Alunite

  
 
  
 
  
 
  
 
  
 
Origin: Chinkuahshih Mine, Taiwan
Sample size: 7.5 x 6.5 x 2.5 cm (top), 6 x 5 x 2 cm (2nd/3rd row), 4.5 x 4.5 x 1.75 cm (4th row left), 6 x 3.5 x 1.5 cm (4th row right), 8.5 x 4.5 x 1.5 cm (5th/6th row), 9 x 8 x 2 cm (7th row), 6 x 4 x 2 cm (bottom)
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

  
Origin: Wendy pit near El Indio mine, Region IV, Chile
Ex. Eaton Collection
Sample size: 3 x 3 x 3 cm
 
Origin: Tolfa near Rome, Italy
Ex. Eaton Collection
Sample size: 4 x 3 x 3 cm
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

Origin: Grube Käusersteimel, Kausen, Siegerland, Germany
Sample size: micromount
 

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

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