Hedyphane from Nezilovo, Macedonia

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DOI: https://doi.org/10.4154/GC.1993.20
Keywords:
Hedyphane, X-ray powder pattern, Unit cell dimensions, Microprobe analyses, IR spectra, Nezilovo, Macedonia

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Vladimir Bermanec
Department of Geology and Palaeontology, Faculty of Science, University of Zagreb
Dražen Balen
Department of Mineralogy and Petrology, Faculty of Science, University of Zagreb
Roland Oberhänsli
Stjepan Šćavničar
Department of Geology, Faculty of Science, University of Zagreb

Abstract

Two different members of lead calcium arsenate series of apatite group from Nezilovo are found. According to the chemical formula (calculated on the basis of 10 cations), infra red absorption powder spectra, X-ray powder patterns and unit cell dimensions these are two distinct members of one mineral species. Unit cell dimensions are a=10.157(3), c=7.256(6) and a=10.154(2), c=7.191(3) A. The first sample has Pb:Ca ratio 7.35:2.59 and the second one 6.54:3.45, what is closer to ideal hedyphane formula (6:4).

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Article Details

Issue
Vol 46 No 2 (1993)
Section
Original Scientific Papers

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