Brassite

  
Brassite with rösslerite
Origin: Jachymov (St. Joachimstal),  former CSSR
Sample size 13 x 18 x 2 mm
Sample owner: Ray Frost
 

Photo courtesy of: 

Theo Kloprogge

 

  
White fibrous indiscernable crystals covering much of specimen. XRD verified by Geological Survey of Canada
Origin: Nipissing mine, Cobalt, Ontario, Canada
Sample size: 4 x 3 x 1 cm
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

Colourless to white crystals and crusts of brassite on arsenic
Origin: Jachymov, Bohemia, Czech Republic
Sample size: thumbnail
 

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

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