New data on the hydrothermal alterations in the Plavica deposit (Eastern Macedonia)

Spasovski, Orce and Mircovski, Vojo (2008) New data on the hydrothermal alterations in the Plavica deposit (Eastern Macedonia). Geologica Macedonica, 22. pp. 9-16. ISSN 0352 -1206

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The data presented in the paper were obtained based on analyses carried out on samples collected from various depths along the entire length of drill-hole no. 4. The drill-hole was the last one made in the area of the Plavica deposit by the Rio Tinto Company. The samples analyzed point out the presence of subvolcanic to volcanic rocks, presumably dacites and dacite- andesites, that can be distinguished based on the presence of primary quartz. An exception is sample no. 6 which, most probably, represents one of the vein rocks. The alterations seen under a microscope include silicification (with several quartz generations), argillitisation, sericitisation, epidotisation, K-metasomatism and, presumably, zeolitization. X-ray examinations determined the alterations as follows: silicification, alunitisation, argillitisation, sericitisa- tion, K-feldspatisation, fluoritisation, propylitisation and hematisation.

Item Type: Article
Uncontrolled Keywords: plavica deposit; hydrothermal alterations; dacites; andesites; ignimbrites; drill-hole; microscopic examinations; x-ray examinations
Subjects: Engineering and Technology > Other engineering and technologies
Natural sciences > Other natural sciences
Divisions: Faculty of Natural and Technical Sciences
Depositing User: Orce Spasovski
Date Deposited: 27 Nov 2012 14:00
Last Modified: 07 Oct 2013 10:48

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