Mineral Specimen Images (M)

Mineral Specimen Images (M)
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Mineral Specimen Images (M) With 387 Images

Medaite Image

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Medaite: (Mn,Ca)6(V+++++,As)Si5O18(OH)

Comments: Orange crystalline medaite crust.
Location: Molinello Mine, near Chiavari, Liguria, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Medenbachite Image

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Medenbachite: Bi2Fe+++(Cu,Fe+++)(O,OH)2(OH)2(AsO4)2

Comments: SEM image of tabular plates of mendenbachite crystals. (AmMin, v81:505).
Location: Silicified barite vein from Reichenbach near Bensheim, Odenwald, Hesse, Germany. Scale: Scale Bar 20 µm.
© American Mineralogist

Meionite Image

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Meionite: Ca4Al6Si6O24CO3

Comments: Clear meionite crystal on matrix.
Location: Monte Somma (Vesuvius), Campania, Italy. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Meionite Image

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Meionite: Ca4Al6Si6O24CO3  
Kaliophilite: KAlSiO4

Comments: Tan to white fibrous kaliophilite crystal bundle with white translucent meionite on matrix.
Location: Mont Somma, Naples, Campania, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Meixnerite Image

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Meixnerite: Mg6Al2(OH)18·4(H2O)

Comments: Colorless crystals of meixnerite.
Location: Zeilberg Quarry, Maroldsweisach, Bavaria, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Melanocerite-(Ce) Image

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Melanocerite-(Ce): (Ce,Th,Ca)5(Si,B)3O12(OH,F)·n(H2O) (?)

Comments: Black, vitreous, crystalline aggregates of melanocerite-(Ce) in matrix.
Location: Cardiff Uranium mine, Wilberforce, Monmouth Township, Haliburton Co., Ontario, Canada. Scale: See Image.
© Paul M. Schumacher

Melanophlogite Image

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Melanophlogite: SiO2·n(C,H,O,S)

Comments: Yellow, transparent Melanophlogite crystals.
Location: Racalmuto, Sicily, Italy. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Melanotekite Image

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Melanotekite: Pb2Fe+++2Si2O9

Comments: Black metallic granular melanotekite with reddish brown andradite.
Location: Langban, Varmland, Sweden. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Melanothallite Image

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Melanothallite: Cu2OCl2  
Chloromenite: Cu9O2(SeO3)4Cl6

Comments: Olive green crystalline chloromenite on blue-green melanothallite.
Location: North Break, Second Cone of main fracture eruption, Tolbachik Volcano, Kamchatka District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Melanothallite Image

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Melanothallite: Cu2OCl2

Comments: Bluish green melanothallite grain.
Location: North Break, Second Cone, Main Eruption Site, Tolbachik, Kamchatka District, Russian Far East, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Melanovanadite Image

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Melanovanadite: CaV++++2V+++++2O10·5(H2O)

Comments: Dark greenish-black fine-grained massive melanovanadite.
Location: Minas Ragra, near Cerro de Pasco, Junin, Peru. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Melanterite Image

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Melanterite: Fe++SO4·7(H2O)

Comments: Deep greenish blue encrustation of melanterite. The pistanite variety is copper-bearing where Cu replaces some of the Fe in the crystal structure.
Location: Patagonia District, Arizona, USA. Scale: 5 x 9.5 cm.
© John Veevaert

Melilite Image

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Melilite: (Ca,Na)2(Al,Mg,Fe++)(Si,Al)2O7

Comments: Barrel-shaped root-beer colored melilite crystal with clear nepheline.
Location: Udersdorf, Rhineland-Palatinate, Germany. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Melilite Image

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Melilite: (Ca,Na)2(Al,Mg,Fe++)(Si,Al)2O7  
Monticellite: CaMgSiO4

Comments: Thin-section image of monticellite interstitial between unaltered melilite crystals (CanMin v. 41. p 1259).
Location: Skarns along the contact of a diorite intrusion at Oravit¸a, Banat, in Romania. Scale: Field of View 2.7 mm.
© Canadian Mineralogist

Meliphanite Image

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Meliphanite: (Ca,Na)2Be[(Si,Al)2O6(F,OH)]

Comments: Honey yellow, translucent sample of Meliphanite.
Location: Aroy, Langesundsfjorden, Norway. Scale: 3.6 X 5.3 cm.
© John Veevaert

Melliniite Image

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Melliniite: (Ni,Fe)4P  
Kamacite: alpha-(Fe,Ni)

Comments: Reflected-light image displaying an anhedral fragment of creamy-yellowish melliniite(1) associated with kamacite (2). AmMin, v91, p453.
Location: Northwest Africa 1054 acapulcoite. Scale: See Image.
© American Mineralogist

Melliniite Image

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Melliniite: (Ni,Fe)4P  
Nickelphosphide: (Ni,Fe)3P

Comments: Reflected light image of creamy-yellowish melliniite (1) and nickelphosphide (3). AmMin, v91, p453.
Location: Northwest Africa 1054 acapulcoite. Scale: See Image.
© American Mineralogist

Mellite Image

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Mellite: Al2[C6(COO)6]·16(H2O)

Comments: Specimen of crystalline mellite. Mellite is a naturally occurring organic mineral species.
Location: Csordakhut, Tatabanya, Hungary. Scale: 4 x 3 cm.
© John Veevaert

Melonite Image

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Melonite: NiTe2

Comments: Metallic foil of melonite.
Location: Cresson Mine, Cripple Creek, Teller County, Colorado, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Mendipite Image

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Mendipite: Pb3Cl2O2  
Crednerite: CuMnO2

Comments: Sooty, deep-black, granular to platy crednerite with mendipite.
Location: Mendip Hills, Somerset, England. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species
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