Typization of hydrothermal alterations in the Borov Dol deposit

Gjorgiev, Lazar (2022) Typization of hydrothermal alterations in the Borov Dol deposit. Geologica Macedonica, 37 (1). pp. 177-195. ISSN 0352-1206

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Abstract

For the study of hydrothermal alterations in the Borov Dol deposit, a total of 12 samples were taken, of which 10 samples from boreholes BD-335, BD-320 and BD-322, and 2 samples from the open pit mining of Borov Dol. The material for the X-ray diffraction analyses was also prepared from the samples from which petrographic preparations were made. The following types of alterations have been determined from the conducted investigations: propylitization, chloritization, epidotization, argillitization, kaolinization, calcitization, silification, sericitization, biotitization, adularization, and K-feldsparization. Some of the alterations are pre-ore or follow the formation of copper mineralization (silicification, sericitization and K feldsparization), and some are post-ore (argillitization, calcitization, and kaolinization). The model of alterations follows the examples of porphyry systems, and the most significant alterations for the spatial distribution of copper mineralization in the Borov Dol deposit are sericitization, silicification, and K-metasomatism. Surface alterations are due mainly to limonitization and in places to argillite alteration. Propylitization gives the segment of the outer halo of alterations in this area.

Item Type:	Article
Subjects:	Natural sciences > Earth and related environmental sciences
Divisions:	Faculty of Natural and Technical Sciences
Depositing User:	Lazar Gorgiev
Date Deposited:	30 Aug 2023 08:38
Last Modified:	30 Aug 2023 08:38
URI:	https://eprints.ugd.edu.mk/id/eprint/32108

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