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Dakota Matrix was founded in 1996 and has offered systematic and rare mineral specimens online since 1998.

Exceptional Minerals features excellent, high quality mineral specimens for sale. We also have a weekly Best Offer Mineral Auction.

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's Image Gallery With 4041 Images

Jennite Image

Images:

Jennite: Ca9Si6O18(OH)6·8H2O

Comments: Bright white fibrous jennite veinlet in rock.
Location: Crestmore Quarry, Riverside County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Jensenite Image

Images:

Jensenite: Cu++3Te++++++O6·2(H2O)

Comments: Small green crystals of jensenite in matrix.
Location: Centennial Eureka Mine, Tintic District, Juab Co., Utah, USA. Scale: Picture size 1.2 mm.
© Thomas Witzke / Abraxas-Verlag

Jentschite Image

Images:

Jentschite: TlPbAs2SbS6

Comments: Black and dark red translucent needles of jentschite on white dolomite.
Location: Lengenbach quarry, Binntal, Valais, Switzerland. Scale: Picture width 1 cm.
© Walter Gabriel

Jeppeite Image

Images:

Jeppeite: (K,Ba)2(Ti,Fe+++)6O13

Comments: Dark brown crystalline granular jeppeite.
Location: Walgidee Hills, Western Australia, Australia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Jeremejevite Image

Images:

Jeremejevite: Al6B5O15(F,OH)3

Comments: Partial crystal fragment of jeremejevite.
Location: Mile 72, Swakopmund, Namibia. Scale: Crystal size 0.5 cm.
© John Veevaert

Jeremejevite Image

Images:

Jeremejevite: Al6B5O15(F,OH)3

Comments: Two-toned hexagonal crystal of jeremejevite with blue bases and white terminations.
Location: Erongo Mountains, Namibia. Scale: Crystal size 2 cm.
© John Veevaert

Jeromite Image

Images:

Jeromite: As(S,Se)2

Comments: Orange, powdery jeromite on matrix.
Location: Salar de Surire, Tarapaca, Chile. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Jerrygibbsite Image

Images:

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

Jervisite Image

Images:

Jervisite: (Na,Ca,Fe++)(Sc,Mg,Fe++)Si2O6
Cascandite: Ca(Sc,Fe++)Si3O8(OH)

Comments: White, acicular jervisite crystals and pink cascandite crystals.
Location: Seula min,, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy. Scale: Crystal Size 1 mm.
© Sergio Varvello / Mineral Service

Jimboite Image

Images:

Jimboite: Mn3B2O6

Comments: Dark red-brown crystalline jimboite veinlet in massive rhodochrosite.
Location: Rito Mine, Azuma Mura, Seta-gun, Gumma, Japan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Jimthompsonite Image

Images:

Jimthompsonite: (Mg,Fe++)5Si6O16(OH)2
Clinojimthompsonite: (Mg,Fe++)5Si6O16(OH)2

Comments: Pale green to white glassy crystalline fibrous clinojimthompsonite intergrown with jimthompsonite.
Location: Chester, Windsor County, Vermont, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Jinshajiangite Image

Images:

Jinshajiangite: Na2K5BaCa(Fe,Mn)8(Ti,Fe,Nb,Zr)4Si8O32(O,F,H2O)6

Comments: Reddish elongated junshajiangite grain to 0.3mm in matrix.
Location: Norra Karr, Sweden. Scale: Picture size 5 mm.
© Tom Loomis / Dakota Matrix

Jixianite Image

Images:

Jixianite: Pb(W,Fe+++)2(O,OH)7
Cuprotungstite: Cu++3(WO4)2(OH)2

Comments: Reddish brown crystal druse of jixianite with minor tan cuprotungstite.
Location: Apache Mine, Hidalgo County, New Mexico, USA. Scale: See Image.
© Jeff Weissman / Photographic Guide to Mineral Species

Joaquinite-(Ce) Image

Images:

Joaquinite-(Ce): NaFe++Ba2Ce2(Ti,Nb)2[Si4O12]2O2(OH,F)·(H2O)

Comments: Brown crystal of joaquinite-(Ce).
Location: Benitoite Gem mine, San Benito County, California, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Joelbruggerite Image

Images:

Joelbruggerite: Pb3Zn3Sb+++++As2O13(OH)
Mimetite: Pb5(AsO4)3Cl

Comments: SEM image of a barrel-shaped joëlbruggerite crystal lanced by acicular mimetite. (AmMin, v94:1012).
Location: Black Pine mine, 14.5 km northwest of Philipsburg, Granite County, Montana, USA. Scale: Crystal Size 30 µm across.
© American Mineralogist

Johachidolite Image

Images:

Johachidolite: CaAlB3O7

Comments: 0.91 carat round cut johachidolite gem.
Location: Byant Gyi, Pein Pyit, Mogok, Burma (Myanmar). Scale: Not Given.
© Adam Larson

Johachidolite Image

Images:

Johachidolite: CaAlB3O7

Comments: Yellowish orange crystal of johachidolite on matix (quartz, muscovite).
Location: Pein Pyit, Mogok, Mandalay Myanmar. Scale: Crystal Size: 1.2 × 0.7 cm.
© Fabre Minerals

Johannite Image

Images:

Johannite: Cu(UO2)2(SO4)2(OH)2·8(H2O)

Comments: Green colored johannite crystals.
Location: Happy Jack mine, White Canyon, San Juan County, Utah, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Johannite Image

Images:

Johannite: Cu(UO2)2(SO4)2(OH)2·8(H2O)
Uranopilite: [(UO2)6(SO4)O2(OH)6(H2O)6]·8(H2O)

Comments: Bright yellow rosettes of uranopilite with pale greenish yellow johannite on matrix.
Location: Apex Mine, Lander Co., Nevada, USA. Scale: Picture size 0.5 cm.
© Paul M. Schumacher

Johannite Image

Images:

Johannite: Cu(UO2)2(SO4)2(OH)2·8(H2O)
Uranopilite: [(UO2)6(SO4)O2(OH)6(H2O)6]·8(H2O)

Comments: Green aggregates of minute, acicular johannite and yellow uranopilite and clear, tabular aragonite crystals on matrix.
Location: Apex Mine, Lander Co., Nevada, USA. Scale: Picture size 1.5 cm.
© Paul M. Schumacher

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