Calcite Cleavage Rhomb, Utah

21.3.2017

Colorless, translucent, calcite cleavage rhomb from an unknown location in Utah.  Looking somewhat average under visible light, it shows an unexpectedly bright orange fluorescent response under short wave UV.  Under long wave UV it fluoresces a dim red/pink.  The size of this specimen is 59 x 50 x 32 mm, and it weighs 146 grams.

      Short Wave UV (254nm)

 

      Long Wave UV (365nm)                                                                      Visible Light

 

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