Cervandonite
http://dbpedia.org/resource/Cervandonite an entity of type: Thing
La cervandonita-(Ce) és un mineral de la classe dels silicats. Rep el nom de la serralada Cervandone, a la frontera italo-suïssa, on es troba la localitat tipus per aquesta espècie.
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Cervandonite is a rare arsenosilicate mineral. It has a chemical formula (Ce,Nd,La)(Fe3+,Fe2+,Ti4+,Al)3SiAs(Si,As)O13 or (Ce,Nd,La)(Fe3+,Fe2+,Ti,Al)3O2(Si2O7)(As3+O3)(OH). It has a monoclinic crustal structure with supercell (Z=6), the crystal structure was established as a trigonal subcell, with space group R3m and a = 6.508(1)Ǻ, c = 18.520(3) Ǻ, V 679.4(2) Ǻ3, and Z=3. It was first described by Buhler Armbruster in 1988, but it has proven to be problem due to the extreme scarcity of single crystals and its unusual replacement of silicon and arsenic. Cervandonite is named after the location where it was first described, Pizzo Cervandone (Scherbadung), Italy in the Central Alps.
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Cervandonita-(Ce) silikato motako minerala da.
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La cervandonite-(Ce) è un sorosilicato trovato in Italia ai piedi del monte Cervandone a cui deve il nome. Si trova esclusivamente nel preparco dell'alpe Devero.
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Cervandonite
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Cervandonita-(Ce)
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Cervandonita-(Ce)
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Cervandonite-(Ce)
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Cervandonite
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Cervandonite
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25269913
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1067322066
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Brownish black
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9
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Brittle
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Cervandonite is a classic and very sought after mineral from Binntal.
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Black
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4.9
<second>
180.0
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La cervandonita-(Ce) és un mineral de la classe dels silicats. Rep el nom de la serralada Cervandone, a la frontera italo-suïssa, on es troba la localitat tipus per aquesta espècie.
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Cervandonite is a rare arsenosilicate mineral. It has a chemical formula (Ce,Nd,La)(Fe3+,Fe2+,Ti4+,Al)3SiAs(Si,As)O13 or (Ce,Nd,La)(Fe3+,Fe2+,Ti,Al)3O2(Si2O7)(As3+O3)(OH). It has a monoclinic crustal structure with supercell (Z=6), the crystal structure was established as a trigonal subcell, with space group R3m and a = 6.508(1)Ǻ, c = 18.520(3) Ǻ, V 679.4(2) Ǻ3, and Z=3. It was first described by Buhler Armbruster in 1988, but it has proven to be problem due to the extreme scarcity of single crystals and its unusual replacement of silicon and arsenic. Cervandonite is named after the location where it was first described, Pizzo Cervandone (Scherbadung), Italy in the Central Alps.
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Cervandonita-(Ce) silikato motako minerala da.
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La cervandonite-(Ce) è un sorosilicato trovato in Italia ai piedi del monte Cervandone a cui deve il nome. Si trova esclusivamente nel preparco dell'alpe Devero.
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{001} Indistinct
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Translucent to opaque
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Conchoidal
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Aggregates and rosettes of tabular crystals
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Adamantine
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Biaxial
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Yellowish, reddish brown to black
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nα = 1.990 nγ = 2.000
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7116