The secondary quartzites hosting gold mineralization in the Crn Vrv - Plavica Volcanic Area

Serafimovski, Todor and Rakic, Stevo (1998) The secondary quartzites hosting gold mineralization in the Crn Vrv - Plavica Volcanic Area. Geologica Macedonica, 12. pp. 9-21. ISSN 0352-1206

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The paper presents the latest results of the chemical examination and geochemical investigations carried out on the secondary quartzites in the Crn Vrv - Plavica area. The area under cinsideration consists of volcanic areas (volcanic calderas) in whose central parts secondary quartzites of variable gold concentrations were de­termined. The surface manifestations of the secondary quartzites occur as small lenses and nests, grading into wedge­
like shapes to depth. Chemical examinations showed that they contain highSiO2 (96.34 - 98.78%) contents. Geo­chemical examinations indicated the presence of gold concentrations accompanied by a large number of elements
such as Cu, Ag. Bi, Sb, Se, Te, Hg etc. Gold content is variable ranging from traces to over 20 ppm Au in individual samples. Lower contents have been found in the Crn Vrv area (5 to 467 ppb), and an average of 1.29 ppm Au (from 0. I86 to 0.506 ppm Au) were found in Plavica. The results ohtained were interpreted by appropriate computer soft­ ware. They showed signiiicant correlation relationships between individual pairs such as Au-Cu, Cu-Mo, Au-Sb, Au­- Hg, Au-Fe etc., indicating to a common primary mobilization and evolution within the epithermal mineralization system.

Item Type: Article
Uncontrolled Keywords: Crn Vrv - Plavica area, secondary quartizies; volcanics; gold mineralization; volcanic calderas;
Subjects: Engineering and Technology > Other engineering and technologies
Natural sciences > Other natural sciences
Divisions: Faculty of Natural and Technical Sciences
Depositing User: Todor Serafimovski
Date Deposited: 05 Dec 2012 10:30
Last Modified: 19 Jun 2013 08:15

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