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Mineral Index - T

• Tourmaline Group
  syn. of Tourmaline

• Tourmalinite
  syn. of Tourmaline

• Towanite
  syn. of Chalcopyrite

• Toyohaite
  Tetragonal
  Ag₂FeSn₃S₈
• Trabzonite
  Monoclinic
  Ca₄Si₃O₁₀·2H₂O

• Trainite
  syn. of Vashegyite

• Tranquillityite
  Hexagonal
  (Fe²⁺,Ca)₈(Zr,Y)₂Ti₃[O₄|SiO₄]₃

• Transvaalite (of McGhie and Clark)
  syn. of Heterogenite

• Transvaal Jade
  syn. of Hibschite

• Traskite
  Hexagonal
  Ba₂₁Ca(Fe²⁺,Mn,Ti)₄(Ti,Fe,Mg)₁₂(Si₁₂O₃₆)(Si₂O₇)₆(O,OH)₃₀Cl₆·14H₂O
• Trattnerite
  Hexagonal
  ([],K)(Mg, Fe²⁺)₃Fe³⁺₂[Si₁₂O₃₀]

• Traubenblei
  syn. of Mimetite

• Traversellite
  var. of Diopside
  CaMgSi₂O₆

• Travertine
  var. of Calcite
  CaCO₃

• Treanorite
  syn. of Allanite

• Treasurite
  Monoclinic
  Ag₇Pb₆Bi₁₅S₃₂
• Trechmannite
  Trigonal
  AgAsS₂

• Trechmannite-α
  Occurs with sartorite in the Binntal. Needs investigation.

• Trechmannite (of Koechlin)
  Undescribed.

• Trechmannite (of Solly)
  syn. of Trechmannite

• Tree Agate
  syn. of Moss Agate

• Trembathite
  Trigonal
  (Mg,Fe)₃B₇O₁₃Cl

• Tremoliet
  syn. of Tremolite

• Tremoliitti
  syn. of Tremolite

• Tremolite
  Monoclinic
  ☐[Ca₂][Mg₅][(OH)₂|Si₈O₂₂]

• Trémolite
  syn. of Tremolite

• Tremolith
  syn. of Tremolite

• Tremolitic hornblende
  syn. of Magnesiohornblende

• Trevorite
  Isometric
  Ni²⁺Fe³⁺₂O₄
• Triangulite
  Triclinic
  Al₃(UO₂)₄(PO₄)₄(OH)₅·5H₂O

• Trichalcite
  syn. of Tyrolite

• Trichopyrite
  syn. of Millerite

• Triclinic Roscherite
  syn. of Footemineite

• Tridymiet
  syn. of Tridymite

• Tridymite
  Triclinic
  SiO₂

• Tridymite-α
  syn. of Tridymite

• Tridymite-alpha
  syn. of Tridymite

• Trieuite
  syn. of Heterogenite

• Trigonite
  Monoclinic
  Pb₃Mn²⁺[HAsO₃|(AsO₃)₂]

• Trihydrocalcite
  syn. of Ikaite, Monohydrocalcite

• Trikalsilite
  Hexagonal
  (Na,K)[AlSiO₄]
• Trilithionite
  Monoclinic
  K(Li,Al)₃[(F,OH)₂|AlSi₃O₁₀]

• Trilithionite (Mn)
  syn. of Manganoan Trilithionite

• Trillium
  var. of Apatite

• Trilliumite
  syn. of Trillium

• Trimerite
  Monoclinic
  CaMn²⁺₂Be₃[SiO₄]₃

• Trimonite
  syn. of Scheelite

• Trimontite
  syn. of Scheelite

• Trimounsite-(Y)
  Monoclinic
  Y₂Ti₂[O₅|SiO₄]

• Trimounsit-(Y)
  syn. of Trimounsite-(Y)

• Trinitite
  An unofficial 'mineral' name for an artificial glass formed from the heat of the detonation of the first nuclear bomb at Trinity, New Mexico. A man-made artifact, not a mineral.

• Trinityite
  syn. of Trinitite

• Trinkerite
  An ill-defined resin, resembling amber

• Tripelglanz
  syn. of Bournonite

• Tripe Stone
  syn. of Bowel Stone

• Triphane
  syn. of Spodumene

• Triphylin
  syn. of Triphylite

• Triphylite
  Orthorhombic
  LiFe²⁺[PO₄]

• Triphylite Group
  group name
  AB(XO₄)

• Triphylite-Lithiophilite Series
  syn. of Lithiophilite-Triphylite Series

• Triplite
  Monoclinic
  (Mn²⁺,Fe²⁺)₂[(F,OH)|PO₄]

• Triplite-Zwieselite Series
  a series between Triplite and Zwieselite
  Monoclinic
  (Mn²,Fe²,Mg,Ca)₂(PO₄)(F,OH) - (Fe²,Mn²)₂(PO₄)F

• Triploclase
  syn. of Thomsonite-Ca

• Triploidite
  Monoclinic
  (Mn²⁺,Fe²⁺)₂[OH|PO₄]

• Triploidite-Wolfeite Series
  a series between Triploidite and Wolfeite
  Monoclinic

• Triploklas
  syn. of Thomsonite-Ca

• Tripoclase
  syn. of Thomsonite-Ca

• Tripolite
  syn. of Diatomite

• Trippkeite
  Tetragonal
  Cu[As₂O₄]

• Trippkeite Group
  group name

• Tripuhyite
  Tetragonal
  Fe³⁺Sb⁵⁺O₄
• Tristramite
  Hexagonal
  (Ca,U,Fe)(PO₄,SO₄)·2H₂O

• Tritomit-(Ce)
  syn. of Tritomite-(Ce)

• Tritomite
  syn. of Tritomite-(Y)

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