Mineral description : Rammelsbergite

Rammelsbergite from Vimbodi, Portugal.

Mineral class	Sulphides : Nickeline - Cobaltine - Skutterudite group.
Chemical formula	NiAs2
Crystal system	Orthorombic.
Habitus	Crystals prismatic, radial. Also as massive to granular.
Cleavage	Indistinct, uneven fracture.
Hardness	5.5
Density	7.1
Color	Tin white to reddish white. Opaque.
Streak	Black
Luster	Metallic.
Description
Occurance
Associates
Notes	Hard to separate from Safflorite. Named after the german scientist K. F. Rammelsberg (1812-1899).
Locations	A rare mineral in Sweden. Adak and Lainijaur, Skellefteċ mining field. Small quantities with safflorite.

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