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Jarlite: Na(Sr,Na,[ ])7(Mg,[ ])Al6F32(OH,H2O)2
Comments: Tan radial botryoidal waxy masses of jarlite in matrix. Location: Ivigtut, Greenland. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Jarosewichite: Mn++3Mn+++(AsO4)(OH)6 Flinkite: Mn++2Mn+++(AsO4)(OH)4
Comments: Radial divergent spray of thick prismatic jarosewichite crystals with bladed flinkite crystals. (AmMin, v67:1043). Location: Franklin mine, Franklin, SussexC ounty, New Jersey, USA. Scale: Scale Bar 100 µm. © American Mineralogist
Jarosite: KFe+++3(SO4)2(OH)6 Fairbankite: PbTe++++O3
Comments: Colorless to white crystals of fairbankite with orangish brown jarosite. Location: Tombstone, Tombstone District, Cochise Co., Arizona, USA. Scale: Picture size 1.5 mm. © Thomas Witzke / Abraxas-Verlag
Jarosite: KFe+++3(SO4)2(OH)6
Comments: Deep brown lustrous crystals of Jarosite to 2 mm. Location: Soureza, Attika, Greece. Scale: 2.8 x 1.6 cm. © John Veevaert
Jarosite: KFe+++3(SO4)2(OH)6 Winstanleyite: TiTe++++3O8
Comments: Small, yellow octahedral crystal of winstanleyite on brownish red jarosite. Location: Tombstone, Tombstone District, Cochise Co., Arizona, USA. Scale: Picture size 0.9 mm. © Thomas Witzke / Abraxas-Verlag
Jarosite: KFe+++3(SO4)2(OH)6 Alunogen: Al2(SO4)3·17(H2O)
Comments: Colorless to white, tabular crystals alunogen on reddish jarosite. Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Picture size 5 mm. © Thomas Witzke / Abraxas-Verlag
Jaskolskiite: Pb2+xCux(Sb,Bi)2-xS5, x=0.2
Comments: Silvery gray metallic granular jaskolskiite (mounted on paper). Location: Vena, Bergslagen, Orebro, Sweden. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Jasmundite: Ca11(SiO4)4O2S Cuspidine: Ca4Si2O7(F,OH)2
Comments: Tan-brownish crystals of jasmundite and dark green cuspidine with gehlenite and spinel in matrix. Location: Bellerberg, Eifel, Germany. Scale: Not Given. © Diederik Visser
Jeanbandyite: (Fe+++,Mn++)Sn++++(OH)6
Comments: Yellowish brown translucent microcrystal of jeanbandyite on mineral encrusted fluorite. Location: Mount Pleasant Tin Mine, New Brunswick, Canada. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Jennite: Ca9Si6O18(OH)6·8H2O
Comments: Bright white fibrous jennite veinlet in rock. Location: Crestmore Quarry, Riverside County, California, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species