Rruff Database's Image Gallery

Katoite: Ca3Al2(SiO4)3-x(OH)4x x=1.5-3

Comments: Pale yellow to colorless euhedral katoite crystals associated with dark brown andradite crystals.
Location: Wilui River, Russia. Scale: See Image.
© Rruff Database

Katophorite: Na(CaNa)Fe++4(Al,Fe+++)Si7AlO22(OH)2  
Yoshimuraite: (Ba,Sr)2(Mn,Fe)2(Ti,Fe)(Si2O7)2(PO4,SO4)(OH)

Comments: Dark green katophorite associated with yoshimuraite. Inset fragment shows the transparency of the katophorite.
Location: Toguchi mine, Shidara, Kitashidara-Gun, Aichi, Japan. Scale: See Image.
© Rruff Database

Keiviite-(Yb): (Yb,Y)2Si2O7

Comments: White massive blebs of keiviite-(Yb) in blue-green fluorite.
Location: Mount Ploskaja, west Keivy, Kola, Russia. Scale: See Image.
© Rruff Database

Kellyite: (Mn++,Mg,Al)3(Si,Al)2O5(OH)4

Comments: Light-yellow irregular to platy tablets of kellyite in matrix.
Location: Near Bald Knob, Alleghany County, North Carolina, USA. Scale: See Image.
© Rruff Database

Khanneshite: (NaCa)3(Ba,Sr,Ce,Ca)3(CO3)5

Comments: Vitreous orange massive khanneshite on single grain.
Location: Tuliylukht Bay, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: See Image.
© Rruff Database

Kinoshitalite: (Ba,K)(Mg,Mn,Al)3Si2Al2O10(OH)2

Comments: Yellowish brown platy crystals of kinshitalite in granular matrix of grayish tephroite.
Location: Hokkejino, Kyoto Prefecture, Kinki Region, Honshu Island, Japan. Scale: See Image.
© Rruff Database

Kitaibelite: Ag10PbBi30S51  
Pavonite: (Ag,Cu)(Bi,Pb)3S5

Comments: Steel-gray metallic massive pavonite (kitaibelite is discredited as Pb-bearing pavonite).
Location: Near Charcas, San Luis Potosi, Mexico. Scale: See Image.
© Rruff Database

Klyuchevskite: K3Cu3(Fe+++,Al)O2(SO4)4  
Klyuchevskite-Duplicate: K3Cu3Fe+++O2(SO4)4

Comments: Clusters of dark green radiating prismatic klyuchevskite crystals associated with langbeinite, co-type sample. Klyuchevskite-duplicate is the same mineral with different Dana numbers.
Location: Yadevitaya fumarole, Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia. Scale: See Image.
© Rruff Database

Klyuchevskite-Duplicate: K3Cu3Fe+++O2(SO4)4  
Klyuchevskite: K3Cu3(Fe+++,Al)O2(SO4)4

Comments: Clusters of dark green radiating prismatic klyuchevskite crystals associated with langbeinite, co-type sample. Klyuchevskite-duplicate is the same mineral with different Dana numbers.
Location: Yadevitaya fumarole, Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia. Scale: See Image.
© Rruff Database

Kolarite: PbTeCl2

Comments: Steel-gray, metallic, massive, polished fragment of kolarite embedded in epoxy.
Location: Oktyabr'sky Mine, Noril'sk, Putoran Mts, Taymyrskiy Autonomous Okrug, Eastern-Siberian. Scale: See Image.
© Rruff Database

Kostovite: CuAuTe4

Comments: Dark gray metallic fragment of kostovite embedded in epoxy.
Location: Chelopech Mine, Chelopech Obshchina, Balkan Mts (Stara-Planina Mts), Sofiya (Sofia) Oblast, Bulgaria. Scale: See Image.
© Rruff Database

Krasnovite: Ba(Al,Mg)(PO4,CO3)(OH)2·(H2O)

Comments: Pastel blue, vitreous massive krasnovite, associated with white ankerite.
Location: Cerro Sapo Carbonatite dike, Cochabamba, Bolivia. Scale: See Image.
© Rruff Database

Labuntsovite-Fe: Na4K4(Ba,K)2(Fe,Mg,Mn)1+xTi8(Si4O12)4(O,OH)8·10(H2O)

Comments: Orange labuntsovite-Fe in matrix.
Location: Desourdy Quarry, Mont St. Hilaire, Rouville County, Quebec, Canad. Scale: See Image.
© Rruff Database

Levyne-Na: (Na2,Ca,K2)Al2Si4O12·6(H2O)

Comments: White tabular hexagonal-shaped levyne-Na crystals associated with analcime.
Location: Dallas, Oregon, USA. Scale: See Image.
© Rruff Database

Magnesioanthophyllite: (Mg,Fe++)7Si8O22(OH)2  
Anthophyllite: [ ]Mg7Si8O22(OH)2

Comments: Schistose amphibolite rock composed primarily of anthophyllite (magnesioanthophyllite is now considered to be anthophyllite).
Location: Winchester, Riverside County, California, USA. Scale: See Image.
© Rruff Database

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

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

Magnesioholmquistite: Li2(Mg,Fe++)3Al2Si8O22(OH)2  
Holmquistite: [ ](Li2Mg3Al2)Si8O22(OH)2

Comments: Dark blue thin bladed crystals of holmquistite (magnesioholmquistite) in amphibolite.
Location: Uto, Sodermanland, Sweden. Scale: See Image.
© Rruff Database

Malanite: Cu(Pt,Ir)2S4

Comments: Epoxy grain mount of silver gray metallic polished fragment of malanite.
Location: Placer concentrate from Philipp Massif, Kamchatka, Russia. Scale: See Image.
© Rruff Database

Manaksite: KNaMn++Si4O10  
Bario-olgite: Na(Ba,Sr,Na,REE)PO4

Comments: Pale brown massive manaksite associated with grayish-green bario-olgite, purple ussingite and colorless serandite.
Location: Palitra pegmatite, Kedykverpakhk Mountain, Lovozero massif, Kola Peninsula, Russia. Scale: See Image.
© Rruff Database

Marinellite: [(Na,K)42Ca6](Si36Al36O144)(SO4)8Cl2·6(H2O)

Comments: Colorless to pale bluish-gray anhedral marinellite crystal.
Location: Monte Cavalluccio, Sacrofano, Campagnano di Roma, Italy. Scale: See Image.
© Rruff Database