's Image Gallery

Juabite: (Ca,Fe++)Cu10(Te++++O3)4(As+++++O4)4(OH)2·4(H2O)

Comments: SEM image of a broken juabite platy aggregate which shows the perfect {OlO} cleavage. (MinMag, v61:139).
Location: Mine dumps of the Centennial Eureka mine, Tintic District, Juab County, Utah, USA. Scale: Scale Bar 60 µm.
© Mineralogical Magazine

Juangodoyite: Na2Cu(CO3)2

Comments: Rich blue veinlets of juangodoyite in matrix..
Location: Mina Santa Rosa, Iquique, Chile. Scale: 3.5x2.9x2.2 cm.
© Richard Dale / Dale Minerals

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

Juanitaite: (Cu,Ca,Fe)10Bi(AsO4)4(OH)11·2(H2O)

Comments: Microplates of juanitaite on matrix. Scanning Electron Microscope Image.
Location: Gold Hill, Utah. Scale: Field of View 125 µm.
© William Wise

Juanitaite: (Cu,Ca,Fe)10Bi(AsO4)4(OH)11·2(H2O)

Comments: Green juanitaite in quartz matrix, with conichalcite and sulfides.
Location: Gold Hill Mine, Tooele County, Utah, USA. Scale: 5.4 x 4 x 2.6 cm.
© Richard Dale / Dale Minerals

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)(OH)2·(H2O)

Comments: Black julgodite-(Fe) and doubly-terminated, brilliant, water clear fluorapophyllite crystals on basalt.
Location: Jalgaon, Maharashtra, India. Scale: 20 x 13 x 5 cm.
© Fabre Minerals

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

Julienite: Na2Co++(SCN)4·8(H2O)

Comments: Bright blue nearly opaque prismatic micro crystal of julienite.
Location: Chamibumba, near Kambove, Katanga, Shaba, Zaire. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Jungite: Ca2Zn4Fe+++8(PO4)9(OH)9·16(H2O)

Comments: Translucent cleavage fragment of jungite.
Location: Hagendorf, Bayern, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Junitoite: CaZn2Si2O7·(H2O)

Comments: Platy transparent junitoite crystal cluster lying flat on white limestone matrix.
Location: Christmas Mine, near Hayden, Gila County, Arizona. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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

Juonniite: CaMgSc(PO4)2(OH)·4(H2O)

Comments: Brownish grain of juonniite on matrix.
Location: Kovdor Mine, Kovdor massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Jurbanite: Al(SO4)(OH)·5(H2O)

Comments: White spherical crusts of jurbanite on matrix.
Location: Le Cetine Mine, Siena, Tuscany, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Kaatialaite: Fe+++[H2As+++++O4]3·5-5.5(H2O)

Comments: White kaatialaite with arsenolite on native arsenic.
Location: Shaft 371, Schlema-Hartenstein area, Erzgebirge, Saxony, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Kaersutite: NaCa2(Mg4Ti)Si6Al2O23(OH)2

Comments: Dark greenish-brown prismatic kaersutite crystals in matrix.
Location: Nugssuaq, Umanak, Greenland. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Kafehydrocyanite: K4Fe++(CN)6·3(H2O)

Comments: Micro platy crystal of kafehydrocyanite.
Location: Medvezhii Log, East Sayan Mountains, Krasnoyarsk Territory, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Kainite: MgSO4·KCl·3(H2O)  
Szaibelyite: MgBO2(OH)

Comments: pale violet granular kainite intermixed with white ascharite (szaibelyite).
Location: Havesa, Empelde, Hannover, Niedersachsen, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Kainosite-(Y): Ca2(Y,Ce)2Si4O12(CO3)·(H2O)

Comments: Group of reddish brown kainosite-(Y) crystals on fluorite.
Location: Seula mine (ex Montecatini quarry), Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy. Scale: Crystal Size 1.6 mm.
© Sergio Varvello / Mineral Service