TEMPERATURES OF THE ORE-FORMING PROCESSES IN THE BUCHIM PORPHYRY COPPER-DEPOSIT (MACEDONIA) - DATA FROM FLUID INCLUSION STUDIES

Citation
S. Strashimirov et al., TEMPERATURES OF THE ORE-FORMING PROCESSES IN THE BUCHIM PORPHYRY COPPER-DEPOSIT (MACEDONIA) - DATA FROM FLUID INCLUSION STUDIES, Geology of ore deposits, 38(4), 1996, pp. 333-337
Citations number
5
Categorie Soggetti
Mineralogy,Geology
Journal title
ISSN journal
10757015
Volume
38
Issue
4
Year of publication
1996
Pages
333 - 337
Database
ISI
SICI code
1075-7015(1996)38:4<333:TOTOPI>2.0.ZU;2-B
Abstract
This recent study is the first attempt to establish the temperature of the ore-forming processes on the basis of fluid inclusion studies in the Buchim porphyry copper deposit, the largest deposit of this type i n the territory of Macedonia. The observations are made on samples fro m quartz in association with ore minerals from the central part of the deposit (Tzetralni del). Typization of the inclusions studied establi shed a large presence of three phases of inclusions, containing very o ften more than one solid phase as a ''daughter'' mineral. These inclus ions are significant by their relatively large sizes (10-30 pm) and ve ry high temperatures of homogenization (500-580 degrees C). They are t ypical for an association with magnetite, hematite, and rutile. The te mperatures of homogenization for the two-phase inclusions show four ma ximum ranges (490-460 degrees C, 430-400 degrees C, 370-320 degrees C, and 200-180 degrees C). These maximums probably mark the temperature ranges of the deposition of the main mineral assemblage in the deposit . The largest part of the copper mineralization was formed in the firs t and in the second temperature interval. Compared with similar copper deposits from the SE part of the Carpatho-Balkan region, the Buchim d eposit is much closer to the Elatzite porphyry copper deposit (Panagiu rishte ore region, Bulgaria) and the Maijdanpek porphyry copper deposi t (Bor ore district, Yugoslavia).