Calcite

  
Twin
Origin: Dalnegorsk, Primorskiy Kray, Russia
Sample size: 4.2 x 2.5 x 1.5 cm
 
  
Calcite pseudomorph after glauberite
Origin: Camp Verde District, Yavapai Co., Arizona, U.S.A.
Sample size: 4.5 x 3.8 x 3.6 cm
 
  
  
Calcite on mottramite
Origin: Tsumeb Mine, Tsumeb, Namibia
Sample size: 4.0 x 3.1 x 2.7 cm
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

  
Calcite on sphalerite
Origin: Elmwood mine, Smith Co., Tennessee
Sample size: 14 x 11.5 x 14 cm
 
  
Origin: near Lan Tan, Guangxi Province, China
Sample size: 14 x 11 x 19 cm
 
  
 
  
Origin: Cumberland mine, Smith Co., Tennessee, U.S.A.
Sample size: 23 x 19 x 14 cm  (top/2nd row), 25 x 12 x 11 cm (3rd/4th row)
 
  
Origin: Nikolaevskiy mine, near Dal'negorsk, Rudnaja River Valley, Primorskiy Kray, Russia
Sample size: 16 x 11 x 10 cm matrix
 
  
Origin: Nan Jing, Hunan Province, China
Sample size: 15 x 11 x 11 cm
 
  
Calcite with dioptase
Origin: Tsumeb, Namibia
Ex. Willard Perkin collection
Sample size: 26 x 21 x 8 mm
 

Photo courtesy of: 

Dan Weinrich

Dealer in fine mineral specimens

 

  
Origin: Fall River Co., South Dakota, United States
Ex. Grenier collection
Sample size: 8 x 8 x 6 cm
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

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