Lenses of serpentinites located 1 kilometer W of Traignac and 500 meters S of Promeyrat, on both banks of the Traignac Brook (Leyvaux Brook). The serpentinite lenses are included in biotite leptynites and amphibolites, with numerous crosscuting granite/pegmatite veins. The main serpentinite lens, on the left bank, contains veins of silica-poor corundum-bearing plagioclasites (plumasites).
F.H. Forestier : "Les Péridotites Serpentinisées en France, Groupe I, Fascicule IV, Bassin du Haut Allier", BRGM, 1964
References
F.H. Forestier : "Les Péridotites Serpentinisées en France, Groupe I, Fascicule IV, Bassin du Haut Allier", BRGM, 1964
Mineral List
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