Geologia Croatica (Dec 2010)

Hedyphane from Nezilovo, Macedonia

  • Vladimir Bermanec,
  • Dražen Balen,
  • Roland Oberhänsli,
  • Stjepan Šćavničar

DOI
https://doi.org/10.4154/GC.1993.20
Journal volume & issue
Vol. 46, no. 2
pp. 229 – 232

Abstract

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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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