Abstract
The Costabonne and Traversella scheelite-bearing skarns are compared on the basis of associated igneous rock composition, early metasomatic columns, parageneses of the scheelite and differences in the fluid composition. Both series of intrusive rocks are of calc-alkaline affinity and are the result of a process of fractional crystallization. Thèse rocks are of granitic composition at Costabonne and of dioritic composition at Traversella. The early metasomatic columns are similar: dolomite/forsterite + calcite/pyroxene/garnet, but the silicates are richer in Fe and Mn at Costabonne. At Traversella, Fe is introduced during a later hydrothermal stage (magnetite). Two generations of scheelite are found at Costabonne, one associated with the garnet and a second in association with amphibole, quartz and calcite as an alteration product of pyroxenes. At Traversella, scheelite is introduced during the hydrothermal stage by replacement of calcite in the outer zones. Thèse differences in scheelite distribution may be explained by differences in fluid compositions under similar pressure and temperature conditions. At Costabonne, activities of Ca and Si were higher and activities of Mg and W were lower than at Traversella.
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References
Autran A, Fonteilles M, Guitard G (1970) Relations entre les intrusions de granitoïdes, l’anatexie et le métamorphisme régional, considérées principalement du point de vue du rôle de l’eau: cas de la chaîne hercynienne des Pyrenées-Orientales. Bull Soc Geol Fr 7, 12, (4): 673–731
Auwera J Vander (1985) Iron and tungsten skarns at Traversella (Italian Alps). Fortschr Mine Bd 63 (1): 244
Besson M, Fonteilles M (1974) Relations entre les comportements contrastés de l’alumine et du fer dans la differentiation des series tholéitiques et calco-alcaline. Bull Soc Fr Miner Crist 97:443–449
Cocherie A (1984) Interaction manteau-croûte: son rôle dans la genèse d’associations plutoniques calco-alcalines, contraintes géochimiques (éléments en traces et isotopes du strontium et de l’oxygène). Documents BRGM 90
Compagnoni R, Dal Piaz GV, Hunziker JC, Gasso G, Lombardo B, Williams PF (1977) The Sesia-Lanzo zone, a slice of continental crust with alpine high pressure-low temperature assemblages in the western Italian Alps. Rend Soc It Mine Pet 33:281–334
Dubru M (1986) Pétrologie et géochimie du marbre à brucke et des borates associés au gisement de tungstène du Pic de Costabonne (P.O. France). Thèse, Université de Louvain, Louvain-la-Neuve
Einaudi MT, Burt DM (1982) Introduction, terminology, classification and composition of skarn deposits. Econ Geol 77:745–754
Guitard G (1970) Le métamorphisme hercynien mésozonal et les gneiss oeillés du massif du Canigou (Pyrenées Orientales). Mém BRGM 63
Guitard G, Laffitte P (1958) Les calcaires métamorphiques et les skarns du pic de Costabonne (Pyrénées Orientales). Sci Terre 6:59–131
Guy B (1980) Etude géologique et pétrologique du gisement de Costabonne. In: Minéralisations liées aux granitoïdes. II. La genèse des skarns à tungstène dans les Pyrenées. Mém BRGM 99
Guyader R Le (1982) Elements-traces dans les skarns à scheelite et les roches associées à Costabonne (Pyrenées orientales, France). Thèse, Université de Paris VI, Paris
Hunziker JC (1974) Rb-Sr and K-Ar age determination and the alpine tectonic history of western Alps. Mém Inst Geol Mine Univ Padoue 31:1–55
Kennedy WQ (1931) The igneous rocks, pyrometasomatism and ore deposition at Traversella, Piedmont, Italy. Schweiz Mine Pet Mitt 11:77–138
Korzhinskii DS (1959) Physicochemical basis of the analysis of mineral paragenesis. Consultants bureau, New York, 142 pp
Korzhinskii DS (1970) The theory of metasomatic zoning. Clarendon, Oxford
Marcke de Lummen G van, Verkaeren J (1986) Physico-chemical study of skarn formation in pelitic rocks, Costabonne peak area, eastern Pyrenees, France. Contrib Mine Pet 93:77–88
Müller F (1912) Die Erzlagerstätten von Traversella im Piedmont, Italien. Prakt Geol Bd 20:209–240
Nockolds SR (1947) The relation between chemical composition and paragenesis in the biotite micas of igneous rocks. Am J Sci 245:401–420
Pitcher WS (1983) Granite type and tectonic environment. In: Hsü KJ (ed) Mountain building processes. Academic Press, London, pp 19–40
Treuil M, Joron JL (1975) Utilisation des éléments hygromagmatophiles pour la simplification de la modelisation quantitative des processes magmatiques. Exemples de l’Afar et de la dorsale océanique. Rend Soc It Mine Pet 31:125–174
Trommsdorff V, Evans BW (1977) Antigorite-ophicarbonates: contact metamorphism in Valmolenco, Italy. Contrib Mine Pet 62:301–312
Varenne JL (1983) Etude des inclusions fluides dans la scheelite de l’indice tungstifère de Costabonne. Travail d’option. ENSM Saint-Etienne, 85 pp
Venturelli G, Thorpe RS, Dal Piaz GV, Moro A del, Potts PJ (1984) Petrogenesis of calc-alkaline, shoshonitic and associated ultrapotassic oligocene volcanic rocks from the northwestern Alps, Italy. Contrib Mine Pet 86:209–220
Zharikov VA (1970) Skarns, Part 1. Int Geol Rev 12:541–559
Zuchetti S (1966) Studi sul giacimento di Traversella (Torino). I corpi minerallizzati a scheelite. Symposium internationale sui giacimenti minerari delle alpi. Trente 3:929–960
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Dubru, M., Auwera, J.V., van Marcke de Lummen, G., Verkaeren, J. (1988). Distribution of Scheelite in Magnesian Skarns at Traversella (Piemontese Alps, Italy) and Costabonne (Eastern Pyrenees, France): Nature of the Associated Magmatism and Influence of Fluid Composition. In: Boissonnas, J., Omenetto, P. (eds) Mineral Deposits within the European Community. Special Publication No. 6 of the Society for Geology Applied to Mineral Deposits, vol 6. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-51858-4_6
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DOI: https://doi.org/10.1007/978-3-642-51858-4_6
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