Mineral Specimen Images (M)

Mineral Specimen Images (M)
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Mineral Specimen Images (M) With 774 Images

Macdonaldite Image

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Macdonaldite: BaCa4[Si16O36(OH)2]·10(H2O)

Comments: Bright white flattened radial macdonaldite aggregate on quartz.
Location: Rush Creek, Fresno County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Macdonaldite Image

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Macdonaldite: BaCa4[Si16O36(OH)2]·10(H2O)

Comments: Bright white flattened radial macdonaldite aggregate on quartz.
Location: Rush Creek, Fresno County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Macedonite Image

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Macedonite: PbTiO3

Comments: B&W image of pseudo-cubic macedonite grains. (AmMin, v56:387).
Location: Accessory mineral in the amazonite-rich, quartz-syenite veins in Crni Kamen near Prilep, Macedonia. Scale: Picture size 100 x.
© American Mineralogist

Macedonite Image

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Macedonite: PbTiO3

Comments: B&W image of pseudo-cubic macedonite grains. (AmMin, v56:387).
Location: Accessory mineral in the amazonite-rich, quartz-syenite veins in Crni Kamen near Prilep, Macedonia. Scale: Picture size 100 x.
© American Mineralogist

Macfallite Image

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Macfallite: Ca2(Mn+++,Al)3(SiO4)(Si2O7)(OH)3  
Johnsenite-(Ce): Na12(Ce,REE,Sr)3Ca6Mn3Zr3W(Si25O73)(CO3)(OH,Cl)2  
Braunite-I: Mn++Mn+++6SiO12

Comments: Tiny - less than 1mm - maroon crystals of mcfallite suspended as inclusions in massive quartz along with larger spots of brown johnsenite-(Ce) and braunite.
Location: Artur mine, Jaguaracu, Minas Gerais, Brazil. Scale: Overall 3 x 2.5 slab.
© Tom Loomis / Dakota Matrix

Macfallite Image

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Macfallite: Ca2(Mn+++,Al)3(SiO4)(Si2O7)(OH)3  
Johnsenite-(Ce): Na12(Ce,REE,Sr)3Ca6Mn3Zr3W(Si25O73)(CO3)(OH,Cl)2  
Braunite-I: Mn++Mn+++6SiO12

Comments: Tiny - less than 1mm - maroon crystals of mcfallite suspended as inclusions in massive quartz along with larger spots of brown johnsenite-(Ce) and braunite.
Location: Artur mine, Jaguaracu, Minas Gerais, Brazil. Scale: Overall 3 x 2.5 slab.
© Tom Loomis / Dakota Matrix

Mackayite Image

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Mackayite: Fe+++Te2O5(OH)

Comments: Greenish brown crystals of mackayite on matrix.
Location: McGuinnity shaft, Goldfield, Esmeralda County, Nevada, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Mackayite Image

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Mackayite: Fe+++Te2O5(OH)

Comments: Greenish brown crystals of mackayite on matrix.
Location: McGuinnity shaft, Goldfield, Esmeralda County, Nevada, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Mackinawite Image

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Mackinawite: (Fe,Ni)S0.9

Comments: Mackinawite inclusions in sulfide ore (polished specimen).
Location: Mackinaw Mine, Snohomish County, Washington, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Mackinawite Image

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Mackinawite: (Fe,Ni)S0.9

Comments: Mackinawite inclusions in sulfide ore (polished specimen).
Location: Mackinaw Mine, Snohomish County, Washington, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Macphersonite Image

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Macphersonite: Pb4(SO4)(CO3)2(OH)2  
Linarite: PbCu(SO4)(OH)2

Comments: Colorless macphersonite with blue linarite.
Location: Leadhills, Strathclyde, Scotland, UK. Scale: Picture size 3 mm.
© Thomas Witzke / Abraxas-Verlag

Macphersonite Image

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Macphersonite: Pb4(SO4)(CO3)2(OH)2  
Linarite: PbCu(SO4)(OH)2

Comments: Colorless macphersonite with blue linarite.
Location: Leadhills, Strathclyde, Scotland, UK. Scale: Picture size 3 mm.
© Thomas Witzke / Abraxas-Verlag

Macquartite Image

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Macquartite: Pb3Cu(CrO4)(SiO3)(OH)4·2(H2O)

Comments: Straw-like prismatic yellow micro crystals of macquartite to about 0.5mm on matrix.
Location: Mammoth - St. Anthony mine, Tiger, Pinal Co., Arizona, USA. Scale: Picture size 5 mm.
© Tom Loomis / Dakota Matrix

Macquartite Image

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Macquartite: Pb3Cu(CrO4)(SiO3)(OH)4·2(H2O)

Comments: Bright yellow, prismatic crystals of macquartite in radial sprays to 0.75mm.
Location: Tiger, Mammoth district, Pinal County, Arizona, USA. Scale: Picture size 5 mm.
© Tom Loomis / Dakota Matrix

Macquartite Image

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Macquartite: Pb3Cu(CrO4)(SiO3)(OH)4·2(H2O)

Comments: Bright yellow, prismatic crystals of macquartite in radial sprays to 0.75mm.
Location: Tiger, Mammoth district, Pinal County, Arizona, USA. Scale: Picture size 5 mm.
© Tom Loomis / Dakota Matrix

Macquartite Image

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Macquartite: Pb3Cu(CrO4)(SiO3)(OH)4·2(H2O)

Comments: Straw-like prismatic yellow micro crystals of macquartite to about 0.5mm on matrix.
Location: Mammoth - St. Anthony mine, Tiger, Pinal Co., Arizona, USA. Scale: Picture size 5 mm.
© Tom Loomis / Dakota Matrix

Madocite Image

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Madocite: Pb17(Sb,As)16S41

Comments: Gray metallic massive madocite fragment.
Location: Madoc, Ontario, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Madocite Image

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Madocite: Pb17(Sb,As)16S41

Comments: Gray metallic massive madocite fragment.
Location: Madoc, Ontario, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Magadiite Image

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Magadiite: NaSi7O13(OH)3·4(H2O)  
Rhodesite: KHCa2Si8O19·5(H2O)

Comments: Earth pale tan massive magadiite with dark yellow crystalline rhodesite.
Location: East Fork, Trinity River, Trinity County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Magadiite Image

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Magadiite: NaSi7O13(OH)3·4(H2O)  
Rhodesite: KHCa2Si8O19·5(H2O)

Comments: Earth pale tan massive magadiite with dark yellow crystalline rhodesite.
Location: East Fork, Trinity River, Trinity County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species
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