Mcguinnessite

  
Bright blue micro spheres of mcguinnessite to approximately 0.45 mm on a green serpentine slicken side. Ex. Eaton collection
  
Origin: Basic Refractories Mine, Gabbs, Nye Co., Nevada, United States
Sample size: 4 x 1.5 x 2 cm (top/2nd row), 2.5 x 2 x 1.5 cm (3rd/bottom row)
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

  
Origin: Red Mountain, Mendocino Co., California, U.S.A.
Sample size: 2 x 4 x 2 cm
 

Photo courtesy of: 

Dan Weinrich

Dealer in fine mineral specimens

 

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