Description
Sawed specimen showing bournonite, chalcopyrite and remarkable dendritic native silver crystals in a quartz gangue.
The silver crystals appear to be perimorphosing around the bournonite crystal (broken, scarred).
Minerals from the Rabasse mine at Avène in the Hérault department.
This mine, closed in 1954, was mined for lead, zinc, silver and pure arsenic. Unusual!
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