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Haxonite: (Fe,Ni)23C6
Comments: Dark gray metallic haxonite fragment embedded in epoxy. Location: Egvekinot meteorite, Chukot Province, Russia. Scale: See Image. © Rruff Database
Hellandite-(Ce): (Ca3REE)4Ce2Al[ ]2[Si4 B4O22](OH)2
Comments: Pale yellow platy hellandite-(Ce) crystals in a vug. Location: Campo Pefella, near Capranica, Viterbo, Latium, Italy. Scale: See Image. © Rruff Database
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
Heulandite-Na: (Na,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O)
Comments: Orange tabular crystals of heulandite-Na lining a vug. Location: Warm Spring Creek, Challis, Custer County, Idaho, USA. Scale: See Image. © Rruff Database
Holdawayite: Mn++6(CO3)2(OH)7(Cl,OH)
Comments: Compact platy crystalline holdawayite. Colorless when thin, but brown when thick. Location: Kombat, Namibia. Scale: See Image. © Rruff Database
Holmquistite: [ ](Li2Mg3Al2)Si8O22(OH)2 Magnesioholmquistite: Li2(Mg,Fe++)3Al2Si8O22(OH)2
Comments: Dark blue thin bladed crystals of holmquistite (magnesioholmquistite) in amphibolite. Location: Uto, Sodermanland, Sweden. Scale: See Image. © Rruff Database
Hydroxylbastnasite-(Ce): Ce(CO3)(OH)
Comments: Orangy brown hexagonal tablet of hydroxylbastnasite-(Ce). Location: Trimouns, Luzenac, France. Scale: See Image. © Rruff Database
Hydroxylclinohumite: Mg9(SiO4)4(OH,F)2
Comments: Deep red tabular hydroxylclinohumite crystal. Location: Koksha Valley, Badakshan Province, Afghanistan. Scale: See Image. © Rruff Database
Iltisite: HgSAg(Cl,Br)
Comments: Reddish brown acicular iltisite crystals associated with baryte, cornwallite, strashmirite and quartz. Location: Cap Garonne Mine, Pradet, Var, Provence-Alpes-Cote d'Azur, France. Scale: See Image. © Rruff Database
Jahnsite-(CaMnFe): CaMn++Fe++2Fe+++2(PO4)4(OH)2·8(H2O)
Comments: Orange-brown microcrystalline jahnsite-(CaMnFe) associated with quartz. Location: Voron'i Tundry, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: See Image. © Rruff Database