Grayite
http://dbpedia.org/resource/Grayite an entity of type: Thing
La grayita és un mineral de la classe dels fosfats. Rep el nom en honor d'Anton Gray, geòleg en cap de la Kennecott Copper Corporation i assessor de l'Autoritat d'Energia Atòmica del Regne Unit.
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Grayite, ThPO4·(H2O), is a thorium phosphate mineral of the Rabdophane group first discovered in 1957 by S.H.U. Bowie in Rhodesia. It is of moderate hardness occurring occasionally in aggregates of hexagonal crystals occasionally but more commonly in microgranular/cryptocrystalline masses. Due to its thorium content, grayite displays some radioactivity although it is only moderate and the mineral displays powder XRD peaks without any metamict-like effects. The color of grayite is most commonly observed as a light to dark reddish brown but has also been observed as lighter yellows with grayish tints. It has a low to moderate hardness with a Mohs hardness of 3–4 and has a specific gravity of 3.7–4.3. It has been found in both intrusive igneous and sedimentary environments.
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Grayita fosfato motako minerala da.
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La grayite est un minéral composé de phosphate de thorium hydraté, découvert en Rhodésie en 1957 par S. H. U. Bowie et nommé en l’honneur du géologue Anton Gray. On la trouve le plus souvent dans des masses microgranulaires, mais occasionnellement en agrégats de cristaux hexagonaux. Sa couleur est le plus souvent un marron plus ou moins foncé avec des teintes légères de rouge, mais aussi une teinte plus jaunâtre avec un aspect grisâtre. Sa dureté est moyenne. En raison de sa composition contenant du thorium, elle est légèrement radioactive.
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La grayite è un minerale.
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Grayita
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Grayite
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Grayita
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Grayite
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Grayite
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Grayite
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Grayite
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48120666
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1072371611
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8
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a = 6.957
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c = 6.396 [Å]; Z = 3
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Rhabdophane group
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Trapezohedral
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Pale yellow, yellow, yellowish gray, often a dark reddish brown
<gramPerCubicCentimetre>
6.41
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25
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P6222 or P6422
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La grayita és un mineral de la classe dels fosfats. Rep el nom en honor d'Anton Gray, geòleg en cap de la Kennecott Copper Corporation i assessor de l'Autoritat d'Energia Atòmica del Regne Unit.
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Grayite, ThPO4·(H2O), is a thorium phosphate mineral of the Rabdophane group first discovered in 1957 by S.H.U. Bowie in Rhodesia. It is of moderate hardness occurring occasionally in aggregates of hexagonal crystals occasionally but more commonly in microgranular/cryptocrystalline masses. Due to its thorium content, grayite displays some radioactivity although it is only moderate and the mineral displays powder XRD peaks without any metamict-like effects. The color of grayite is most commonly observed as a light to dark reddish brown but has also been observed as lighter yellows with grayish tints. It has a low to moderate hardness with a Mohs hardness of 3–4 and has a specific gravity of 3.7–4.3. It has been found in both intrusive igneous and sedimentary environments.
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Grayita fosfato motako minerala da.
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La grayite est un minéral composé de phosphate de thorium hydraté, découvert en Rhodésie en 1957 par S. H. U. Bowie et nommé en l’honneur du géologue Anton Gray. On la trouve le plus souvent dans des masses microgranulaires, mais occasionnellement en agrégats de cristaux hexagonaux. Sa couleur est le plus souvent un marron plus ou moins foncé avec des teintes légères de rouge, mais aussi une teinte plus jaunâtre avec un aspect grisâtre. Sa dureté est moyenne. En raison de sa composition contenant du thorium, elle est légèrement radioactive.
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La grayite è un minerale.
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Moderate with max at δ = 1.660
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40.04
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Semitransparent
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May fluoresce green or yellow under short wave UV
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Cryptocrystalline Aggregate
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Gry
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Resinous to waxy to greasy
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3
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Uniaxial
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nα = 1.66
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nβ = 1.69
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6364
