Arthurite

 
 
 
  
Origin: Majuba Hill mine, Pershing Co., South Dakota, USA
Sample size: about 6 x 2 x 2 cm, sprays to 1 mm
 
  
Origin: Majuba Hill mine, Pershing Co., South Dakota, USA
Sample size: about 5 x 5 x 2 cm, crystals less than 1 mm
 
  
 
  
Origin: Copper Stope, Majuba Hill mine, Pershing Co., Nevada, United States
Eaton Collection
Sample size: 4 x 3.5 x 1 cm (top), 5 x 4 x 2 cm (bottom)
 
  
 
  
 
  
 
  
 
  
 
  
Ex. DeVito collection
  
  
Bright green, spherical aggregates to 0.5 mm in diameter of micro crystaline arthurite. Associated with olive green pointed blades of olivenite to 2 mm long and sugary micro crystalline gypsum (?). Ex. DeVito collection
Origin: Majuba Hill mine, Pershing Co., Nevada, United States
Sample size: 7 x 4 x 2 cm (top), 4.5 x 3.5 x 2.5 cm (2nd row), 3 x 3 x 2.5 cm (3rd row), 10 x 8 x 4 cm (4th row), 7 x 6 x 4 cm (5th row), 6 x 4 x 2 cm (6th row), 5.5 x 3.5 x 2.5 cm (7th/8th/bottom row)
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

 
Origin: Majuba Hill mine, Pershing Co., Nevada, U.S.A.
Owner: Lou Perloff
Microscopic image
 
 
 

Photo courtesy of: 

Lou Perloff

Photo-Atlas of Minerals

 

Area 1 cm
Origin: Gunheath China Clay Pit, Stenalees, St Austell, Cornwall, England, UK
Owner: Steve Rust
 

Photo courtesy of: 

Steve Rust

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