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Heterogenite-2H: Co+++O(OH)
Comments: Shiny black botryoidal heterogenite-2H. Location: Star of the Congo mine, Katanga, Congo. Scale: 6 cm. © John Attard
Heterogenite-3R: Co+++O(OH)
Comments: Black, botryodal heterogenite with green chrysocolla. Location: Star of the Congo Mine, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre). Scale: Specimen Size 11.6 x 9.9 x 5.6cm. © Rob Lavinsky
Heteromorphite: Pb7Sb8S19
Comments: Steel gray metallic acicular crystal mat of heteromorphite on clear calcite crystals. Location: Wolfsberg, Harz Mountains, Niedersachsen, Germany. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Heterosite: Fe+++PO4 Graftonite: (Fe++,Mn,Ca)3(PO4)2
Comments: Whitish graftonite intergrown with dark purple to brown heterosite. Location: Grafton, Grafton County, New Hampshire, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Heterosite: Fe+++PO4 Alluaudite: NaCaFe++(Mn,Fe++,Fe+++,Mg)2(PO4)3
Comments: Purple crystalline heterosite with yellow coatings of alluaudite. Location: Palermo Mine, North Groton, Grafton County, New Hampshire, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Heulandite-Ba: (Ba,Ca,K,Na,Sr)5Al9Si27O72·22(H2O)
Comments: BSE image of a heulandite crystal. Darker areas are enriched in Ca and Sr, while lighter areas are enriched in Ba. (Eur. J. Mineral, v17:143). Location: Northern Ravnås silver prospect, southern Vinoren, Flesberg community, Buskerud county, Norway. Scale: Scale bar is 0.1 mm. © Eur. J. Mineral
Heulandite-Ca: (Ca,Na)2-3Al3(Al,Si)2Si13O36·12(H2O) Mordenite: (Ca,Na2,K2)Al2Si10O24·7(H2O)
Comments: White, acicular crystals of mordenite in heulandite geode. Location: Rock Creek, Stevenson, Skamania County, Washington, USA. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Heulandite-Ca: (Ca,Na)2-3Al3(Al,Si)2Si13O36·12(H2O)
Comments: Crystals of heulandite with a green color due to chlorite inclusions. Location: Malagaon, India. Scale: 5 x 4.5 x 3 cm. © Isaias Casanova / IC Minerals
Comments: Pink heulandite crystals up to 15 mm in fibrous white mordenite matrix. Location: Rats Nest Claim, Challis, Custer Co., Idaho, USA. Scale: 6x6x4 cm. © John Betts - Fine Minerals
Heulandite-K: (K,Na,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O)
Comments: Coating of orange heulandite-K crystals on matix. Location: Albero Bassi, Vicenza, Veneto, Italy. Scale: See Image. © Rruff Database