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0 item @ $0.00  

Nickeline Rammelsbergite and Safflorite

#30649

Nickeline Rammelsbergite and Safflorite

#30649
Availability
Sold
Size
11.5 x 6 x 3 cm - Cabinet 
Formula
NiAs (RRUFF)
Locality
Bear Meadow Adit, Quartz Hill deposit, Ketchikan district, Alaska, United States
Tagged
Ore Minerals

All of the Cobalt specimens in this update probably originated from a study conducted in the 1960's. The results were summarized in the landmark publication "The Silver - Arsenides Deposits of the Cobalt-Gowganda Region, Ontario" edited by L. G. Berry with major contributions by W. Petruk and J. L. Jambor. On page 108, Petruk describes the five assemblages of mineralization at Cobalt. This specimen clearly fits into group #1, the Nickel-Arsenide assemblage characterized by complex botryoidal masses of Nickeline inter-growths with Breithauptite, Safflorite and Cobaltite. The minerals form concentric layers and it would be impossible to differentiate visually all the minerals without a thorough microprobe study. Looking closely at the ore, one can see the plumose-texture characteristic of all of these ore specimens. It is sawed flat and polished on one side.

Nickeline

Formula
NiAs 
Crystal System
Hexagonal 
Crystal Habit
Massive, Reniform, Columnar 
Cleavage
Imperfect, Imperfect, None 
Luster
Metallic 
Color
lead gray, grayish, copper, black 
Streak
brownish black 
Class
Hexagonal - Dihexagonal Dipyramidal 
Fracture
Uneven 
Hardness
5.5 

Data courtesy of Webmineral.

Collection
Phillips Collection
Mineralpedia
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On Dakota Matrix
Previously Sold Nickeline
On Dakota Matrix
Other Available Nickeline
WebMineral
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Mindat
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