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Rammelsbergite

#PD42140

Rammelsbergite

#PD42140
Availability
Sold
Size
5 x 4 x 3.5 cm - Miniature 
Formula
NiAs2 (RRUFF)
Locality
Mohawk mine, Keweenaw Co., Michigan, United States
Tagged
nickel

Massive silvery or tin white metallic mass of Rammelsbergite nicely represented in this specimen. There are definitely other arsenides in this specimen and also on the side are spherical clusters of a copper or nickel secondary.

Rammelsbergite

Formula
NiAs2 
Crystal System
Orthorhombic 
Crystal Habit
Prismatic, Radial, Massive - Granular 
Cleavage
Indistinct, None, None 
Luster
Metallic 
Color
tin white, reddish white 
Streak
grayish black 
Class
Orthorhombic - Dipyramidal 
Fracture
Uneven 
Hardness
5.5 

Data courtesy of Webmineral.

Collection
Phillips Collection

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