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's Image Gallery With 4041 Images

Franciscanite-III Image

Images:

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

Images:

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

Images:

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

Images:

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

Images:

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

Francoanellite Image

Images:

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

Images:

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

Images:

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

Frankdicksonite Image

Images:

Frankdicksonite: BaF2

Comments: Cubic crystals of frankdicksonite. AmMin v59:885.
Location: Carlin gold deposit, Eureka County, Nevada, USA. Scale: See Image.
© American Mineralogist

Frankhawthorneite Image

Images:

Frankhawthorneite: Cu2Te++++++O4(OH)2

Comments: Very small green crystals of frankhawthorneite on a light green unknown mineral.
Location: Centennial Eureka Mine, Tintic District, Juab Co., Utah, USA. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Franklinfurnaceite Image

Images:

Franklinfurnaceite: Ca2(Fe+++,Al)Mn+++Mn++3Zn2Si2O10(OH)8

Comments: Brown resinous mass of franklinfurnaceite, in black franklinite, with white calcite.
Location: Franklin Mine, Franklin, Sussex Co., New Jersey, USA. Scale: Picture Size 6 mm.
© Jeff Weissman / Photographic Guide to Mineral Species

Franklinite Image

Images:

Franklinite: (Zn,Mn++,Fe++)(Fe+++,Mn+++)2O4

Comments: Black, octahedral franklinite crystals to 1.4 cm across on white calcite.
Location: Franklin, Sussex County, New Jersey, USA. Scale: 2.9 x 2 cm.
© John Veevaert

Franklinite Image

Images:

Franklinite: (Zn,Mn++,Fe++)(Fe+++,Mn+++)2O4
Esperite: PbCa3Zn4(SiO4)4
Hardystonite: Ca2ZnSi2O7

Comments: Pale brown porcelaneous esperite with pinkish gray hardystonite and black franklinite.
Location: Franklin, Sussex County, New Jersey. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Franklinite Image

Images:

Franklinite: (Zn,Mn++,Fe++)(Fe+++,Mn+++)2O4
Rinmanite: (Zn,Mn)2Sb2Mg2Fe4O14(OH)2

Comments: B&W image (reflected light) of a polished section of rinmanite and franklinite (white) with associated silicates.
Location: Garpenberg Norra Zn-Pb mine, Hedemora, Dalarna, in south-central Sweden. (CanMin, v39:1675). Scale: Scale Bar 0.2 mm.
© Canadian Mineralogist

Franklinphilite Image

Images:

Franklinphilite: (K,Na)4(Mn++,Mg,Zn)48(Si,Al)72(O,OH)216·6(H2O)

Comments: A cleavage fragment of nearly pure franklinphilite.
Location: Franklin mine, Sussex County, New Jersey.. Scale: Fragment Size 2.5 mm.
© Jeff Weissman / Photographic Guide to Mineral Species

Fransoletite Image

Images:

Fransoletite: H2Ca3Be2(PO4)4·4(H2O)

Comments: Light blue crystals of fransoletite.
Location: Tip Top mine, Custer, Custer County, South Dakota, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Franzinite Image

Images:

Franzinite: [(Na,K)30Ca10][Si30Al30O120](SO4)10·2(H2O)

Comments: Opaque white platy crystals of franzinite on brown vesuvianite crystals.
Location: Pitigliano, Grosseto, Tuscany, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Freboldite Image

Images:

Freboldite: CoSe

Comments: Copper-red, tarnished, freboldite, as granular material intermixed with darker colored sandstone matrix.
Location: Temple Mountain, San Rafael District (San Rafael Swell), Emery Co., Utah, USA. Scale: Specimen Size 2 cm.
© Jeff Weissman / Photographic Guide to Mineral Species

Fredrikssonite Image

Images:

Fredrikssonite: Mg2(Mn+++,Fe+++)O2(BO3)
Hausmannite: Mn++Mn+++2O4

Comments: Red-brown elongated crystalline fredrikssonite in calcite with granular hausmannite.
Location: Langban, Varmland, Sweden. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Freibergite Image

Images:

Freibergite: (Ag,Cu,Fe)12(Sb,As)4S13

Comments: Dark metallic freibergite in white quartz.
Location: Freiberg, Freiberg District, Erzgebirge, Saxony, Germany. Scale: 35x20x10 mm.
© John Betts - Fine Minerals

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