Rruff Database's Image Gallery

Fluoro-ferroleakeite: NaNa2(Fe++2Fe+++2Li)Si8O22F2

Comments: Heavy mineral concentrate of dark blue to black fluoro-ferroleakeite grains, co-type sample.
Location: Questa, Taos County, New Mexico, USA. Scale: See Image.
© Rruff Database

Fluoro-magnesio-arfvedsonite: NaNa2(Mg,Fe++)4Fe+++[Si8O22](F,OH)2

Comments: Heavy mineral concentrate of small dark green fragments of fluoro-magnesio-arfvedsonite.
Location: Unknown. Scale: See Image.
© Rruff Database

Gadolinite-(Y): Y2Fe++Be2Si2O10  
Calciogadolinite: CaREE(Fe+++)Be2Si2O10

Comments: Black vitreous, metamict massive gadolinite-(Y) also known as calcian gadolinite.
Location: Ytterøya Mine, Røvika, Ytterøya (island), Levanger, Nord-Trondelag, Norway. Scale: See Image.
© Rruff Database

Gedrite: [ ]Mg5Al2Si6Al2O22(OH)2  
Magnesiogedrite: (Mg,Fe++)5Al2Si6Al2O22(OH)2

Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite).
Location: Bamble, Telemark, Norway. Scale: See Image.
© Rruff Database

Georgbokiite: Cu5O2(SeO3)2Cl2

Comments: Deep reddish brown polished fragment of georgbokiite embedded in epoxy, co-type material.
Location: Tolbachik Volcano, Kamchatka Peninsula, Russia. Scale: Picture Size 300 µm.
© Rruff Database

Hafnon: HfSiO4

Comments: Colorless unconsolidated hafnon grains, sample is from Speer and Cooper (1982).
Location: Synthetic from Alex Speer. Scale: See Image.
© Rruff Database

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

Jamesite: Pb2Zn2Fe+++5(AsO4)5O4  
Duftite-beta: PbCu(AsO4)(OH)

Comments: Reddish-brown bladed jamesite crystals overgrown with white dolomite and associated with dark green duftite.
Location: Tsumeb mine, Tsumeb, Otavi District, Oshikoto, Namibia. Scale: See Image.
© Rruff Database

Jerrygibbsite: (Mn,Zn)9(SiO4)4(OH)2

Comments: Pale pink interlocking anhedral jerrygibbsite grains associated with black zincite and franklinite. Co-type specimen.
Location: Parker Shaft, Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA. Scale: See Image.
© Rruff Database

Kamaishilite: Ca2Al2SiO6(OH)2

Comments: Colorless crystalline massive kamaishilite.
Location: Kamaishi mine, Iwate Prefecture, Tohoku Region, Honshu Island, Japan. Scale: See Image.
© Rruff Database

Karchevskyite: [Mg18Al9(OH)54][Sr2(CO3,PO4)9(H2O,H3O)11]

Comments: Colorless hexagonal plates of karchevskyite, co-type material, associated with phlogopite, dolomite, pyrite, and magnetite.
Location: Zheleznyi mine, Kovdor Massif, Kola Peninsula, Russia. Scale: See Image.
© Rruff Database