Calcite

  

 

 

  

  

Calcite with pyrite

  

 

  

 

  

 

  

Calcite with chalcopyrite

  

 

  

 

  

Origin: Milliken (Sweetwater) mine, Viburnum Trend, Reynolds Co., Missouri, U.S.A.

Sample size: 7 x 5 x 3 cm (top), 5 x 2.5 x 1.7 cm (2nd row), 5 x 2.5 x 8 cm (3rd row), 8.5 x 2.5 x 5 cm (4th row), 8 x 4.5 x 4.5 cm (5th row), 6 x 4 x 5.5 cm (6th row), 6 x 3.5 x 4.5 cm (7th row), 8.5 x 6 x 4 cm (8th row), 7.5 x 5 x 4.5 cm (9th row), 5 x 5 x 5 cm (10th row), 5.5 x 4.5 x 5.5 cm (bottom)

 

   

Matrix covered by intermixed colourless crystalline calcite and gypsum. There are very pale purple to colourless cubic crystals of fluorite scattered about.

Origin: Santa Eulalia District, Mun. de Aquiles Serdán, Chihuahua, Mexico

Sample size: 6 x 8.3 x 5 cm

 

Dan Weinrich

Dealer in fine mineral specimens