Large set of cubic crystals of green fluorite, a perfectly crystallized mineral. The edges measure up to 5 cm. Not common!
The Montroc mine is famous for its blue fluorite. Open-pit mine of fluorite (and accessory copper) in the Tarn, commune of Mont-Roc (or Montroc).
Specimen from the collection of Eric Asselborn.
Here is a video of this beautiful green fluorite from Montroc:
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