Nowy zespół minerałów Sn-W-Mo że Starej Góry (Dolny Śląsk) i jego znaczenie genetyczne

Hubert Sylwestrzak, Krystyna Wołkowicz

Abstrakt


A NEW ASSEMBLAGE OF SN-W-MO MINERALS FROM STARA GÓRA (LOWER SILESIA) AND ITS GENETIC SIGNIFICANCE

Summary
The exploitation of the Stara Góra deposit was mainly connected with mining As and Cu ores (arsenopyrite and chalcopyrite ). The ores are accompanied by an ore mineral assemblage indicative of high-temperature hydrothermal paragenesis. The deposit occurs in spatial relations with a neck of Late Paleozoic porphyry but, taking into account some of its mineralogical and geochemical features, some authors were inclined to assume that source of mineralization was related to a deeper-seated granite intrusion.
In the last years a mineralogist-amateur has found a specimen of vein quartz with large (a few cm in size) crystals of cassiterite and wolframite and identifiable under microscope crystals of bismuth minerals, arsenopyrite, rutile and fluorite. This newly found assemblage of ore minerals closely resembles mineralization known from apical parts of granites in the Etzgebirge Mts. The assemblage indicates high-temperature conditions of crystallization and, indirectly, confirms existence of a granite elevation in the basement. The record of Sn-W-Mo mineralization gives a new premise for starting further search in this area.

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