page_title: List of minerals approved by IMA (G)
section_title: Ga – Ge
hierarchical_section_title: List of minerals approved by IMA (G) / G / Ga – Ge
caption_attribution_description: English: Geikielite Locality: Maxwell quarry, Chelsea, Les Collines-de-l'Outaouais RCM, Outaouais, Québec, Canada (Locality at mindat.org) Size: 7.5 x 6 x 4 cm. Geikielite is a rare magnesium titanium oxide, found usually in microcrystals or masses. It is the magnesium analogue of Ilmenite. Here we have a huge mass of geikielite about 3 inches in size with distinct big crystals over 1 cm in size embedded within it. It shows metallic lustre and some sharp twinning. This has been confirmed via communications with several collectors of rarities and the Royal Ontario Museum. Ex. Philadelphia Academy of Sciences Collection. Deutsch: Geikielith Fundort: Maxwell quarry, Chelsea, Les Collines-de-l'Outaouais RCM, Outaouais, Québec, Kanada (Fundort bei mindat.org) Größe: 7.5 x 6 x 4 cm.
context_page_description: This list includes those recognised minerals beginning with the letter G. The International Mineralogical Association is the international group that recognises new minerals and new mineral names, however minerals discovered before 1959 did not go through the official naming procedure, although some minerals published previously have been either confirmed or discredited since that date. This list contains a mixture of mineral names that have been approved since 1959 and those mineral names believed to still refer to valid mineral species.
  The list is divided into groups:
  Introduction •
  A • B • C • D • E • F • G • H • I • J • K • L • M • N • O • P–Q • R • S • T • U–V • W–X • Y–Z
  The data was exported from mindat.org on 29 April 2005; updated up to 'IMA2019'.
  The minerals are sorted by name, followed by the structural group or chemical class, the year of publication, the IMA approval and the Nickel–Strunz code. The first link is to mindat.org, the second link is to webmineral.com, and the third is to the Handbook of Mineralogy.
  Abbreviations:
  ᴰ – discredited.
  Q – questionable/ doubtful.
context_section_description: Gabrielite (IMA2002-053) 2.HD.60    
  (IUPAC: dithallium silver dicopper heptasulfur triarsenide)
  Gabrielsonite (IMA2017-G, IMA1966-011) 8.BH.35    
  (IUPAC: lead iron(III) hydro arsenite)
  Gadolinite 9.AJ.20 
  (IUPAC: diREE iron(II) diberyllium dioxy disilicate)
  Gadolinite-(Ce) (IMA1987 s.p., 1978) 9.AJ.20   
  Gadolinite-(Nd) (IMA2016-013) 9.AJ.20  [no] [no]
  Gadolinite-(Y) (IMA1987 s.p., 1802) 9.AJ.20   
  Gagarinite (gagarinite) 3.AB.35 
  (IUPAC: sodium calcium REE hexafluoride)
  Gagarinite-(Ce) (IMA2010-C, IMA1993-038 Rd) 3.AB.35   
  Gagarinite-(Y) (IMA1967 s.p., 1961) 3.AB.35   
  Gageite (Y: 1910) 9.DH.35   
  Gahnite (spinel, spinel: 1807) 4.BB.05    
  (IUPAC: zinc dialuminium tetraoxide)
  Gaidonnayite (gaidonnayite: IMA1973-008) 9.DM.15    
  (IUPAC: disodium zirconium trisilicate nonaoxy hydrate)
  Gainesite (IMA1978-020) 8.CA.20   
  Gaitite (fairfieldite: IMA1978-047) 8.CG.05    
  (IUPAC: dicalcium zinc diarsenate dihydrate)
  Gajardoite (IMA2015-040) 4.0  [no] [no]
  Galaxite (spinel, spinel: 1932) 4.BB.05    
  (IUPAC: manganese(II) dialuminium tetraoxide)
  Galeite (IMA1967 s.p., 1963) 7.BD.10    
  (IUPAC: pentadecasodium chloro tetrafluoro pentasulfate)
  Galena (galena, rocksalt: Pliny the Elder) 2.CD.10    
  (IUPAC: lead sulfide)
  Galenobismutite (kobellite: 1878) 2.JC.25e    
  (IUPAC: lead dibismuth tetrasulfide)
  Galgenbergite-(Ce) (IMA1997-036) 5.CC.40    
  (IUPAC: calcium dicerium tetracarbonate monohydrate)
  Galileiite (fillowite: IMA1996-028) 8.AC.50    
  (IUPAC: sodium tetrairon(II) triphosphate)
  Galkhaite (tennantite: IMA1971-029) 2.GB.20    
  (IUPAC: (pentamercury copper) caesium dodecasulfide tetrarsenide)
  Galliskiite (IMA2009-038) 8.0  [no] [no] 
  (IUPAC: tetracalcium dialuminium octafluoro diphosphate pentahydrate)
  Gallite (chalcopyrite: 1958) 2.CB.10a    
  (IUPAC: copper gallium disulfide)
  Gallobeudantite (beudantite, alunite: IMA1994-021) 8.BL.05    
  (IUPAC: lead trigallium hexahydro arsenate sulfate)
  Galloplumbogummite (alunite, crandallite: IMA2010-088) 8.B?.  [no] [no]
  Galuskinite (IMA2010-075) 9.0  [no]  
  (IUPAC: heptacalcium trisilicate carbonate)
  Gamagarite (brackebuschite: 1943) 8.BG.05    
  (IUPAC: dibarium iron(III) hydro divanadate)
  Gananite (IMA1983-006) 3.AC.20    
  (IUPAC: bismuth trifluoride)
  Ganomalite (ganomalite: 1876) 9.BG.25    
  (IUPAC: nonalead hexacalcium tetra(heptaoxydisilicate) oxy(tetraoxysilicate))
  Ganophyllite (Y: 1890) 9.EG.30   
  Ganterite (mica: IMA2000-033) 9.EC.15   
  Gaotaiite (pyrite: IMA1993-017) 2.EB.05a    
  (IUPAC: triiridium octatelluride)
  Garavellite (berthierite: IMA1978-018) 2.HA.20    
  (IUPAC: iron tetrasulfa antimonide bismuthide)
  Garmite (mica: IMA2017-008) 9.E?.  [no] [no] 
  (IUPAC: caesium lithium dimagnesium (decaoxytetrasilicate) difluoride)
  Garrelsite (Y: 1955) 9.AJ.15   
  Garronite (zeolitic tectosilicate) 9.GC.05
  Garronite-Ca (IMA1997 s.p., 1962) 9.GC.05   
  Garronite-Na (IMA2015-15) 9.GC.05  [no] 
  Gartrellite (tsumcorite: IMA1988-039 Rd) 8.CG.20    
  (IUPAC: lead copper iron(III) hydro diarsenate monohydrate)
  Garutiite (alloy: IMA2008-055) 1.AG.05  [no]  
  (IUPAC: (nickel,iron,iridium) alloy)
  Garyansellite (reddingite: IMA1981-019) 8.CC.05    
  (IUPAC: dimagnesium iron(III) hydro diphosphate dihydrate)
  Gasparite (monazite) 8.AD.50 
  (IUPAC: REE arsenate)
  Gasparite-(Ce) (IMA1986-031) 8.AD.50   
  Gasparite-(La) (IMA2018-079) 8.AD.50  [no] [no]
  Gaspéite (calcite: IMA1965-029) 5.AB.05    
  (IUPAC: nickel carbonate)
  Gatedalite (braunite: IMA2013-091) 9.A?.  [no] [no] 
  (IUPAC: zirconium dimanganese(II) tetramanganese(III) octaoxy tetraoxysilicate)
  Gatehouseite (arsenoclasite: IMA1992-016) 8.BD.10    
  (IUPAC: pentamanganese tetrahydro diphosphate)
  Gatelite-(Ce) (gatelite: IMA2001-050) 9.BG.50   [no]
  Gatewayite (polyoxometalate: IMA2014-096) 4.0  [no] [no]
  Gatumbaite (IMA1976-019) 8.DJ.10    
  (IUPAC: calcium dialuminium dihydro diphosphate monohydrate)
  Gaudefroyite (IMA1964-006) 6.AB.60    
  (IUPAC: tetracalcium trimanganese(III) trioxo triborate carbonate)
  Gaultite (zeolitic tectosilicate: IMA1992-040) 9.GF.20   [no]
  Gauthierite (IMA2016-004) 4.0  [no] [no] 
  (IUPAC: potassium lead [heptauranyl heptahydro
caption: Geikielite with distinct big crystals
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