Serafimovski, Todor and Zlatkov, Goce and Tasev, Goran and Stefanova, Violeta (2016) Cu-Au minerals and transformed mineral phases in the oxidation zone of the Plavica ore deposit, Eastern Macedonia. Geologica Macedonica, 30 (1). pp. 5-21. ISSN 0352-1206
Preview |
Text
Serafimovski et al GM 2016 Vol 30 No 1.pdf Download (1MB) | Preview |
Abstract
Within this paper we present the latest mineralogical and chemical studies of particular minerals and mineral phases from oxidation zone and partially from the primary sulphide mineralization within the Cu-Аu deposit
Plavica. Oxide zone in this ore deposit represents a system of so-called hats of secondary alunitized quartzites intensively oxidized and represented by veinlet and net-like Fe-oxide and Fe-hydroxides. The major feature of this zone is interesting gold concentration. The major part of confirmed gold within alunitized iron quartzites reaches concentrations within the range of 1.80 up to 5.85 g/t Au. The gold is often present as native gold, mostly in Fe-hydroxides
and in some places as finely dispersed in pyrite. There its concentration varies from 0.56 g/t up to 0.60 g/t
Au. The mineral composition of the oxidation zone is quite extensive (about 31 minerals) of which as principal with prevailing share up to 70% are quartz, alunite, kaolinite and sericite, as secondary minerals accounting up to 11% are pyrite, goethite, chalcocite, hematite, bornite, covellite, malachite and azurite, while as rare mineral phases with share under 5% are chalcopyrite, tetrahedrite, tennantite, enargite, galena, sphalerite and others.
| Item Type: | Article |
|---|---|
| Subjects: | Natural sciences > Earth and related environmental sciences |
| Divisions: | Faculty of Natural and Technical Sciences |
| Depositing User: | Goran Tasev |
| Date Deposited: | 14 Jun 2016 13:26 |
| Last Modified: | 14 Jun 2016 13:26 |
| URI: | https://eprints.ugd.edu.mk/id/eprint/15931 |
Actions (login required)
 |
View Item |