Tetradymite

Sulfide matrix with predominate gray tetradymite
Origin: Ouray Co., Coloradoa, United States
Erling Collection, Label states "Foote Mineral Co. c. 1900"
Sample size: 3.5 x 3 x 1 cm
 
  
Silvery metallic, brilliant thin veins of tetradymite with associated gold grains. There is a minute pocket with a quartz crystal. Behind the quartz is what appears to be a "cone" of native copper.
Origin: Kokomo, Central City district, Gilpin Co., Colorado, United States
Ex. Kidwell collection
Sample size: 3 x 2 x 2 cm
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

  
Origin: Mångfallberget, Boliden, Skellefteå, Västerbotten, Sweden
Sample size: 9 x 5.5 x 4.1 cm
 
  
Metallic gray masses of tetradymite on quartz-rich matrix
Origin: Organ Mtns., Dona Ana Co., New Mexico, U.S.A.
Sample size: 4.6 x 3.4 x 3.2 cm
 
  
Metallic tetradymite on quartz-rich matrix
Origin: Yellow Jacket Mine, Trinity Co., California, U.S.A.
Sample size: 7.3 x 3.5 x 2.3 cm
 

Photo courtesy of: 

Dan Weinrich

Dealer in fine mineral specimens

 

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