La Grolle Marqueriolle, Courgoul, Issoire, Puy-de-Dôme, Auvergne, France

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Vein located along Rio Fourche (affluent on right bank of La Couze de Valbeleix ravine), on North slope of the ravine, 500 meters upstream of the confluence.

Host rocks : mylonitized cordierite anatexites.

Mineral List:

Baryte
Bournonite
Calcite
var: Ferroan Calcite
Chalcopyrite
Covellite

Freibergite
Galena
Graphite
Marcasite
Pyrite

Quartz
Rutile
Siderite
Sphalerite

14 entries listed. 13 valid minerals.

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