Volborthite

  

Volborthite on chrysocolla

Origin: Copiapo, Atacama Desert, Chile

Sample size: 8 x 5 x 2 cm

 

  

Origin: Monument Valley, Apache Co., Arizona

Sample size: 5.3 x 4.4 x 3.1 cm

 

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Micro fine yellow crusts on black chalcocite matrix

Origin: near Campbell River, Vancouver Island, British Columbia, Canada
Erling Collection

Sample size: miniature

 

  

Yellow - green flakes to 3 mm on matrix

Origin: Menzies Bay on Vancouver Island, British Columbia, Canada

Sample size: 5 x 3 x 1 cm

 

  

Origin: Leeds, Colorado, United States

Ex. Kaar collection

Sample size: 6 x 4 x 2 cm

 

  

 

  

  

Grass green rosette like crystal aggregates to about 0.3 mm

Origin: Silver Reef mine, Washington Co., Utah, United States

Sample size: 6 x 5 x 3 cm (top), 8.5 x 6 x 3 cm (2nd/bottom row)

 

  

A green crust that occurs on the deep green atacamite crystals. The atacamite crystals are acicular and approximately 3 mm long.

Origin: Copiapo, Atacama Prov., Chile

Ex. DeVito collection

Sample size: 6 x 3.5 x 1.5 cm

 

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Origin: Emmelberg, Üdersdorf, Eifel, Germany

Sample size: thumbnail

 

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