Naslov
Morphology and pyroelectricity of tourmaline from Central Transbaikalia, Russia

Autori
Bermanec, Vladimir ; Čobić, Andrea ; Zebec, Vladimir ; Mikulčić Pavlaković, Snježana ; Zagorsky, Victor

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Contributions to the 5th international symposium on granitic pegmatites. Asociación Geológica Argentina, Serie D, Publicación Especial No 14 / Galliski, Miguel Ángel ; Roda Robles, Encarnación ; Hatert, Frédéric ; Márquez-Zavalía, María Florencia - Mendoza, 2011, 29-31

Skup
5th international symposium on granitic pegmatites, PEG 2011

Mjesto i datum
Mendoza, Argentina, 20.02.2011. - 27.02.2011

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
elbaite; morphology; pyroelectric effect; Transbaikalia

Sažetak
Fifteen transparent prismatic tourmaline crystals of elbaite composition, with terminal pyramidal faces and basal pedion were measured on a two-circle goniometer. All samples studied are collected from two localities of gem-bearing miarolitic pegmatites in Central Transbaikalia, Russia – the Vodorazdel’naya mine and the Malkhan deposit. Their geology and mineralogy are described in detail by Zagorsky & Peretyazhko 1992 ; 2008. It was not clear from these morphological measurements weather the positive or negative end of crystallographic axis c is morphologically terminated. In order of determining true crystallographic and morphological orientation of tourmaline crystals, the pyroelectric effect of tourmaline was measured. Crystals were cooled to a temperature below 0 °C (approximately -10 °C) and afterwards heated to the room temperature. Relative electrical charge was measured with a digital milivoltmeter.

Izvorni jezik
Engleski

Znanstvena područja
Geologija

POVEZANOST RADA