Quelques-uns des principaux sujets de Géoforum
![]() ▲ Bourse minéraux et fossiles de Sainte Marie aux Mines (Alsace) - 21>25 juin 2023 ▲ |
Fluorine de La Barre (63) UV
Cube de fluorine d’Auvergne sous les rayons UV
Copyright
© Patrick Lachassagne
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