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Hauerite: MnS2 Rambergite: MnS
Comments: Small black octahedral crystals of hauerite with small brown crystals of rambergite. Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Picture size 0.8 mm. © Thomas Witzke / Abraxas-Verlag
Hausmannite: Mn++Mn+++2O4 Ephesite: NaLiAl2(Al2Si2)O10(OH)2
Comments: Flesh-colored ephesite associated with dark brownish black hausmannite. Location: Gloucester mine. Postmasburg, Cape province. S. Africa. Scale: 5.5 x 5 cm. © Fabre Minerals
Hausmannite: Mn++Mn+++2O4
Comments: Black hausmannite crystals with minor brucite. Location: Wessels Mine, Kalahari, South Africa. Scale: 6.5 x 6 cm. © John Veevaert
Hausmannite: Mn++Mn+++2O4 Kombatite: Pb14(VO4)2O9Cl4
Comments: Yellow kombatite crystals in black hausmannite. Location: Kombat Mine, Otavi, Namibia. Scale: Picture size 4 mm. © Thomas Witzke / Abraxas-Verlag
Hausmannite: Mn++Mn+++2O4 Fredrikssonite: Mg2(Mn+++,Fe+++)O2(BO3)
Comments: Red-brown elongated crystalline fredrikssonite in calcite with granular hausmannite. Location: Langban, Varmland, Sweden. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Hausmannite: Mn++Mn+++2O4 Filipstadite: (Mn++,Mg)4Sb+++++Fe+++O8
Comments: Dark minute grains of filipstadtite in hausmannite (slabbed specimen). Location: Jacobsberg Mine, near Nordmark, Filipstad, Varmland, Sweden. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Hauyne: (Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2
Comments: Grains of deep blue hauyne crystals in matrix. Location: Niedermendig, Eifel, Germany. Scale: Picture size 5 mm. © John Veevaert
Hawleyite: CdS
Comments: Shale coated with brilliant yellow hawleyite. Location: Mco. la Plane de Bosc, France. Scale: 4 x 3.5 cm. © John Veevaert
Hawthorneite: Ba[Ti3Cr4Fe4Mg]O19
Comments: Replacement-textured magnesian chromian spinel (dark gray, CHR) infiltrated by hawthorneite (H, medium gray). B&W polished section, PPL with oil immersion. (AmMin, v74:668). Location: Metasomatized, harzburgitic xenolith from a diamondiferous kimberlite pipe in Kimberley, South Africa. Scale: See Image. © American Mineralogist
Haxonite: (Fe,Ni)23C6
Comments: Dark gray metallic haxonite fragment embedded in epoxy. Location: Egvekinot meteorite, Chukot Province, Russia. Scale: See Image. © Rruff Database
Haycockite: Cu4Fe5S8 Mooihoekite: Cu9Fe9S16
Comments: B&W polished section image of mooihoekite-haycockite intergrowth showing tarnished mooihoekite (mh) and haycockite (hc). The small whitest lamellar grains are mackinawite. Location: Hortonolite dunite (replacement,) pegmatite, Mooihoek Farm, Lydenburg District, Transvaal, South Africa. (AmMin, v57:689). Scale: See Image. © American Mineralogist
Haydeeite: Cu3Mg(OH)6Cl2
Comments: Blue crystalline druze of haydeeite on matrix. Location: Haydee Mine, Iquiqua, Paparaca, Chile. Scale: Specimen Size 2 1/2 in x 2 in. © Chris Wright / Wrights Rock Shop
Haynesite: (UO2)3(SeO3)2(OH)2·5(H2O)
Comments: Yellow tufts of haynesite. Location: Repete mine, San Juan County, Utah, USA. Scale: Crystal size 0.5 mm. © Tom Loomis / Dakota Matrix
Comments: Bright yellow sunburst clusters of haynesite on a fracture surface.. Location: Repete Mine, San Juan Co., Utah, USA. Scale: Picture size 0.5 cm. © Paul M. Schumacher
Heazlewoodite: Ni3S2
Comments: Small crystal aggregate of heazlewoodite. Location: Jeffrey Mine, Asbestos, Quebec, Canada. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Hechtsbergite: Bi2O(OH)(VO4)
Comments: Light brownish crystals of hechtsbergite in matrix. Location: Hechtsberg Quarry, Hausach, Kinzig Valley, Black Forest, Baden-Württemberg, Germany. Scale: Picture size 1.3 mm. © Thomas Witzke / Abraxas-Verlag
Hectorfloresite: Na9(IO3)(SO4)4
Comments: Prismatic twinned crystal of hectorfloresite. Location: Pampa Rica, Antofagasta, Chile. Scale: Picture size 2 mm. © Thomas Witzke / Abraxas-Verlag
Hectorite: Na0,3(Mg,Li)3Si4O10(OH)2
Comments: Pure white paper-like matted masses of hectorite. Location: near Hector, San Bernardino County, California, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Hedenbergite: CaFe++Si2O6
Comments: Thick, bluish gray blocky prisms of hedenbergite on matrix. Location: Harstig mine, Pajsberg, Varmland, Sweden. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Hedenbergite: CaFe++Si2O6 Ilvaite: CaFe++2Fe+++Si2O7O(OH)
Comments: Doubly terminated, black ilvaite on crystals of greenish gray hedenbergite with minor galena. Location: First Sovietsky mine, Dalnjegorsk, Russia. Scale: 4 x 2.8 x 1.8 cm. © Fabre Minerals