AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from England > Cassiterite (twinned crystals) on Topaz

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Online Mineral Museum Archive of Mineral Photographs and Mineral Descriptions from John Betts - Fine Minerals.com and Allminerals.com

   

Cassiterite (twinned crystals) on Topaz from St. Agnes District, Cornwall, England

 
Cassiterite (twinned crystals) on Topaz from St. Agnes District, Cornwall, England

Cassiterite (twinned crystals) on Topaz from St. Agnes District, Cornwall, England

Cassiterite (twinned crystals) on Topaz from St. Agnes District, Cornwall, England

Cassiterite (twinned crystals) on Topaz from St. Agnes District, Cornwall, England

DESCRIPTION:No. 81725
Mineral:Cassiterite (twinned crystals) on Topaz
Locality:St. Agnes District, Cornwall, England
Description:Large lustrous black cassiterite crystals to 11 mm on matrix coated with limonite-stained lustrous transparent colorless topaz crystals to 2.5 mm. The cassiterite crystals are contact twinned with well defined twin planes visible.
Overall Size:6.5x4x3.5 cm
Crystals:1-11 mm
Archived: For reference only

 

 

 

 

 

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