Description
Bournonite crystal on siderite crystals from Saint-Pons Alpes-de-Haute-Provence, France). In the 1980s and 1990s, some fabulous discoveries of rare thiosalts of lead and copper were made in various siderite lenses contained in Callovo-Oxfordian marls in Saint-Pons.
The main bournonite crystal is about 1 cm.
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