Goldfieldite

Vuggy matrix specimen with lead gray massive goldfieldite, gold and possible other tellurides
Silvery grey grains to 1 mm with other sulfides.
Origin: Mohawk mine, Goldfield, Esmeralda Co., Nevada, United States (type locality)
Sample size: 7 x 4 x 4 cm (top), 10 x 4 x 2 cm (bottom)
 
  
Steel grey grains to 2-3 mm associated with chalcopyrite in quartz matrix
Origin: Tunnel Extension #4, Marysvale, Piute Co., Utah, United States
Sample size: 4 x 4 x 3 cm
 
  
White matrix with grey grains less than 0.1 mm.
Origin: White Rock shaft, Goldfield, Esmeralda Co., Nevada, United States (type locality)
Sample size: 5 x 3 x 2 cm
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

Origin: Combination Mine, Goldfield, Esmeralda Co., Nevada, USA
Sample size: micromount
 

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

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