Cassiterite

  

Cyclic twin cassiterite with a small arsenopyrite crystal behind it

Origin: Panasqueira, Portugal

Ex. Joe Polityka collection

Sample size: 2.5 x 1.7 x 1.6 cm

 

Photo courtesy of: 

 

  

  

Bright lustrous black twinned sharply formed crystals of cassiterite to 18 mm in size are thickly covering the front side of a muscovite matrix

  

  

Twin

Origin: Mt Xuebaoding (Mt Xuebaodiang), Huya, Pingwu District, Mianyang Prefecture, Sichuan Province, China

Sample size: 5.3 x 3.3 x 5.5 cm (top/2nd row), 3.3 x 3.6 x 3.8 cm (3rd/bottom row)

 

  

Cassiterite on quartz

Origin: Cathida Mine, Emmaville, Gough Co., New South Wales, Australia

Sample size: 3 x 4 x 4.7 cm

 

Photo courtesy of: 

Dan Weinrich

Dealer in fine mineral specimens

 

  

Origin: Miask, Urals, Russia

Sample size: 5.1 x 3.7 x 3.0 cm

 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

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