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La Barre Mine (La Martinèche Mine), Saint-Jacques-d'Ambur, Pontgibaud, Puy-de-Dôme, Auvergne, France

Photo: G. Maurice
Latitude: 45°53'25"N
Longitude: 2°45'56"E
Ancient fluorite mine which operated a large fluorite-quartz vein hosted in migmatites. The operation, from 1918 until 1948, produced 80 000 tons of ore. Today, adits are closed (since 2000) and only dumps remain but their search is prohibited... This deposit is well-known for its nice fluorite specimens especially blue crystals (sometimes with yellow "phantoms") on quartz.

Mineral List

Baryte
Chalcopyrite
Fluorite
Opal
Quartz
var: Chalcedony


6 entries listed. 5 valid minerals.

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References

A.CHERMETTE (1963) LE SPATH FLUOR FRANCAIS EN 1952
L.DUPARQUE (1931)SUR LES GSTS.DE FLUORINE DE LA MARTINECHE ET DES ISSERTS
RAPPORTS A.1786 (1961),SGN/GMX/GIT 601 (1979)
RESSOURCES MIN.FRANCAISES,TOME 3 (1978) LES GSTS DE FLUORINE
J.J.PERICHAUD (1986) OU TROUVER LES MINERAUX D'AUVERGNE, TOME 1

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Copyright © Jolyon Ralph and Ida Chau 1993-2012. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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