New Data on Geochemistry and Mineralogy of Opalized Tuff in the Strmosh Deposit near Probishtip, NE Macedonia

Spasovski, Orce and Simic, Vladimir (2010) New Data on Geochemistry and Mineralogy of Opalized Tuff in the Strmosh Deposit near Probishtip, NE Macedonia. Proceedings of the 15th Congress of Geologists of Serbia with International Participation. pp. 235-239.

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Abstract

In the southern part of the Kratovo–Zletovo volcanic area, in the vicinity of the Strmo{village, occur opal-
ized and kaolinised white and red tuffs, the white one being in exploitation. In the last year this commodity is used for production of synthetic zeolite for detergent industry and waste water treatment.
White tuff is made of opal, crystobalite, quartz, kaolinite and alunite. Matrix consists of volcanic glass and fragmented grains, with phenocrysts of plagioclase, biotite flakes, rare pyroxen and abundant limonite. Chemical analyses revealed that kaolinised tuff contains a lot of alumina (arond 27 % Al2O3), while silicified tuff is rich in silica (90–92 % SiO2). Content of all other components is low except Fe2O3, which is rather high in kaolinised tuff. Trace elements content is low, which means that hydrothermal fluids were not enriched in ore elements.

Item Type:	Article
Uncontrolled Keywords:	Strmosh deposit, opalized and kaolinised tuff, geochemistry, mineralogy, volcanic rocks, alteration.
Subjects:	Social Sciences > Other social sciences
Divisions:	Faculty of Natural and Technical Sciences
Depositing User:	Orce Spasovski
Date Deposited:	28 Nov 2012 13:52
Last Modified:	07 Oct 2013 13:17
URI:	https://eprints.ugd.edu.mk/id/eprint/2354

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