Mineral Specimen Images (J)

Jonesite: Ba2(K,Na)[Ti2(Si5Al)O18·n(H2O)

Comments: Transparent, bladed crystal of jonesite on matrix.
Location: Dallas Gem Mine (Gem Mine; Benitoite Mine), New Idria District, San Benito Co., California, USA. Scale: Crystal size 3.5 mm.
© John Veevaert

Jordanite: Pb14(As,Sb)6S23

Comments: Gray metallic crystalline jordanite in fine-grained marble.
Location: Lengenbach Quarry, Binnental, Valais, Switzerland. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Jordanite: Pb14(As,Sb)6S23

Comments: Pseudo-hexagonal, metallic gray crystal of jordanite with purple tarnish on white dolomite.
Location: Lengenbach quarry, Binntal, Valais, Switzerland. Scale: Crystal size 2 mm.
© Walter Gabriel

Jordanite: Pb14(As,Sb)6S23  
Marrite: PbAgAsS3

Comments: Aggregate of gray prismatic crystals of marrite on fine-grained jordanite.
Location: Lengenbach quarry, Binntal, Valais, Switzerland. Scale: Picture high 5 mm.
© Walter Gabriel

Jordisite: MoS2

Comments: Black earthy jordisite on matrix.
Location: Glückauf Shaft, Himmelsfürst Mine, Brand-Erbisdorf, Freiberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 6 mm.
© Thomas Witzke / Abraxas-Verlag

Jorgensenite: Na2(Sr,Ba)14Na2Al12F64(OH,F)  
Weberite: Na2MgAlF7

Comments: SEM image of polished section of aluminofluoride vein mounted in epoxy. Bladed jorgensenite (Jor), barite (Bar) and weberite (Web) with minor quartz, bøgvadite, schorl, pyrite, galena, chalcopyrite and chalcocite.
Location: Ivigtut Cryolite deposit, Ivittuut (Ivigtut), Arsuk Firth, Arsuk, Kitaa (West Greenland) Province, Greenland. Scale: See Image.
© Pavel M. Kartashov

Joseite: Bi4(S,Te)3

Comments: Milky quartz matrix with a 15 mm long group of metallic joseite crystals.
Location: Caldbeck Fells, Cumbria, England, UK. Scale: 5x3.5x2.5 cm.
© John Betts - Fine Minerals

Joseite-B: Bi4(S,Te)3

Comments: Steel gray, metallic, platy Joseite-β in quartz matrix.
Location: Jakub Mine, Kasejovice, Bohemia, Czech Republic. Scale: Picture Size 5x2 cm.
© Diederik Visser

Jouravskite: Ca3Mn++++(SO4,CO3)2(OH)6·12(H2O)

Comments: Lemon yellow granular jouravskite.
Location: N'Chwaning Mine, Kalahari Manganese Field, Northern Cape Province, South Africa. Scale: 3.3 x 2.1 cm.
© John Veevaert

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