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Hydroglauberite: Na4Ca(SO4)3·2(H2O) Glauberite: Na2Ca(SO4)2
Comments: Putty-colored chalky hydroglauberite on glauberite crystals. Location: Camp Verde, Yavapai County, Arizona, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Hydrohalite: NaCl·2(H2O)
Comments: Synthetic crystals of hydrohalite in brine at -15 deg C. Location: Laboratory-grown sea ice used to investigate the optical properties of cold sea ice. Scale: See Image. © Bonnie Light / Applied Physics Laboratory U of Washington
Hydrohetaerolite: Zn2Mn+++4O8·(H2O)
Comments: Dull brown patches of hydrohetaerolite in franklinite. Location: Franklin, Sussex County, New Jersey, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Hydrohonessite: Ni6Fe+++2(SO4)(OH)16·7(H2O)
Comments: Yellow to brown crusts of hydrohonessite on matrix. Location: Otter Shoot, Kambalda, Western Australia, Australia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Hydromagnesite: Mg5(CO3)4(OH)2·4(H2O)
Comments: White, blocky crystals of hydromagnesite. Location: Lobming, Styria, Austria. Scale: Picture size 5 mm. © Thomas Witzke / Abraxas-Verlag
Hydromagnesite: Mg5(CO3)4(OH)2·4(H2O) Pokrovskite: Mg2(CO3)(OH)2·0.5(H2O)
Comments: Tan spherical pokrovskite on serpentinite rock with white hydromagnesite sprays. Location: KCA Quarry, San Benito County, California, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Hydroniumjarosite: (H3O)Fe+++3(SO4)2(OH)6
Comments: Yellow, earthy hydronium-jarosite. Location: Reiche Zeche Mine, Himmelfahrt Mine, Freiberg, Freiberg District, Erzgebirge, Saxony, Germany. Scale: Specimen size 3.3 cm. © Thomas Witzke / Abraxas-Verlag
Hydroscarbroite: Al14(CO3)3(OH)36·n(H2O) Scarbroite: Al5(CO3)(OH)13·5(H2O)
Comments: White to tan nodular hydroscarbroite intermixed with scarbroite in sandstone. Location: Weston Favell, Northamptonshire, England. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Hydrotalcite: Mg6Al2(CO3)(OH)16·4(H2O)
Comments: Pearly white foliated masses of hydrotalcite on serpentinite rock. Location: Snarum, Vikersund, Buskerud, Norway. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Hydrotungstite: H2WO4·(H2O)
Comments: Bright yellow crystalline crusts of hydrotungstite on matrix. Location: Colquiri Mine, Colquiri, La Paz, Bolivia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species