Open AccessMn-nabohacené tetraedrity z rumunských ložisek Cavnic, Botești a Săcărâmb
Author(s) -
Dalibor Velebil,
Jiří Sejkora,
Zdeněk Dolníček
Publication year - 2020
Publication title -
bulletin mineralogie petrologie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.239
H-Index - 10
eISSN - 2570-7345
pISSN - 2570-7337
DOI - 10.46861/bmp.28.161
Subject(s) - tetrahedrite , electron microprobe , crystallography , chemical composition , chemistry , analytical chemistry (journal) , mineralogy , materials science , galena , sphalerite , pyrite , organic chemistry , chromatography
Eight samples of members of tetrahedrite group from Romanian deposits were examined in terms of their chemical composition studied by means of electron microprobe; five samples from Cavnic, two from Botești and one from Săcărâmb. Mean composition of all samples is corresponding to tetrahedrite-(Zn) and most of them contain Mn. The three Cavnic tetrahedrites contain up to 0.17 apfu, the two Botești samples contain up to 0.42 apfu and the Săcărâmb sample up to 0.83 apfu Mn. Pb and Sn were present at levels up to 0.01 apfu but entering of Pb and Sn into the crystal structure of tetrahedrite group minerals is questionable. In spite of the significant presence of Te is characteristic for the Botești and Săcărâmb deposits, the studied tetrahedrites from these deposits are virtually Te-free (only locally contents of Te up to 0.05 apfu were detected in one sample).