Tom Loomis's Image Gallery

Johnsenite-(Ce): Na12(Ce,REE,Sr)3Ca6Mn3Zr3W(Si25O73)(CO3)(OH,Cl)2  
Macfallite: Ca2(Mn+++,Al)3(SiO4)(Si2O7)(OH)3  
Braunite-I: Mn++Mn+++6SiO12

Comments: Tiny - less than 1mm - maroon crystals of mcfallite suspended as inclusions in massive quartz along with larger spots of brown johnsenite-(Ce) and braunite.
Location: Artur mine, Jaguaracu, Minas Gerais, Brazil. Scale: Overall 3 x 2.5 slab.
© Tom Loomis / Dakota Matrix

Juangodoyite: Na2Cu(CO3)2  
Sanromanite: Na2CaPb3(CO3)5  
Chalconatronite: Na2Cu(CO3)2·3(H2O)

Comments: Yellowish, long balded sanromanite crystals in vug with platy, blue juangodoyite replacing green chalconatronite.
Location: Santa Rosa mine, Iquique Province, Tarapaca, Chile. Scale: Picture size 3 mm.
© Tom Loomis / Dakota Matrix

Juanite: Ca10Mg4Al2Si11O39·4(H2O) (?)

Comments: Light greenish translucent grains of juanite with dark magnetite.
Location: Iron Hill, Gunnison Co., Colorado, USA. Scale: Picture size 1 cm.
© Tom Loomis / Dakota Matrix

Julgoldite-(Fe+++): Ca2Fe+++(Fe+++,Al)2(SiO4)(Si2O7)(O,OH)2·(H2O)

Comments: Black, prismatic micro-crystals of julgoldite-(Fe+++) in white apophyllite.
Location: Langban mine, Filipstad , Värmland, Sweden. Scale: 5x3mm.
© Tom Loomis / Dakota Matrix

Junitoite: CaZn2Si2O7·(H2O)

Comments: Clear, platy, flat lying crystals of junitoite (red marker) to 2mm associated with lavender smectite.
Location: Christmas mine, Gila Co., Arizona, USA. Scale: Picture size 5 mm.
© Tom Loomis / Dakota Matrix

Junoite: Pb3Cu2Bi8(S,Se)16

Comments: Solid crystalline mass of dark gray, metallic junoite. Partially sawed indicating analytical verification.
Location: 700 level, Juno Mine, Tennant Creek, Northern Territory, Australia. Scale: 3x2x2cm.
© Tom Loomis / Dakota Matrix

Kalifersite: (K,Na)5Fe+++7Si20O50(OH)6·12(H2O)

Comments: Brownish-red crystalline granular aggregates of kalifersite in rock matrix composed of fibers to 5mm.
Location: Mt. Rasvumchorr, Khibiny massif, Kola Peninsula, Russia. Scale: Specimen size 3.5 x 2 x 1.5cm.
© Tom Loomis / Dakota Matrix

Kamotoite-(Y): (Y,Nd,Gd)2U++++++4(CO3)3O12·14.5(H2O)

Comments: Bright yellow, feather-like kamotoite-(Y) crystal habits.
Location: Kamoto mine, Kolwezi, Shaba, Democratic Republic of the Congo. Scale: Picture size 2 cm.
© Tom Loomis / Dakota Matrix

Karibibite: Fe+++2As+++4(O,OH)9

Comments: Orange yellow, radial sprays of karibibite on löllingite to 0.75mm.
Location: Galileia, Minas Gerais, Brazil. Scale: picture size 5 mm.
© Tom Loomis / Dakota Matrix

Kentrolite: Pb2Mn+++2Si2O9

Comments: Brownish red grains of kentrolite in matrix.
Location: Langban mine, Varmland, Sweden. Scale: Picture size 5 mm.
© Tom Loomis / Dakota Matrix

Kermesite: Sb2S2O  
Paakkonenite: Sb2AsS2

Comments: Much of the matrix is the gray metallic paakkonenite with red crystals of kermesite and minute yellow crystals of valentinite.
Location: Cai' ao mine, Danfong Co., Shaanxi Prov., China. Scale: 3x2x2cm.
© Tom Loomis / Dakota Matrix

Khaidarkanite: Na0.34Cu4Al3(OH)14F3·2(H2O)

Comments: Sky blue acicular radial sprays of khaidarkanite.
Location: Khaidarkan, Kyrgizia. Scale: Crystal size 1 mm.
© Tom Loomis / Dakota Matrix

Kidwellite: Na(Fe+++,Cu)9+x(PO4)6(OH)11·3(H2O)  
Strengite: Fe+++PO4·2(H2O)

Comments: Spherical, crystalline aggregate of purple strengite on green kidwellite.
Location: Three Oak Gap, Polk Co., Arkansas, USA. Scale: Crystal size 2 mm.
© Tom Loomis / Dakota Matrix

Kinoite: Ca2Cu2Si3O8(OH)4  
Dioptase: CuSiO2(OH)2

Comments: Fibrous crystals of blue-green dioptase to 0.75mm on clear apophyllite associated with dark blue kinoite.
Location: Christmas mine, Gila Co., Arizona, USA. Scale: Pictures size 6 mm.
© Tom Loomis / Dakota Matrix

Kinoite: Ca2Cu2Si3O8(OH)4

Comments: Kinoite crystals as single tabular or platy blue crystals to about 0.3mm and as fan-like sprays. The crystals exhibit striations, a key to distinguishing it from stringhamite.
Location: Christmas mine, Gila Co., Arizona, USA. Scale: Picture size 3 mm.
© Tom Loomis / Dakota Matrix

Kochkarite: PbBi4Te7

Comments: Bright silvery veinlets of kochkarite throughout matrix.
Location: Kochkar' Au deposit, Plast, Urals Region, Russia. Scale: Overall: 2.5 x 2 x 1.5 cm.
© Tom Loomis / Dakota Matrix

Kristiansenite: Ca2ScSn(Si2O7)(Si2O6OH)

Comments: Two very nice, clear, intergrown crystals of kristiansenite in pinkish matrix.
Location: Heftetjern pegmatite, Tørdal, Drangedal, Telemark, Norway. Scale: Crystal size 1 mm.
© Tom Loomis / Dakota Matrix

Krupkaite: PbCuBi3S6

Comments: Acicular, fine metallic crystal sprays of krupkaite to 4mm with pale yellow manganoan siderite.
Location: Julcani district, Peru. Scale: Picture size 1 cm.
© Tom Loomis / Dakota Matrix

Kurnakovite: MgB3O3(OH)5·5(H2O)

Comments: Chalky white outer alteration, else gray, translucent, coarsely-crystalline kurnakovite.
Location: The Open Pit, Boron, Kern Co., California, USA. Scale: 5x4x3cm.
© Tom Loomis / Dakota Matrix

Lammerite: Cu3[(As,P)O4]2

Comments: Deep, lustrous green lammerite crystals to about 1mm throughout vuggy matrix.
Location: Guanaco mine, Taltal, Antofagasta, Chile. Scale: Picture size 1 cm.
© Tom Loomis / Dakota Matrix