Trébeurdenite, Mössbauerite
Penvern, Trébeurden, Lannion, Côtes-d'Armor, Brittany, France
Blue-grey masses of trébeurdenite and mössbauerite (both species are closely linked, please see Mills, S.J., and al. (2012): Nomenclature of the hydrotalcite supergroup: natural layered double hydroxides. Mineralogical Magazine, 76, 1289-1336)
This specimen was freshly extracted from the type locality at low tide.
FOV ~2,5 m
Photo : Vincent ...
© Vincent Bourgoin 2013