AZURITE AND SELENITE - Arizona, USA
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Ray Mine, Pinal County, Arizona, USA
Ray Mine, Pinal County, Arizona, USA
A curious specimen consisting of rounded alluvial pebbles coated with tiny selenite crystals that have coloured blue by the copper mineral azurite.
Formed downstream from the mine, this is an unusual example of post-mining mineralisation.
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Size: approx. 7 x 6 x 5.5 centimetres
Weight: 133 grams