Mineral Specimen Images (F)

Mineral Specimen Images (F)
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Mineral Specimen Images (F) With 414 Images

Francevillite Image

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Francevillite: (Ba,Pb)(UO2)2V2O8·5(H2O)  
Chervetite: Pb2V2O7

Comments: Bottle brown tabular crystals of chervetite on yellow francevilleite.
Location: Mounana, Haut-Ogoue, Gabon. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Francevillite Image

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Francevillite: (Ba,Pb)(UO2)2V2O8·5(H2O)  
Chervetite: Pb2V2O7

Comments: Bottle brown tabular crystals of chervetite on yellow francevilleite.
Location: Mounana, Haut-Ogoue, Gabon. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Francevillite Image

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Francevillite: (Ba,Pb)(UO2)2V2O8·5(H2O)  
Curienite: Pb(UO2)2V2O8·5(H2O)

Comments: Intense yellow curienite and orange francevillite.
Location: Mouonana, Haut-Ogoue, Gabon. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Francevillite Image

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Francevillite: (Ba,Pb)(UO2)2V2O8·5(H2O)

Comments: Specimen of orange francevillite with minor yellow curienite.
Location: Mouana Mine, Gabon. Scale: Crystal size 4 mm.
© John Veevaert

Franciscanite-III Image

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Franciscanite-III: Mn++6V+++++2Si2(O,OH)14

Comments: Dark reddish brown large franciscanite grains to 1.5cm in tan-colored gageite matrix.
Location: Pennsylvania mine, Santa Clara Co., California, USA. Scale: 5.5 x 4 x 3cm.
© Tom Loomis / Dakota Matrix

Franciscanite-III Image

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Franciscanite-III: Mn++6V+++++2Si2(O,OH)14

Comments: Dark reddish brown large franciscanite grains to 1.5cm in tan-colored gageite matrix.
Location: Pennsylvania mine, Santa Clara Co., California, USA. Scale: 5.5 x 4 x 3cm.
© Tom Loomis / Dakota Matrix

Francisite Image

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Francisite: Cu3Bi(SeO3)2O2Cl

Comments: Greenish crusts of francisite on matrix.
Location: Baccu Locci Mine, Villaputzu, Cagliari Province, Sardinia, Italy. Scale: Picture size 3.5 mm.
© Thomas Witzke / Abraxas-Verlag

Francisite Image

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Francisite: Cu3Bi(SeO3)2O2Cl

Comments: Fine acicular crystals of green francisite to 0.1mm on matrix.
Location: Iron Monarch iron mine, Iron Knob, South Australia, Australia. Scale: Picture size 1.5 cm.
© Tom Loomis / Dakota Matrix

Francisite Image

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Francisite: Cu3Bi(SeO3)2O2Cl

Comments: Greenish crusts of francisite on matrix.
Location: Baccu Locci Mine, Villaputzu, Cagliari Province, Sardinia, Italy. Scale: Picture size 3.5 mm.
© Thomas Witzke / Abraxas-Verlag

Francisite Image

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Francisite: Cu3Bi(SeO3)2O2Cl

Comments: Fine acicular crystals of green francisite to 0.1mm on matrix.
Location: Iron Monarch iron mine, Iron Knob, South Australia, Australia. Scale: Picture size 1.5 cm.
© Tom Loomis / Dakota Matrix

Franckeite Image

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Franckeite: (Pb,Sn)6Fe++Sn2Sb2S14  
Potosiite: Pb6Sn2FeSb2S14

Comments: Visually indistinguishable metallic potosiite/franckeite crystals to 6 mm..
Location: San Jose mine, Oruro City, Oruro Department, Bolivia. Scale: Crystal size 6 mm.
© Rob Lavinsky

Franckeite Image

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Franckeite: (Pb,Sn)6Fe++Sn2Sb2S14

Comments: Massive franckeite with pockets of small .5 mm crystals.
Location: Animas Mine, Atocha-Quechisla district, Sud Chichas Province, Potosí Department, Bolivia. Scale: 25x20x15 mm.
© John Betts - Fine Minerals

Franckeite Image

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Franckeite: (Pb,Sn)6Fe++Sn2Sb2S14  
Potosiite: Pb6Sn2FeSb2S14

Comments: Visually indistinguishable metallic potosiite/franckeite crystals to 6 mm..
Location: San Jose mine, Oruro City, Oruro Department, Bolivia. Scale: Crystal size 6 mm.
© Rob Lavinsky

Franckeite Image

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Franckeite: (Pb,Sn)6Fe++Sn2Sb2S14

Comments: Massive franckeite with pockets of small .5 mm crystals.
Location: Animas Mine, Atocha-Quechisla district, Sud Chichas Province, Potosí Department, Bolivia. Scale: 25x20x15 mm.
© John Betts - Fine Minerals

Francoanellite Image

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Francoanellite: H6(K,Na)3(Al,Fe+++)5(PO4)8·13(H2O)

Comments: Chalky massive francoanellite.
Location: Giottodi Castellana Cave, Puglia, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Francoanellite Image

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Francoanellite: H6(K,Na)3(Al,Fe+++)5(PO4)8·13(H2O)

Comments: Chalky massive francoanellite.
Location: Giottodi Castellana Cave, Puglia, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Franconite Image

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Franconite: Na2Nb4O11·9(H2O)

Comments: Irregular to ball-shaped aggregates of silky white franconite on white albite.
Location: Mont St. Hilaire, Quebec, Canada. Scale: Specimen Size 2.5 x 4 cm.
© Diederik Visser

Franconite Image

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Franconite: Na2Nb4O11·9(H2O)

Comments: Irregular to ball-shaped aggregates of silky white franconite on white albite.
Location: Mont St. Hilaire, Quebec, Canada. Scale: Specimen Size 2.5 x 4 cm.
© Diederik Visser

Frankamenite Image

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Frankamenite: K3Na3Ca5(Si12O30)[F,(OH)]4·(H2O)

Comments: Grayish lilac, fine-grained frankamentite.
Location: Murun Massif, Irkutsk District, Russia. Scale: Specimen Size 3.5x2.5x2.5 cm.
© Sonke Stolze / Systematic Minerals

Frankamenite Image

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Frankamenite: K3Na3Ca5(Si12O30)[F,(OH)]4·(H2O)

Comments: Grayish lilac, fine-grained frankamentite.
Location: Murun Massif, Irkutsk District, Russia. Scale: Specimen Size 3.5x2.5x2.5 cm.
© Sonke Stolze / Systematic Minerals
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