Sijakova-Ivanova, Tena and Čobič, Andrea and Zebec, Vladimir and Bermanec, Vladimir and Žigovecki Gobac, Željka (2011) Crystal morphology of sanidine phenocrysts from Zvegor, Republic of Macedonia. 2ndInternational workshop on the UNESCO-IGCP Project: “Anthropogenic effects on the human environment in the Neogene basins in the SE Europe”, 2. pp. 1-5.
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Abstract
This paper presents the results of the research carried out on sanidine crystals
from Zvegor, Republic of Macedonia. 572 crystals were collected for research: 326
single crystals and 23 randomly intergrown crystals, 100 right-handed and 123 lefthanded
Carlsbad twins. Results show that left- and right-handed Carlsbad twins are
almost equally represented at this locality. Goniometric measurements showed the
appearance of six forms: {010}, {110}, {130}, {001}, { 1 11} and { 201}. XRPD
analysis of the sanidine - crust (Fds_C), showed that it consists of a mixture of three
different phases: calcite as a dominant phase, illite and sanidine. The mixture of these
phases could be a result of the feldspar crystal alteration which was primary of sanidine
composition. The alteration could have been due to influence of solutions which also
affected other components of the rock. It could also be a result of a post crystallization
reaction of sanidine with the altered rock. XRPD analysis shows that the core of the
sample (Fds_S) is sanidine
| Item Type: | Article |
|---|---|
| Subjects: | Natural sciences > Other natural sciences |
| Divisions: | Faculty of Natural and Technical Sciences |
| Depositing User: | Tena Sijakova Ivanova |
| Date Deposited: | 05 Nov 2013 14:21 |
| Last Modified: | 05 Nov 2013 14:21 |
| URI: | https://eprints.ugd.edu.mk/id/eprint/7956 |
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