Boltwoodite

 
 
Origin: Rossing mine, Rossing, Namibia
Owner: Lou Perloff
Microscopic image
 
Origin: Spider mine, Honeycomb Hills, Juab Co., Utah, U.S.A.
Owner: Lou Perloff
Microscopic image
 

Photo courtesy of: 

Lou Perloff

Photo-Atlas of Minerals

 

Origin: New Method mine, Amboy, San Bernardino Co., California, U.S.A.
Owner: Milton Speckels
Microscopic image, 8.8 x
 

Photo courtesy of: 

Milton Speckels

Photo-Atlas of Minerals

 

  
 
 
  
 
  
 
  
 
  
 
  
Sprays of boltwoodite to 1 cm across are coated with calcite crystals
Origin: Rossing, Namibia
Sample size: 4 x 4.5 cm (top), 3.5 x 3 cm (2nd row), 6.5 x 4.5 cm (3rd row), 5.5 x 4.5 cm (4th row), 6 x 3.5 cm (5th row), 8 x 3 cm (6th row), 6.1 x 4 cm (bottom)
 

Photo courtesy of: 

John Veevaert, Trinity Mineral Co

Trinityminerals.com

 

  
Yellow micro crystals and globular coating on rock
Origin: Repete Mine, San Juqan Co., Utah, USA
Sample size: 1.5 x 5 cm
 

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

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