Sanidine twins from Zvegor, Republic of Macedonia (CROSBI ID 585949)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Zebec, Vladimir ; Žigovečki Gobac, Željka ; Mikulčić Pavlaković, Snježana ; Šijakova-Ivanova, Tena ; Čobić, Andrea ; Bermanec, Vladimir
engleski
Sanidine twins from Zvegor, Republic of Macedonia
Sanidine crystals were collected from quartz latite rocks east of the village Zvegor, in eastern part of the Republic of Macedonia. Morphology of these crystals was already described, but so far, among these crystals, only Carlsbad twins were observed. X-ray powder diffraction analysis of these crystals confirmed a sanidine crystal structure. Representative crystals were chosen for a goniometric measurement, which was done by two-circle reflecting goniometer. According to observation and measurements done, together with Carlsbad twins already observed, two new types of twins have been discovered. First, there are twins according to Manebach twin law, where twin plane is (001) and second, (110)-l Prism law, where twin plane is (110). Among all twins present, Carlsbad twins are most abundant. Left- and right-handed Carlsbad twins are almost equally present. In several cases a left- and a right-handed twinning in a just one twining formation is present. A complex multiple twinning is observed, where Carlsbad twins are between themselves grown according to (110) Prism twin law. Manebach twins are elongated along [100]. Although all these types of twins are already mentioned in literature, twins according to (110) Prism law are not so common, and, therefore, their finding is notable.
sanidine twins; Zvegor; Republic of Macedonia
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
Podaci o prilogu
163-163.
2012.
objavljeno
Podaci o matičnoj publikaciji
Acta mineralogica-petrographica, Abstract series, Volume 7
Fehér, Béla
Segedin: University of Szeged
0324-6523
Podaci o skupu
Joint 5th Mineral Sciences in the Carpathians Conference (MSCC) and the 3rd Central-European Mineralogical Conference (CEMC)
poster
19.04.2012-21.04.2012
Miskolc, Mađarska