| | Journal (article/letter/editorial) | Karsts et filons h fluorine dans le faisceau synclinal du Morvan: le gisement d'Argentolle (Sa6ne-et-Loire...(Sa6ne-et-Loire, France). Th~se doct. sptcialitt, Univ. Orltans, Doc. BRGM n ° 58, 1 vol., 1983, 299 pp., 7 pl.,...N80°E-trending veins in Stephanian microgranites (Le Bois du Sureau) and - N160°E-trending veins and karstic cavities...cavities in a calcareous lens (Rocher du Boeuf). Four successive stages are identified, i.e., 1. silicification... and kaolinite with calcite and hematite. Clay minerals and hematite indicate a more complex origin than |
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