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Mineral Index - G

• Glist
  syn. of Mica Group

• Globosite
  An ill-defined material, perhaps identical with Strengite. Existing analysis in doubt. Originally described from Arme Hilfe Mine, Ullersreuth, Hirschberg, Vogtland, Thuringia, Germany.

• Globoso
  syn. of Limonite

• Glockerite
  A hydrated basic sulphate of ferric iron. Ill-defined with analyzes that vary widely. May best be regarded as an impure, hardened gel-mass of indefinate composition. Results from the oxidation of iron sulphides.
  Fe³⁺₄(SO₄)(OH)₁₀·1-3H₂O ?

• Glossecollite
  syn. of Halloysite

• Glucin
  syn. of Glucine

• Glucine
  CaBe₄[(OH)₂|PO₄]₂ · 0.5H₂O

• Glucinite
  syn. of Herderite

• Glushinskite
  Monoclinic
  Mg[C₂O₄] · 2H₂O

• Gmelinite
  In 1997, Gmelinite has been split into Gmelinite-Ca, Gmelinite-Na and Gmelinite-K. Gmelinite was originally described from Montecchio Maggiore, Vicenza Province, Veneto, Italy and Little Deerpark Quarry, Glenarm, Co. Antrim, ...

• Gmelinite-Ca
  Hexagonal
  (Ca,Na₂)[Al₂Si₄O₁₂] · 6H₂O
• Gmelinite-K
  Hexagonal
  (K₂,Na₂,Ca)[Al₂Si₄O₁₂] · 6H₂O
• Gmelinite-Na
  Hexagonal
  (Na₂,Ca)[Al₂Si₄O₁₂] · 6H₂O
• Gobbinsite
  Orthorhombic
  Na₄(Ca,Mg,K₂)Al₆Si₁₀O₃₂·12H₂O
• Godlevskite
  Orthorhombic
  (Ni,Fe)₉S₈
• Godovikovite
  Hexagonal
  NH₄(Al,Fe)(SO₄)₂
• Goedkenite
  Monoclinic
  (Sr,Ca)₂Al[OH|(PO₄)₂]

• Goergyite
  syn. of Görgeyite

• Goethiet
  syn. of Goethite

• Goethite
  Orthorhombic
  α-Fe³⁺O(OH)

• Goethyt
  syn. of Goethite

• Goetite
  syn. of Goethite

• Goetzenite
  syn. of Götzenite

• Gold
  Isometric
  Au

• Goldamalgam
  
  Isometric
  (Au,Ag)Hg

• Gold Amalgam
  syn. of Goldamalgam

• Gold Argentide
  syn. of Electrum

• Golden Beryl
  syn. of Heliodor

• Golden Healer Quartz
  A trade name for an iron-stained Quartz from Arkansas. Most of the clear quartz found in Arkansas is iron-stained when found, and is treated with chemicals to remove the staining. This is a novel way to market the untreated quartz.

• Golden Topaz
  syn. of Citrine

• Goldfieldite
  Cu₁₂(Te,Sb,As)₄S₁₃

• Goldglätte
  syn. of Litharge

• Gold Group
  syn. of Copper Group

• Goldichite
  Monoclinic
  KFe(SO₄)₂·4H₂O
• Goldmanite
  Isometric
  Ca₃(V³⁺,Al,Fe³⁺)₂[SiO₄]₃

• Gold Opal
  var. of Opal

• Gold-Palladium Series
  a series between Gold and Palladium

• Goldquarryite
  Triclinic
  CuCd₂Al₃(PO₄)₄F₂(H₂O)₁₀(H₂O,F)₂

• Goldschmidtine
  syn. of Stephanite

• Goldschmidtite
  syn. of Sylvanite

• Goldschwefel
  syn. of Kermesite

• Gold-Silver Series
  a series between Gold and Silver
  Isometric

• Goldstone
  An artificial glass made by Monks in Northern Italy (

  see this article
  ). This glass contains flecks of copper giving it its appearance.

• Goldtellur
  syn. of Sylvanite

• Goldtopas
  syn. of Citrine

• Golyshevite
  Trigonal
  [Na₁₀Ca₃]Ca₆Zr₃Fe₂SiNb[(OH)₃|CO₃|(Si₃O₉)₂|(Si₉O₂₇)₂] · H₂O

• Gongylite
  A pinitic pseudomorph - an aluminosilicate Fe, Mg and alkalis.

• Gonnardite
  Orthorhombic
  Na₂Ca[Al₂Si₃O₁₀]₂ · 7H₂O

• Gonsogolite
  syn. of Pectolite

• Gonyerite
  (Mn,Mg)₅Fe(Si₃Fe)O₁₀(OH)₈

• Goodletite
  mixture of Fuchsite, Margarite, Ruby

• Goongarrite
  Shown to be a mixture of Cosalite and Galena. Originally described from Lake Goongarrie, Comet Vale Township, Western Australia, Australia.

• Gooseberry-Garnet
  syn. of Grossular

• Goosecreekite
  Monoclinic
  Ca[Al₂Si₆O₁₆] · 5H₂O

• Goose-dung ore
  syn. of Ganomatite

• Gorceixite
  Monoclinic
  BaAl₃[(OH)₅|(PO₄)₂] · H₂O
• Gordaite
  Trigonal
  NaZn₄[(OH)₆|SO₄|Cl] · 6H₂O

• Gordaite (of Frenzel)
  syn. of Ferrinatrite

• Gordonite
  Triclinic
  MgAl₂[OH|PO₄]₂ · 8H₂O
• Görgeyite
  Monoclinic
  K₂Ca₅(SO₄)₆·H₂O

• Gorlandite
  syn. of Mimetite

• Gormanite
  Triclinic
  (Fe²⁺,Mg)₃(Al,Fe³⁺)₄[(OH)₃|(PO₄)₂]₂ · 2H₂O

• Gormanite-Souzalite Series
  a series between Gormanite and Souzalite
  Triclinic

• Gortdrumite
  Orthorhombic
  (Cu,Fe)₆Hg₂S₅

• Goshenite
  var. of Beryl

• Goslarite
  Orthorhombic
  ZnSO₄·7H₂O

• Gosseixite
  syn. of Gorceixite

• Gothardite
  syn. of Dufrénoysite

• Götheite
  syn. of Goethite

• Göthite
  syn. of Goethite

• Göthit (of Lenz)
  syn. of Lepidocrocite

• Götiitti
  syn. of Goethite

• Gottardiite
  Orthorhombic
  Na₃Mg₃Ca₅Al₁₉Si₁₁₇O₂₇₂·93H₂O

• Gotthardite
  syn. of Dufrénoysite

• Gotthardtite
  syn. of Dufrénoysite