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Rammelsbergite & Tremolite

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RMM571457

Rammelsbergite & Tremolite

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Description Tabs

Description
Locality: 
Peterson Lake Mine, Coleman Township, Cobalt, Timiskaming District, Ontario, Canada
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.7 × 2.7 × 2.5 cm
Description

Bladed micro-crystals of rammelsbergite create a textured surface on botryoids of nickel arsenides. Somewhat larger, silvery crystals of skutterudite are scattered about. 

When the specimen was etched from dolomite, pale grey-green blades of tremolite were revealed. 

The ID of the rammelsbergite has been confirmed. See the analysis tab for the report.

Mineral Data
What's on the rock

Rammelsbergite

Formula: 
NiAs2
Strunz: 
2.EB.15a
Hardness: 
5.5 - 6.0
Type Locality: 
Schneeberg District, Erzgebirge, Saxony, Germany

Tremolite

Formula: 
☐{Ca2}{Mg5}(Si8O22)(OH)2
Strunz: 
9.DE.10
Hardness: 
5.0 - 6.0
Streak: 
White
Type Locality: 
Campolungo, Piumogna Valley, Leventina, Ticino (Tessin), Switzerland
Analysis
Analysis Report - only: Rammelsbergite & Tremolite

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