AmethystLa Boula quarry, Saint-Prix, Saint-Léger-sous-Beuvray, Saône-et-Loire, Burgundy, France
Photo: Alain TUEL Located 1.7 kilometers east of L'Argentolle.
Low-temperature vuggy quartz vein with wad-type undetermined manganese oxides.
This vein belongs to the fault structure of L'Argentolle main fault.
Hosts rocks : Upper Visean ryodacitic tuffas.
cf. VALETTE C.O. (1983) - Karts et filons à fluorine dans le faisceau synclinal du Morvan: le gisement d'Argentolle (Saône-et-Loire). Thèse 3ème cycle, Orléans, Doc. BRGM, n° 58, 299 p., 96 fig., 16 tab., 7 pl. h.t.
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