Idaite

  
Bluish-purplish grains in matrix
Origin: near Winston, Sierra Co., New Mexico, United States
Sample size: 4 x 2 x1.5 cm
 
  
Dark red, dull grains in calcite matrix
Origin: Clara mine, Oberwolfach, Baden-Wurttemberg, Germany
Ex. Kidwell collection
Sample size: 5 x 3.5 x 3 cm
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

  
bronzish metallic masses of idaite are sparse upon a  matrix. This is a copper iron sulfide and its current status with IMA is currently in doubt.
Origin: Fingerkulla, Tunaberg, Nyköping, Södermanland, Sweden
Sample size: 5.9 x 5.6 x 3.2 cm
 

Photo courtesy of: 

Dan Weinrich

Dealer in fine mineral specimens

 

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