AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Mexico > Calcite (twinned crystals) on Amethyst

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

   

Calcite (twinned crystals) on Amethyst from Guanajuato, Mexico

 
Calcite (twinned crystals) on Amethyst from Guanajuato, Mexico

Calcite (twinned crystals) on Amethyst from Guanajuato, Mexico

Photo below under shortwave ultraviolet illumination:
Calcite (twinned crystals) on Amethyst from Guanajuato, Mexico

DESCRIPTION:No. 37490
Mineral:Calcite (twinned crystals) on Amethyst
Locality:Guanajuato, Mexico
Description:Scalenohedral white calcite crystals up to 40 mm long on a plate of purple amethyst quartz crystals up to 5 mm. The calcite has two twinned crystals symmetrically emerging from the sides, and fluoresces orange under UV illumination. Ex. John Albanese (1898-1969), ex. John Albanese, Jr.
Overall Size:5x3x3 cm
Crystals:3-40 mm
Archived: For reference only

 

 

 

 

 

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