Road works on a lava (tephrite) flow.
References:
Barrier, D., Devolle, J.-C., Médard, P, Naud, E. & Pourtier, G. (2009): Si l'amesite m'était Comté... ou pas d'haüyne à Prudeux, Le Cahier des Micromonteurs, 103, 3-8.
Mineral List:6 entries listed. 5 valid minerals.
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