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Formula: (Ni,Co,Fe)As3
Arsenide,
skutterudite subgroup,
perovskite supergroup. Forms a series with
skutterudite (Mindat).
Crystal System: Isometric
Specific gravity: 6.5 measured, 5.97 calculated
Hardness: 5½ to 6
Streak: Black
Colour: Tin white - silver grey
Common impurities: Fe,Bi,S
Environments
Nickelskutterudite is an arsenic-bearing mineral which occurs in moderate
temperature hydrothermal veins associated with
arsenopyrite,
silver, bismuth,
calcite, siderite,
baryte and quartz
(HOM).
Localities
At Ait Ahmane, Bou Azzer, Morocco, nickelskutterudite occurs on
nickeline associated with
clinosafflorite
(MinRec 38.5.385).
At Ightem, Bou Azzer, Morocco, nickelskutterudite occurs in a
dolomitic carbonate vein with
nickeline
(MinRec 38.5.385).
Nickelskutterudite from Bou Azzer -
Image
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