Association of the World Biggest Crystals of the Brucite, Mg(OH)2 from 'Rzanovo, Macedonia

Bermanec, Vladimir and Boev, Blazo and Sijakova-Ivanova, Tena and Šćavničar, S. (1999) Association of the World Biggest Crystals of the Brucite, Mg(OH)2 from 'Rzanovo, Macedonia. Geologica Macedonica. pp. 85-89. ISSN 0352-1206

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Abstract

Within highly altered peridotite host rock in 'Rzanovo region, south of Kavadarci, big acicular, colorless crystals were found. X-ray powder diffraction pattern shows that this mineral is brucite. Crystals up to 80 cm in size were found in serpentinized ultrabasic rocks, within veins. Needles are perpendicular to vein walls. Its unit cell is: a = 4.648, c =14.95 A(rhombohedral a =5.660 A, a= 48.49°) V 279.7 A3, Z 6 (rhombohedral 2). Means of 4 sets of microprobe data combined with thermogravimetric measurement of H20 yield in complete analysis: MgO 61.460, PeO 1.490, MnO 0.316, CaO 0.152, Na20 2.310, K20 0.102, Si02, 1.840, AI20) 3.230, H20 29.705. Total 100.495 wt.%.

Item Type: Article
Subjects: Natural sciences > Other natural sciences
Divisions: Faculty of Natural and Technical Sciences
Depositing User: Blazo Boev
Date Deposited: 03 Dec 2012 12:04
Last Modified: 08 Nov 2013 10:50
URI: http://eprints.ugd.edu.mk/id/eprint/2920

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