%A Jančev, Simeon %A Karamačoska, Biljana %D 2017 %T Mass-spectrometric examinations (δ34S) of different baryte, pyrite, galena, sphalerite samples from the ore occurrences in the mixed series at Nežilovo village, Macedonia %K %X In this paper we present the results of the δ 34 S-mass spectrometric examinations of different baryte, pyrite, galena and sphalerite samples from the ore occurrences in the mixed series at Nežilovo village, Macedonia. The examined baryte samples (fine-grained and coarse-grained generations in total number of 16 samples) show a very narrow span of the δ 34 S (+22.5 to +28.3 ‰ for the fine-grained barytes and  +21 to +26 ‰ for the coarse-grained baryte generations). These δ 34 S values for the examined barytes samples show a homogenous S-source probably of marine origin—marine sulphates. In five samples of different sulphide minerals: galena, sphalerite, cleiophane (from baryte schists), pyrite (from cymrite-quartz schists) were found very close δ 34 S values, varying of +3.3 ‰ to +11.6 ‰. These values for examined sulphides show probably an endogenous-juvenile origin representing volcanic sulphides. Examined pyrite sample with hexahedral forms (from the albite-augen gneisses) shows δ 34 S values of -10.5 ‰, being typical for S-source of sedimentary origin. %U http://acta.musmacscinat.mk/index.php/acta/article/view/2 %J Acta Musei Macedonici Scientiarum Naturalium %0 Journal Article %P 9-14 %V 20 %N 1 %@ 2545-4587 %8 2017-12-21