Geologia Croatica, Vol. 46 No. 2, 1993.
Izvorni znanstveni članak
Hedyphane from Nezilovo, Macedonia
V. Bermanec
D. Balen
R. Oberhaensli
S. Šćavnićar
Sažetak
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).
Ključne riječi
Hedyphane; X-ray powder pattern; Unit cell dimensions; Microprobe analyses; IR spectra; Nezilovo; Macedonia
Hrčak ID:
19584
URI
Datum izdavanja:
3.12.1993.
Posjeta: 824 *