Fluid inclusions and sulphur isotopes of the Valea Morii ore deposit (Apuseni mountains, Romania):: telescoping between porphyry and low-sulfidation epithermal ore deposits?

The Valea Morii Cu-Au ore deposit (Apuseni mountains, Romania) is characterised by a spatial association of a porphyry copper (Cu +/- Au) with a low-sulfidation epithermal deposit (Au). Microthermometric and sulphur isotopic data, obtained on both porphyry and epithermal veins, express a telescoping between these two types of mineralization, which can be explained either by an erosion phenomenon during the hydrothermal activity or by a collapse of the upper part of the hydrothermal system. (C) 2001 Academie des sciences/Editions scientifiques et medicales Elsevier SAS.