Cassiterite, Piriac, Loire-Atlantique.


Cassiterite crystals (tin mineral) in a gangue rich in white mica (muscovite). Discovered in the cassiterite quartz vein at Piriac (Piriac-sur-Mer) in the Loire Atlantique department.

Specimen from the Eric Asselborn collection, from the Ridjisky collection, a mining prospector of Russian origin, who collected it during BRGM (Bureau de Recherches Géologiques et Minières) surveys in the 1950s.

Very good mineral for the locality.

Here is a video of these cassiterite crystals from Piriac, Loire Atlantique :