Chemical types of amphiboles from the Tyrnyauz deposit

Based on the results of microprobe analyses, six groups of calcium amphiboles were distinguished for the Tyrnyauz deposit. Group I (mainly edenite) includes amphiboles of hornfels and periskarn rocks. Groups II-VI (actinolite-hastingsite series) are related to post-skarn metasomatic rocks of the pro...

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Bibliographic Details
Published in:Moscow University geology bulletin 2013-07, Vol.68 (4), p.242-252
Main Authors: Gramenitskaya, P. N., Gramenitskii, E. N., Kononov, O. V.
Format: Article
Language:English
Subjects:
Calcium
Chemicals
Earth and Environmental Science
Earth Sciences
Geology
Mineralogy
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Summary:Based on the results of microprobe analyses, six groups of calcium amphiboles were distinguished for the Tyrnyauz deposit. Group I (mainly edenite) includes amphiboles of hornfels and periskarn rocks. Groups II-VI (actinolite-hastingsite series) are related to post-skarn metasomatic rocks of the productive stage after hornfels (II), the tonalite and plagiogranite complex (III), ultrabasic rocks (IV), pyroxene-plagioclase periskarn rocks (V), and skarn (VI). Group IV is represented by actinolite; group VI, by hastingsite; groups II, III, and V, by hornblende varieties.
ISSN:0145-8752
1934-8436
DOI:10.3103/S0145875213040029