The Marmaissat claim extends into the Puy-de-Dôme (near Apchat) and Haute-Loire departments (Blesle, Torsiac).
The veins are located in the Auze ravine, 3 km West of Lanau village (Haute-Loire). The Le Treuil vein is located on its north slope, 250 meters east of the main pit, along the path coming from Marmaissat.
Quartz vein, clay, breccias with elements of siderite and ferroan calcite.
Host rocks : Leptynites and biotite-sillimanite gneisses.
Mineral List:11 entries listed. 9 valid minerals.
The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database!
