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Mineral Index - M

• Metaschoepite
  Orthorhombic
  UO₃ · 1-2H₂O
• Metasideronatrite
  Orthorhombic
  Na₄Fe₂(SO₄)₄(OH)₂·2H₂O

• Metasimpsonite
  syn. of Microlite

• Metastibnite
  Amorphous
  Sb₂S₃

• Metastrengite
  syn. of Phosphosiderite

• Metastudtite
  Orthorhombic
  UO₄ · 2H₂O
• Metaswitzerite
  Monoclinic
  Mn₃(PO₄)₂·4H₂O

• Metathenardite
  A name applied to a high-temperature, possible hexagonal polymorph of Na2SO4. Needs further study and formal naming (?). Originally reported from Mt. Pelée, Martinique, Lesser Antilles, French West Indies.
  Na₂SO₄

• Metatorbernite
  Tetragonal
  Cu(UO₂)₂[PO₄]₂ · 8H₂O

• Metatorbernite Group
  syn. of Meta-autunite Group

• Meta-torbernite I
  syn. of Metatorbernite

• Metatriplite
  var. of Triplite

• Metatyuyamunite
  Orthorhombic
  Ca(UO₂)₂[VO₄]₂ · 3-5H₂O
• Metauranocircite
  Monoclinic
  Ba(UO₂)₂[PO₄]₂ · 7H₂O
• Meta-uranopilite
  (UO₂)₆[(OH)₁₀|SO₄] · 5H₂O
• Metauranospinite
  Tetragonal
  Ca(UO₂)₂[AsO₄]₂ · 8H₂O
• Metavandendriesscheite
  Orthorhombic
  PbU₇O₂₂·nH₂O n < 12
• Metavanmeersscheite
  Orthorhombic
  U⁴⁺(UO₂)₃[(OH)₂|PO₄]₂ · 2H₂O
• Metavanuralite
  Triclinic
  Al(UO₂)₂[OH|(VO₄)₂] · 8H₂O
• Metavariscite
  Monoclinic
  AlPO₄·2H₂O

• Metavariscite Group
  group name

• Metavauxite
  Monoclinic
  Fe²⁺Al₂[OH|PO₄]₂ · 8H₂O
• Metavivianite
  Triclinic
  Fe²⁺_3-xFe³⁺_x(PO₄)₂(OH)x·(8-x)H₂O

• Metavoltaite
  syn. of Metavoltine

• Metavoltin
  syn. of Metavoltine

• Metavoltine
  Trigonal
  Na₆K₂FeFe₆(SO₄)₁₂O₂·18H₂O
• Metazellerite
  Orthorhombic
  Ca(UO₂)[CO₃]₂ · 3H₂O
• Metazeunerite
  Tetragonal
  Cu(UO₂)₂[AsO₄]₂ · 8H₂O

• Meta-Zircon (of Leitz)
  syn. of Zircon

• Meteoric Iron
  mixture of Kamacite, Taenite

• Meteorin
  syn. of Taenite

• Meteorkies
  syn. of Troilite

• Mētzcuitlatl
  syn. of Mica Group

• Meullerite
  syn. of Schertelite

• Meurigita-K
  syn. of Meurigite-K

• Meurigite
  syn. of Meurigite-K, Meurigite-Na

• Meurigite-K
  Monoclinic
  [K(H₂O)_2.5][Fe³⁺₈(PO₄)₆(OH)₇(H₂O)₄]
• Meurigite-Na
  Monoclinic
  [Na(H₂O)_2.5][Fe³⁺₈(PO₄)₆(OH)₇(H₂O)₄]

• Meurigit-K
  syn. of Meurigite-K

• Mexican Agate
  syn. of Limestone Onyx

• Mexican Diamond
  syn. of Quartz

• Mexican Fire Opal
  var. of Opal

• Mexican Jade
  var. of Calcite

• Mexican Lace Agate
  var. of Agate

• Mexican Onyx
  syn. of Limestone Onyx

• Mexikanischer Achat
  syn. of Limestone Onyx

• Mexikanischer Onyx
  syn. of Limestone Onyx

• Meyamacite
  syn. of Meymacite

• Meyerhofferite
  Triclinic
  Ca₂(H₃B₃O₇)₂ · 4H₂O

• Meyersite
  An inadequately described material containing substantial AlPO4 (66.33%), minor FePO4 (2.52%) and H2O (26.10%). Probably a Ferrian variscite. Occurred as agate-like, meta-colloidal masses in cavities in lava.

• Meymacite
  Amorphous
  WO₃·2H₂O

• Meymacite (of Pierrot and Van Tassel)
  syn. of Meymacite

• Meyonite
  syn. of Meionite

• Mézoline
  syn. of Thomsonite-Ca

• Mg-Al Biotite
  syn. of Ferroan Phlogopite

• Mg-Al Celadonite
  syn. of Aluminoceladonite

• Mg-bearing Boothite
  var. of Boothite
  (Cu,Mg)SO₄·7H₂O

• Mg-bearing Melanterite
  var. of Melanterite
  (Fe,Mg)SO₄·7H₂O

• Mg-bearing Xonotlite
  var. of Xonotlite
  (Ca,Mg)₆Si₆O₁₇(OH)₂

• Mg-Berzeliite
  syn. of Berzeliite

• Mg-Fe-Mn-Li Ortho-Amphibole Subgroup
  A subgroup of the Amphibole Group. Members of this group are: Anthophyllite, Ferro-anthophyllite, Ferrogedrite, Ferrohomquistite, Gedrite, Holmquistite, Protoferro-anthophyllite, ...

• Mg-Fillowite
  var. of Fillowite
  Na₂Ca(Mn²⁺₄Mg₂Fe²⁺)₇[PO₄]₆

• Mg-Mn-Fe-Li Clino-Amphibole Subgroup
  A subgroup of the Amphibole Group. This subgroup includes: Clinoferroholmquistite, Clinoholmquistite, Cummingtonite, Grunerite, Manganocummingtonite, Manganogrunerite, and ...

• Mg-rich Calcite
  var. of Calcite
  (Ca,Mg)CO₃

• Mg-rich Dolomite
  var. of Dolomite
  (Ca,Mg)Mg(CO₃)₂

• Mg-rich Erythrite
  var. of Erythrite
  (Co,Mg)₃(AsO₄)₂·8H₂O

• Mg-rich Siderite
  var. of Siderite
  (Fe,Mg)CO₃

• Mgriite
  Cu₃AsSe₃

• Mg-Titanomagnetite
  var. of Magnetite

• Mg(T) Mica
  var. of Biotite

• Mg-Turmalin
  syn. of Dravite

• Mg-Ursilite
  syn. of Ursilite

• Mg-Werdingite
  syn. of Werdingite

• Miargyrite
  Monoclinic
  AgSbS₂
• Miassite
  Isometric
  Rh₁₇S₁₅