Köttigite

  

 

  

 

  

Origin: Mina Ojuela, Mapimi, Durango, Mexico

Sample size: 3 x 2.5 x 1 cm with grayish blue metallic, bladed crystals to 5 mm (top), 4 x 4 x 1 cm (2nd row), 6 x 5 x 2.5 cm (bottom)

 

  

Cobalt bearing köttigite

Origin: prospect at far south end of the Clan Alpine Range, Churchill Co., Nevada, United States
Eaton Collection

Sample size: 3 x 2 x 1.5cm

 

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Origin: Ojuela mine, Mapimi, Durango, Mexico

Owner: Lou Perloff

Microscopic image

 

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Photo-Atlas of Minerals

  

This specimen has heavy coverage of the rare mineral köttigite as bluish gray sprays of crystals. Also found are sprays of legrandite. Almost all of the legrandite crystals are fully terminated with the largest two sprays comprised of fully terminated crystals. There is a thin oxide coating on the surface.

  

Origin: Oujela Mine, Mapimi, Durango, Mexico

Sample size: 8.2 x 5.3 x 2.7 cm (top/2nd row), 3.8 x 2.6 x 1.7 cm (3rd/bottom row)

 

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Origin: Ojuela mine, Mapimí, Mun. de Mapimí, Durango, Mexico

Sample size: 3 mm crystal group

Owner: Steve Rust

 

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