Metastibnite

  
Reddish micro metastibnite coating a 3.5 x 4 cm vug with minor stibnite
Origin: Pereta mine, Grosseto, Tuscany, Italy
Sample size: 7.5 x 7.5 x 4.5 cm
 

Photo courtesy of: 

Dan Weinrich

Dealer in fine mineral specimens

 

 
Red coating on siliceous sinter. Formed by fumarolic action
Origin: Steamboat Springs, Washoe County, Nevada, U.S.A.
Sample size: 7 x 7 cm (top), 4 x 6.5 cm (bottom)
 

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

  
Origin: San Jose Mine, Oruro, Dept. Oruro, Bolivia
Ex. Kosnar collection
Sample size: 9.0 x 6.2 x 4.1 cm
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

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