Al,Fe3+)3(SiO4)3(OH) | 6.0-7.0 | not commonly used |
| Tianite | CaTi4+O5 | 5-6(5.5) | Ceramics, Abrasives |
| Tilasite | CaMgAsO4F | 4-5(4.5) | None |
| Tincalconite | Na2B4O7�5H2O | 2.0-2.5(2.0) | Industrial mineral, insecticide |
| Tintinaite | Cu3AsS4 | 3.0-3.5(3.0) | Ore mineral |
| Tirodite | Mn2+Mn3+2(SiO4)2(OH) | 5.0-6.0 | not commonly used |
| Tirolite | Ca(UO2)2(VO4)2�6-8H2O | 3-4(3.5) | None |
| Tissintite | (Ca,Na,K)(Mg,Fe2+)(Al,Si)4O10(OH)2 | 2.5-3.0(2.5) | Mineral specimens |
| Tistarite | Ti2O3 | 8-9(8.5) | Refractory, Ceramics |
| Tiszaite | Pb2(UO2)2(VO4)2�6-8H2O | 3-4(3.5) | None |
| Titanite | CaTiSiO5 | 5-5.5(5.25) | Gemstone, Abrasive |
| Titanomagnetite | (Fe,Ti)3O4 | 5.0-6.0(5.5) | Iron production |
| Titanowodginite | (Ti,Fe3+,Sn)4+(Ta,Nb)2O8 | 5.5-6.5 | Geological research |
| Titanwickmanite | Ni2+TiO4 | 6.0-6.5(6.0) | Mineral specimens |
| Tivalite | Ca(UO2)2(VO4)2�6-8H2O | 3-4(3.5) | None |
| Tizerzaite | (Zn,Cu)2(UO2)2(VO4)2�6-8H2O | 3-4(3.5) | None |
| Todokite | (Mn,Mg,Cu,Ni)6O12�3-4H2O | 2.0-3.0(2.5) | Collector’s mineral |
| Tolbachite | CuCl2 | 2.0-3.0(2.5) | Collector’s mineral |
| Tombarthite | (Ce,La,Nd,Pr)TiO3(OH) | 5-6(5.5) | None |
| Tomichite | (Ca,Mn2+)(V5+,As5+)O4 | 4.0-4.5(4.0) | Mineral specimens |
| Tonalite | (Na,Ca)(Al,Si)4O8 | 6.0-6.5 | Construction, landscaping |
| Tondiite | (Mn2+,Fe2+,Mg)3O4 | 5.5-6.0(5.5) | Mineral specimens |
| Tooeleite | Fe6(AsO3)4(SO4)(OH)4�4H2O | 2-3(2.5) | None |
| Topaz | Al2SiO4(F,OH)2 | 8(8.0) | Gemstone, Abrasive |
| Topazolite | Ca3Al2(SiO4)3 | 6.5-7.0(6.5) | Gemstone, mineral specimens |
| Torberneite | Cu(UO2)2(VO4)2�8-12H2O | 2.0-3.0 | not commonly used |
| Torbernite | Cu(UO2)2(VO4)2�8-12H2O | 3-4(3.5) | Radioactive Indicator |
| Tordrillite | CaFe3+2Ti4O11 | 5.5-6.5(6.0) | Collector’s item |
| Torfterite | Ca(UO2)2(VO4)2�6-8H2O | 2.5-3.0 | Geological research |
| Torinosugilite | KMnO4 | 2.0-2.5(2.0) | Mineral specimens |
| Tormaline | NaMg3Al6(BO3)3Si6O18(OH,F)4 | 7.0-8.0 | gemstones, abrasives, ceramics |
| Tornierbeckite | KNa3Cu2+2(VO4)2(OH)2 | 3.0-4.0 | Geological research |
| Torreyite | Zn5(CO3)2(OH)6 | 4.0-4.5(4.0) | Mineral specimens |
| Torricelliite | Cu(SO4)(OH) | 2.5-3.0(2.75) | Collector’s mineral |
| Torridgeite | Cu2(UO2)2(VO4)2�6-8H2O | 2.0-3.0 | not commonly used |
| Torsite | ThSiO4 | 4-5(4.5) | None |
| Torvisdalite | NaCaAl4(PO4)3(OH)4�4H2O | 4.0-4.5(4.0) | Mineral specimens |
| Toveite | Mg2+Fe3+2O4 | 5.5-6.0(5.75) | Collector’s mineral |
| Tranquillityite | (Fe,Mg,Ca)8Ti3(SiO4)2(O,OH)8 | 6-7(6.5) | None |
| Trapichite | Ca2(UO2)3(VO4)3�8-12H2O | 2.5-3.0(2.75) | Radioactive waste storage |
| Traskite | NaCa(UO2)2(VO4)2�6-8H2O | 2.5-3.0 | Geological research |
| Traurite | (Mn,Fe)2(VO4)(OH) | 4-5(4.5) | None |
| Travertine | CaCO3 | 3.0-4.0(3.5) | Building stone, sculpture |
| Trebeurdenite | Fe3+2(AsO4)(OH) | 4.0-5.0 | Geological research |
| Trechmannite | AgAsS2 | 2-3(2.5) | None |
| Tremolite | Ca2Mg5Si8O22(OH)2 | 5-6(5.5) | Insulation, Filler |
| Trevone | CuTe2 | 3.0-4.0(3.5) | Collector’s mineral |
| Trevorite | NiFe2O4 | 5.5-6.5(6.0) | Magnets, Ore |
| Trickenit | Fe2+3(AsO4)2�8H2O | 2.5-3.0 | Geological research |
| Triclinic Uraninite | UO2 | 5.0-6.0(5.5) | Nuclear fuel |
| Tridymite | SiO2 | 7(7.0) | Ceramics, Refractories |
| Trigonal Uraninite | UO2 | 5.0-6.0(5.5) | Nuclear fuel |
| Trigonite | Pb(UO2)2(VO4)2�6-8H2O | 3-4(3.5) | None |
| Triguia | Pb(UO2)2(VO4)2�6-8H2O | 2.0-3.0 | not commonly used |
| Trinitite | SiO2, CaO, MgO, Al2O3, Fe2O3 | 6.0-7.0(6.5) | Collector’s item |
| Triphylite | Li(Fe,Mn)PO4 | 5-6(5.5) | None |
| Triplite | (Fe,Mn)2+PO4(F,OH) | 5-6(5.5) | None |
| Triploidite | (Mn,Fe)2+PO4(OH) | 5.0-5.5(5.0) | Collector’s item |
| Tripuhyite | FeSbO4 | 5-6(5.5) | None |
| Triskelite | Pb3Cu2(AsO4)2(OH)2 | 3.5-4.0 | Geological research |
| Tritomite-(Ce) | (Ce,La,Nd,Th)9(SiO4)6(OH,F)3 | 5-6(5.5) | None |
| Troegerite | UO2AsO4�4H2O | 2.0-3.0(2.5) | Radioactive waste storage |
| Trogerite | (UO2)2(AsO4)2�8-12H2O | 2-3(2.5) | None |
| Troilit | FeS | 4.0-5.0 | Geological research |
| Troilite | FeS | 4.0-5.0 | not commonly used |
| Trolite | FeS | 4.0-5.0(4.5) | Collector’s mineral |
| Trolleite | Al(AsO4)(OH) | 3.5-4(3.75) | None |
| Trona | Na3(CO3)(HCO3)�2H2O | 2.5-3.5(3.0) | Chemical Feedstock |
| Tsaregorodtsevite | Bi(VO4) | 3.5-4(3.75) | None |
| Tsavorite | Ca3Al2(SiO4)3 | 7.0-7.5(7.25) | Gemstone |
| Tschermakite | Ca2(Mg,Fe)3AlSi6(O,OH)22 | 5.5-6.0(5.75) | Collector’s mineral |
| Tschernichite | Cu(UO2)2(VO4)2�6-8H2O | 2.5-3.0(2.75) | Radioactive waste storage |
| Tsilaisite | NaMn2+3(PO4)2(OH) | 5.0-6.0(5.5) | Collector’s mineral |
| Tsumcorite | PbFe3+2(AsO4)2(OH)2 | 3.5-4.0(3.5) | Collector’s item |
| Tsumebite | Pb2Cu(PO4)(SO4)(OH) | 3.5-4(3.75) | None |
| Tsumoite | BiTe | 2-2.5(2.25) | None |
| Tucanite | (Cu,Zn)2(VO4)(OH) | 4-5(4.5) | None |
| Tucekite | Na2(UO2)2(VO4)2�6-8H2O | 2.0-3.0 | not commonly used |
| Tuebenite | (UO2)3(VO4)2�5-8H2O | 3-4(3.5) | None |
| Tugarinovite | UO2 | 5.0-6.0 | not commonly used |
| Tugtupite | Na4BeAlSi3O9Cl | 5-6(5.5) | Gemstone |
| Tulameenite | Pt3Fe | 4.0-5.0(4.5) | Jewelry, catalysts |
| Tulsite | Mg3(VO4)2(OH)2 | 4-5(4.5) | None |
| Tumataite | CaUO2VO4(OH)�3-4H2O | 2.5-3.5(3.0) | Collector’s item |
| Tundrite-(Nd) | NdCa2(CO3)3F | 4-5(4.5) | None |
| Tunellite | BaB5O8(OH)�H2O | 2.0-3.0 | not commonly used |
| Tungstibite | WO3 | 5.0-6.0(5.5) | Ceramics, electronics |
| Tungstite | WO3�H2O | 2-3(2.5) | None |
| Turkestanite | Ca(UO2)2(VO4)2�6-8H2O | 3-4(3.5) | None |
| Turquoise | CuAl6(PO4)4(OH)8�4H2O | 5-6(5.5) | Gemstone, Pigment |
| Tverrite | Cu2+(UO2)2(VO4)2�6-8H2O | 2.5-3.5(3.0) | Collector’s item |
| Tyrolite | Ca(UO2)2(VO4)2�6-8H2O | 2-3(2.5) | None |
| Tyuyamunite | Ca(UO2)2(VO4)2�6-8H2O | 2.5-3.5(3.0) | Collector’s item |
Descriptions
Taaffeite
A rare beryllium magnesium aluminum oxide mineral, discovered in 1945. It is typically a pink or purple color and is a collector’s item due to its rarity.
Tabbusuite
A uranyl vanadate mineral that forms bright green, tabular crystals. It is relatively rare and found in arid, oxidizing environments.
Tabbyite
A rare tungsten-molybdenum oxide mineral with a distinctive tabular crystal habit and reddish-brown to greenish-brown color.
Tacharanite
A rare calcium silicate hydrate mineral found in metamorphosed limestone. It forms small prismatic crystals and rosette-like aggregates.
Tadzhikite-(Ce)
A rare cerium-rich titanium niobate mineral. It forms yellow to green prismatic crystals and occurs in granitic pegmatites.
Taeniolite
A rare layered silicate mineral of the mica group. It forms small hexagonal plates and is found in pegmatites and alkaline intrusions.
Tagamanite
A rare manganese oxide mineral that forms black, octahedral crystals. It is found in manganese ore deposits and some metamorphic rocks.
Tagamite
A pyroxene mineral found in impact craters, formed by the rapid cooling of molten rock.
Tahumite
A rare copper arsenic hydroxide mineral that forms blue to green, prismatic crystals. It is found in oxidized copper deposits.
Taiwanite
A rare copper arsenic hydroxide mineral that forms blue to blue-green, tabular crystals. It is found in oxidized copper deposits.
Takanelite
A hydrous calcium-strontium uranyl vanadate mineral with a green or yellow-green color. It is found in uranium-rich deposits and is a secondary uranium mineral.
Talbotite
A rare calcium aluminum vanadate hydroxide hydrate mineral. It forms green to blue-green tabular crystals and crusts.
Talc
A soft, argillic mineral used in many consumer and industrial products. It has a soapy feel and is the softest known mineral.
Tallhornite
A copper selenate mineral with a bright green color and a silky luster. It is a rare secondary mineral found in copper-selenium deposits.
Tallite
A rare copper arsenic hydroxide mineral, typically found in oxidized copper deposits.
Talmessite
A uranyl vanadate mineral that forms bright green, tabular crystals. It is relatively rare and found in arid, oxidizing environments.
Talnakhite
A copper-iron sulfide mineral that forms in hydrothermal veins and as an accessory mineral in mafic and ultramafic igneous rocks.
Tamalite
A rare manganese silicate mineral that forms dark brown to black, prismatic crystals.
Tamboite
A rare iron arsenic hydroxide mineral found in oxidized copper and iron ores. It has a deep green to yellow-green color and is used as a minor ore of iron and arsenic.
Tancaite-(Ce)
A hydrous cerium-lanthanum uranyl carbonate mineral with a green or yellow-green color. It is a rare secondary uranium mineral found in uranium-rich deposits.
Tangeite
A rare uranium vanadate mineral found in oxidized uranium deposits. It has a bright green color and is used as a minor ore of uranium and vanadium.
Tantaite
A rare tantalum oxide mineral, used in the production of tantalum-based electronic components and capacitors.
Tantalaeschynite-(Y)
A rare yttrium tantalum niobate mineral that forms brown to black, pyramidal crystals. It is found in pegmatites and other rare-earth enriched deposits.
Tantalate
A group of tantalum and niobium oxides that form hard, dense crystals. They are used in electronic components, cutting tools, and other industrial applications.
Tantalite
A rare iron manganese tantalum oxide mineral. It forms black to brown prismatic or tabular crystals and is a primary source of tantalum.
Tanteuxenite-(Nd)
A rare earth niobate mineral that forms yellow to brown prismatic crystals.
Tanteuxenite-(Y)
A yttrium-rich niobium and tantalum oxide mineral with a brown or reddish-brown color. It is a rare accessory mineral found in pegmatites and granitic rocks.
Tapiolite-(Fe)
An iron-rich tantalum and niobium oxide mineral with a black or dark brown color and a metallic luster. It is a rare accessory mineral found in pegmatites and granitic rocks.
Tapiolite-(Mn)
A manganese-rich tantalum and niobium oxide mineral with a black or dark brown color and a metallic luster. It is a rare accessory mineral found in pegmatites and granitic rocks.
Taramellite
A rare barium uranyl vanadate hydrate mineral. It forms yellow to greenish-yellow tabular crystals.
Tarapacaite
A potassium chromate mineral with a bright yellow color, found in arid regions.
Tarasovite
A uranyl vanadate mineral that forms bright green, tabular crystals. It is relatively rare and found in arid, oxidizing environments.
Tarbuttite
A rare zinc vanadate hydroxide mineral. It forms green to yellow prismatic crystals and nodular masses.
Tarltonite
A uranyl vanadate mineral that forms bright green, tabular crystals. It is relatively rare and found in arid, oxidizing environments.
Tarynaite
A rare lead uranyl vanadate hydrate mineral. It forms yellow to greenish-yellow tabular crystals.
Tashelgite
A rare calcium magnesium borosilicate mineral. It forms transparent to white prismatic crystals.
Tausonite
A rare strontium titanate mineral. It forms opaque, pale green to yellow cuboctahedral crystals and is found in kimberlites.
Tawmawite
A rare tin-manganese oxide mineral that forms black, metallic octahedral crystals.
Taylorite
A hydrous iron and ammonium sulfate mineral, found in some volcanic deposits and used as a fertilizer.
Tazheranite
A rare zirconium-rich oxide mineral. It forms tiny isometric crystals and is found in alkaline intrusive rocks.
Teallite
A rare lead-tin sulfide mineral that forms silver-gray to lead-gray metallic crystals.
Teberesite
A rare calcium sulfate chloride hydrate mineral that forms white to gray crystalline masses.
Tectite
A natural glass formed by the impact of meteorites. It is black to green-black in color and fractures conchoidally.
Teepleite
A rare uranyl vanadate mineral that forms bright green, tabular crystals. It is found in arid, oxidizing environments associated with other uranium minerals.
Teineite
A hydrous copper uranyl vanadate mineral with a bright green color. It is a rare secondary uranium mineral found in uranium-rich deposits.
Tekunoite
A rare manganese aluminum oxide hydroxide mineral that forms black to dark brown crystals.
Tellurantimony
A rare tellurium-antimony mineral that forms silvery-gray metallic crystals or masses.
Tellurite
A rare tellurium oxide mineral. It forms yellow to orange-yellow tabular or acicular crystals.
Tellurium
A rare, silvery-white, metalloid element that is used in specialized electronics and solar cell applications.
Tellurobismuthite
A rare bismuth telluride mineral. It forms silver-white to lead-gray metallic hexagonal crystals.
Tellurolamprite
A rare copper tellurate mineral, found in oxidized hydrothermal deposits.
Telluromandarinoite
A rare copper tellurite mineral that forms light green to yellow, prismatic crystals. It is found in the oxidation zones of tellurium-bearing ore deposits.
Temagamite
A rare palladium-mercury telluride mineral that forms silver-white metallic crystals.
Tembite
A rare uranium vanadate mineral that forms bright yellow to greenish-yellow, prismatic crystals.
Temnouranite
A rare uranium iron oxide mineral. It forms brown to black cubic or octahedral crystals.
Tengerite-(Y)
An yttrium and rare earth carbonate hydroxide mineral, a source of yttrium.
Tennantite
A copper arsenic sulfide mineral, an important ore of copper and a source of arsenic.
Tenorite
A copper oxide mineral with a black color and a metallic luster. It is a secondary mineral formed by the oxidation of copper-bearing minerals and is found in copper deposits.
Tephroel
ite
A rare nickel uranium vanadate mineral that typically forms bright green, prismatic crystals.
Terlinguaite
A rare mercury chloride hydroxide mineral, once used in the production of mercury-based paints and pigments.
Ternesite
A rare calcium silicate sulfate mineral. It forms white to gray prismatic crystals and is found in cement clinker.
Terpyrite
A copper arsenic hydroxide mineral with a blue or green color and a vitreous to silky luster. It is a rare secondary mineral found in copper-arsenic deposits.
Terranovaite
A rare magnesium silicate mineral that forms white to pale green fibrous or prismatic crystals.
Terronite
A hydrous uranyl vanadate mineral with a green or yellow-green color. It is a rare secondary uranium mineral found in uranium-rich deposits.
Terschovite
A uranyl vanadate hydroxide mineral that forms bright yellow to green, tabular crystals. It is relatively rare and found in arid, oxidizing environments.
Terskite
A sodium magnesium aluminosilicate mineral, found in alkaline igneous rocks.
Teschenite
A group of hydrous calcium sodium aluminosilicate minerals that form gray to green, massive or fine-grained rocks. They are found in alkaline igneous intrusions.
Tetradymite
A rare bismuth telluride sulfide mineral. It forms silvery-white to lead-gray metallic hexagonal crystals.
Tetraferroplatinum
A rare iron platinum alloy mineral. It forms cubic or octahedral silver-white metallic crystals.
Tetrahedrite
A common copper antimony sulfide mineral. It forms gray to black metallic cubic crystals and is an important copper ore.
Thalenite-(Y)
A rare yttrium silicate hydroxide mineral. It forms yellow to orange prismatic crystals.
Thalfenisite
A rare manganese-magnesium-iron arsenate hydrate mineral that forms green to yellow crystals or crusts.
Thaliumferrite
A rare thallium-bearing iron oxide mineral that forms black to dark brown crystals or massive forms.
Thallomelane
A manganese aluminum oxide hydroxide mineral, used as a blue pigment.
Thaumasite
A rare calcium silicate sulfate carbonate hydroxide hydrate mineral. It forms white to colorless prismatic crystals.
Thaurerite
A hydrous copper-zinc uranyl vanadate mineral with a green or yellow-green color. It is a rare secondary uranium mineral found in uranium-rich deposits.
Theodoreite
A rare manganese titanate mineral that typically forms black, metallic-looking, prismatic crystals.
Theophrastite
A rare nickel hydroxide mineral that forms green to blue-green, tabular crystals or compact masses.
Thermonatrite
A hydrous sodium carbonate mineral, a component of natural soda ash.
Therzolite
A rare magnesium-rich variety of olivine, occasionally used as a gemstone.
Thielite
A rare zinc vanadate mineral that forms green to yellow prismatic crystals or compact masses.
Thierschite
A hydrous calcium uranium arsenate mineral, a minor uranium ore.
Thomasclarkite-(Y)
A rare yttrium-rich uranyl carbonate hydroxide hydrate mineral. It forms yellow to yellowish-green tabular crystals.
Thomsenolite
A rare sodium calcium aluminum fluoride mineral. It forms white to colorless cubic or octahedral crystals.
Thomsonite
A rare sodium-calcium aluminosilicate mineral that forms white to gray, radially arranged, fibrous crystals or compact masses.
Thorianite
A rare thorium oxide mineral. It forms black to brownish-black cubic crystals and is a primary source of thorium.
Thorikosite
A rare calcium uranium vanadate hydrate mineral that forms yellow to green prismatic crystals or crusts.
Thorite
A rare thorium silicate mineral. It forms brown to black tetragonal crystals and is a primary source of thorium.
Thorium
A radioactive, silvery-gray, metallic element that is used as a nuclear fuel and in specialized ceramic applications.
Thoriumnitride
A rare thorium nitride mineral that forms black cubic crystals or grains.
Thortveitite
A rare scandium inosilicate mineral. It forms colorless to pale green monoclinic crystals and is a primary source of scandium.
Thucolite
A rare uranium-bearing hydrocarbon mineral. It forms black to dark brown massive to nodular aggregates.
Thulite
A calcium aluminum silicate hydroxide mineral with a pink, red, or violet color and a vitreous to dull luster. It is a rare mineral found in metamorphic rocks, pegmatites, and some hydrothermal veins.
Tianite
A rare titanium oxide mineral, used in some specialized ceramic and abrasive applications due to its hardness and refractory properties.
Tilasite
A rare calcium magnesium arsenate fluoride mineral. It forms pale green to white prismatic crystals.
Tincalconite
A hydrous sodium borate mineral that forms white to gray monoclinic crystals or massive forms.
Tintinaite
A rare copper arsenic sulfide mineral that forms metallic gray to black crystals or massive forms.
Tirodite
A manganese silicate mineral with a dark brown or black color and a vitreous to dull luster. It is a rare mineral found in metamorphic rocks and manganese ore deposits.
Tirolite
A rare calcium uranyl vanadate hydrate mineral. It forms pale yellow to green tabular or prismatic crystals.
Tissintite
A rare calcium-bearing phyllosilicate mineral that forms pale green to gray lamellar crystals.
Tistarite
A rare titanium oxide mineral, valued for its extreme hardness and use in high-temperature refractory and ceramic applications.
Tiszaite
A rare lead uranyl vanadate hydrate mineral. It forms yellow to yellowish-green tabular crystals.
Titanite
A common calcium titanium silicate mineral. It forms yellow, brown, or green prismatic crystals and is used in jewelry and as an abrasive.
Titanomagnetite
A titanium-bearing variety of the iron oxide mineral magnetite that is an important iron ore.
Titanowodginite
A rare titanium-bearing tantalum-niobium oxide mineral, found in some granitic pegmatites.
Titanwickmanite
A rare nickel titanium oxide mineral that forms dark green to black cubic crystals or massive forms.
Tivalite
A rare calcium uranyl vanadate hydrate mineral. It forms pale yellow to green tabular or prismatic crystals.
Tizerzaite
A rare zinc copper uranyl vanadate hydrate mineral. It forms yellow to green tabular crystals.
Todokite
A hydrous manganese oxide mineral, found in manganese nodules.
Tolbachite
A rare copper chloride mineral, found in volcanic fumaroles.
Tombarthite
A rare cerium titanium hydroxide mineral, found in carbonatite and alkaline igneous rocks. It is a minor source of cerium and titanium.
Tomichite
A rare calcium-manganese vanadate-arsenate mineral that forms yellow to orange prismatic crystals.
Tonalite
A type of intrusive igneous rock, composed primarily of quartz, plagioclase feldspar, and minor amounts of dark minerals.
Tondiite
A rare manganese-iron oxide mineral that forms dark brown to black octahedral crystals.
Tooeleite
A rare iron arsenic sulfate hydroxide hydrate mineral. It forms red to brown fibrous or acicular crystals.
Topaz
A common aluminum silicate fluoride hydroxide mineral. It forms colorless to various shades of yellow, orange, blue, and pink prismatic crystals.
Topazolite
A rare calcium aluminum silicate garnet that forms yellow to greenish-yellow dodecahedral crystals.
Torberneite
A hydrous copper uranyl vanadate mineral with a green or yellow-green color. It is a secondary uranium mineral found in uranium-rich deposits.
Torbernite
A rare copper uranyl vanadate hydrate mineral. It forms emerald-green tabular or square crystals and is a secondary uranium mineral.
Tordrillite
A rare calcium iron titanate mineral that forms black, metallic-looking, prismatic crystals.
Torfterite
A rare uranium vanadate mineral, found in some uranium-bearing deposits.
Torinosugilite
A rare potassium manganese oxide mineral that forms black prismatic crystals or massive forms.
Tormaline
A borosilicate mineral that occurs in many varieties with different colors, including black, brown, blue, green, and yellow. It is widely used as a gemstone and in various industrial applications.
Tornierbeckite
A rare potassium sodium copper vanadate hydroxide mineral, found in some oxidized copper deposits.
Torreyite
A rare zinc carbonate hydroxide mineral that forms white to pale green prismatic crystals or massive forms.
Torricelliite
A rare copper sulfate hydroxide mineral, found in copper ore deposits.
Torridgeite
A hydrous copper uranyl vanadate mineral with a green or yellow-green color. It is a rare secondary uranium mineral found in uranium-rich deposits.
Torsite
A rare thorium silicate mineral. It forms brown to black tetragonal crystals and is similar to thorite.
Torvisdalite
A rare sodium calcium aluminum phosphate hydroxide hydrate mineral that forms white to pale yellow crystals or masses.
Toveite
A magnesium iron oxide mineral, found in metamorphic and igneous rocks.
Tranquillityite
A rare iron, magnesium, and titanium silicate mineral discovered in lunar rocks brought back by the Apollo 11 mission. It is a distinctive indicator of lunar basalts.
Trapichite
A hydrous calcium uranium vanadate mineral, a secondary uranium ore.
Traskite
A rare sodium calcium uranium vanadate hydrate mineral, found in some uranium-bearing deposits.
Traurite
A rare manganese iron vanadate hydroxide mineral, found in oxidized vanadium and manganese deposits. It has a deep red-brown color.
Travertine
A form of limestone deposited by mineral springs, used as a decorative stone.
Trebeurdenite
A rare iron arsenic hydroxide mineral, found in some oxidized iron deposits.
Trechmannite
A rare silver arsenic sulfide mineral. It forms silver-white to gray metallic prismatic crystals.
Tremolite
An amphibole group mineral. It forms white to gray or green prismatic to fibrous crystals and is found in metamorphic rocks.
Trevone
A rare copper telluride mineral, found in hydrothermal ore deposits.
Trevorite
A rare nickel iron oxide mineral. It forms black isometric octahedral crystals and is an ore of nickel.
Trickenit
A rare hydrous iron arsenic mineral, found in some oxidized iron deposits.
Triclinic Uraninite
A rare polymorph of uraninite, a major uranium ore.
Tridymite
A high-temperature polymorph of quartz, used in some specialized ceramic and refractory products due to its high-temperature stability.
Trigonal Uraninite
A rare polymorph of uraninite, a major uranium ore.
Trigonite
A rare lead uranyl vanadate hydrate mineral. It forms yellow to green tabular crystals.
Triguia
A hydrous lead uranyl vanadate mineral with a green or yellow-green color. It is a rare secondary uranium mineral found in uranium-rich deposits.
Trinitite
A rare, glassy mineral formed from the first atomic bomb test in 1945, consisting of fused desert sand, rock, and other materials.
Triphylite
A rare lithium iron manganese phosphate mineral, found in pegmatites and other felsic igneous rocks. It is a minor source of lithium.
Triplite
A rare iron and manganese phosphate mineral, found in pegmatites and other felsic igneous rocks. It has a distinctive reddish-brown color.
Triploidite
A manganese-iron phosphate mineral that forms dark brown to black, prismatic crystals or compact masses.
Tripuhyite
A rare iron antimonate mineral, found in oxidized antimony deposits. It has a distinctive orange-red color.
Triskelite
A rare lead copper arsenic hydroxide mineral, found in some oxidized copper deposits.
Tritomite-(Ce)
A rare cerium-rich nesosilicate mineral. It forms yellow to brown prismatic crystals in alkaline igneous rocks.
Troegerite
A hydrous uranium arsenate mineral, a secondary uranium ore.
Trogerite
A rare uranium arsenic hydrate mineral. It forms bright yellow to orange-yellow tabular or prismatic crystals.
Troilit
An iron sulfide mineral, found in some meteorites and thought to be a precursor to the formation of pyrite.
Troilite
An iron sulfide mineral with a bronze-yellow color and a metallic luster. It is a rare mineral found in some meteorites and certain igneous rocks.
Trolite
An iron sulfide mineral, the hexagonal polymorph of pyrrhotite.
Trolleite
A rare aluminum arsenic hydroxide mineral, found in oxidized arsenic-bearing deposits. It has a pale green to white color.
Trona
A common sodium carbonate bicarbonate hydrate mineral. It forms white to colorless monoclinic crystals and is an important source of sodium compounds.
Tsaregorodtsevite
A rare bismuth vanadate mineral, found in oxidized bismuth deposits. It has a bright yellow color.
Tsavorite
A rare green garnet variety, a valuable gemstone.
Tschermakite
A calcium magnesium iron aluminum silicate amphibole mineral.
Tschernichite
A hydrous copper uranium vanadate mineral, a secondary uranium ore.
Tsilaisite
A sodium manganese phosphate hydroxide mineral, found in pegmatites.
Tsumcorite
A rare lead iron arsenate mineral that typically forms bright yellow to greenish-yellow, tabular crystals.
Tsumebite
A rare lead copper phosphate sulfate hydroxide mineral. It forms blue to green prismatic or tabular crystals.
Tsumoite
A rare bismuth telluride mineral. It forms silver-white to lead-gray metallic hexagonal crystals.
Tucanite
A rare copper zinc vanadate hydroxide mineral. It forms green to bluish-green prismatic crystals.
Tucekite
A hydrous sodium uranyl vanadate mineral with a green or yellow-green color. It is a rare secondary uranium mineral found in uranium-rich deposits.
Tuebenite
A rare uranyl vanadate hydrate mineral. It forms yellow to green tabular or prismatic crystals.
Tugarinovite
A uranium oxide mineral with a black or dark gray color and a metallic luster. It is a rare primary uranium mineral found in some uranium deposits.
Tugtupite
A rare sodium beryllium aluminosilicate mineral, valued as a semi-precious gemstone due to its vivid red color and rarity.
Tulameenite
A platinum-iron alloy mineral, a source of platinum group metals.
Tulsite
A rare magnesium vanadate hydroxide mineral. It forms green to yellowish-green prismatic crystals.
Tumataite
A rare uranium vanadate mineral that forms bright yellow to greenish-yellow, prismatic crystals.
Tundrite-(Nd)
A rare neodymium calcium carbonate fluoride mineral. It forms pale yellow to white prismatic crystals.
Tunellite
A hydrous barium borate mineral with a white or colorless appearance and a vitreous luster. It is a rare mineral found in evaporite deposits and some metamorphic rocks.
Tungstibite
A tungsten oxide mineral, a source of tungsten.
Tungstite
A rare tungsten oxide hydroxide mineral. It forms yellow to greenish-yellow fibrous or scaly crystals.
Turkestanite
A rare calcium uranyl vanadate hydrate mineral. It forms yellow to green tabular crystals.
Turquoise
A rare hydrous copper aluminum phosphate mineral. It forms blue to blue-green massive to nodular aggregates and is a popular gemstone.
Tverrite
A rare copper uranium vanadate mineral that forms bright green, prismatic crystals.
Tyrolite
A rare calcium uranium vanadate hydrate mineral, found in the oxidized zones of uranium deposits. It has a bright green color.
Tyuyamunite
A rare uranium vanadate mineral that forms bright yellow to greenish-yellow, tabular crystals.
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