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RM3652   Uranophane and calcite
Ca(UO₂)₂(SiO₃OH)₂·5H₂O
  -  9. Silicates

Uranium specimens from this Mexican mine located in northern Chihuahua are rare on the market. This specimen shows numerous acicular crystals of this uranyl silicate, brilliant, transparent and intensely colored. They are disposed in vugs within the calcite matrix.

Size: 5 x 3.5 x 2.4 cm.
Col. F. Coune (Belgique)
Presents radioactive activity.
45 €