Datolite

  
Datolite with xonotlite
Origin: Wessels Mine, near Kuruman, South Africa
Sample size: 6 x 4 x 3.2 cm
 

  

Datolite nodule
Origin: Upper Peninsula, Keweenaw Co., Michigan, U.S.A.
Sample size: 6.5 x 5.5 x 1.8 cm
 
  
Datolite with minor calcite
Origin: Bor Pit, Dalnegorsk, Primorskiy Kray, Russia
Sample size: 5.5 x 4.5 x 2.7 cm
 
  
Origin: Verchniy Mine, Dalnegorsk, Russia
Sample size: 8.0 x 6.7 x 5.5 cm
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

  
Light green crystal aggregates to 6mm acroos nicely located across orange calcite crystals with white tips.
Origin: Cox's Butte, Lane Co., Oregon, United States
Ex. DeVito Collection
Sample size: 6 x 5 x 2 cm
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

  
Origin: Dal'negorsk, Primorskiy Kray, Russia
Ex. John Barlow collection
Sample size: 35 x 17 x 10 mm
 
  
Origin: Charcas, San Luis Potosi, Mexico
Sample size: 6.9 x 4.5 x 2.2 cm
 
  
Origin: San Sebastian Mine, Charcas, San Luis Potosi, Mexico
Ex. Don Belsher collection
Sample size: 9 x 5.7 x 3 cm
 

Photo courtesy of: 

Dan Weinrich

Dealer in fine mineral specimens

 

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