Exceptional specimen of scalenohedral with twinned crystals calcite, perfectly automorphic, airy, brilliant, and without any defects. Very nice presentation, among the best of French calcite crystals.
Two large twinned crystals (14x6x5,5 cm) are perfectly arranged on a black gangue covered with fine white dolomite crystals.
An absolutely perfect specimen in every respect.
Calcite crystals from the old mine (or gallery) of Trèves in the Gard department.
Here is a video of this incredible calcite with crystals with twin from the Trèves mine:
This post is also available in: French