Other formats:
BibTeX
LaTeX
RIS
@article{1232743,
author = {Breiter, Karel and Ackerman, Lukáš and Ďurišová, Jana and Svojtka, Martin and Novák, Milan},
article_location = {Middlesex},
article_number = {3},
doi = {http://dx.doi.org/10.1180/minmag.2014.078.3.17},
keywords = {quartz; pegmatite evolution; mineralogy; trace elements; Moldanubian Zone; Bohemian Massif},
language = {eng},
issn = {0026-461X},
journal = {Mineralogical Magazine},
title = {Trace element composition of quartz from different types of pegmatites: A case study from the Moldanubian Zone of the Bohemian Massif (Czech Republic)},
volume = {78},
year = {2014}
}
TY - JOUR
ID - 1232743
AU - Breiter, Karel - Ackerman, Lukáš - Ďurišová, Jana - Svojtka, Martin - Novák, Milan
PY - 2014
TI - Trace element composition of quartz from different types of pegmatites: A case study from the Moldanubian Zone of the Bohemian Massif (Czech Republic)
JF - Mineralogical Magazine
VL - 78
IS - 3
SP - 703-722
EP - 703-722
PB - Mineralogical Society
SN - 0026461X
KW - quartz
KW - pegmatite evolution
KW - mineralogy
KW - trace elements
KW - Moldanubian Zone
KW - Bohemian Massif
N2 - The evolution of the trace-element patterns of quartz during crystallization of pegmatite melt was investigated using laser ablation inductively coupled plasma mass spectrometry. The contents of Al, B, Ba, Be, Cr, Fe, Ge, Li, Mn, P, Rb, Sn, Sr and Ti were analysed in quartz from the border, intermediate and core zones of four granitic pegmatites differing in degree of fractionation and origin. The material investigated originates from the pegmatite district of the Strážek Unit, Moldanubian Zone, Bohemian Massif, Czech Republic and includes: lepidolite LCT (Li-Cs-Ta) pegmatite from Rožná; berylcolumbite LCT pegmatite from Věž ná; anatectic pegmatite from Znětínek; and intragranitic NYF (Nb-Y-F) pegmatite Vladislav from the Třebíč Pluton. The abundances of the elements analysed varied over wide intervals: <1 to 32 ppm Li, 0.5 to 6 ppm B, <1 to 10 ppm Ge, 1 to 10 ppm P, 10 to 450 ppm Al, 1 to 45 ppm Ti and <1 to 40 ppm Fe (average sample contents). Concentrations of Be, Rb, Sr, Sn, Ba, Cr and Mn are usually <1 ppm. Quartz from LCT pegmatites exhibits a distinct evolutionary trend with a decrease in Ti and an increase in Al, Li and Ge from the pegmatite border to the core. In comparison with the most fractionated rare-metal granites, pegmatitic quartz is relatively depleted in Al and Li, but strongly enriched in Ge. Quartz from simple anatectic and NYF pegmatites is poor in all trace elements with their evolution marked by a decrease in Ti and a small increase in Ge. There is little Al or Li and neither shows any systematic change with pegmatite evolution. Using the Ti-in-quartz thermobarometer, the outer zones of the Znětínek and Vladislav pegmatites crystallized at cca 670°C, whereas the border zone in the Rožná pegmatite yields a temperature near 610°C.
ER -
BREITER, Karel, Lukáš ACKERMAN, Jana ĎURIŠOVÁ, Martin SVOJTKA and Milan NOVÁK. Trace element composition of quartz from different types of pegmatites: A case study from the Moldanubian Zone of the Bohemian Massif (Czech Republic). \textit{Mineralogical Magazine}. Middlesex: Mineralogical Society, 2014, vol.~78, No~3, p.~703-722. ISSN~0026-461X. Available from: https://dx.doi.org/10.1180/minmag.2014.078.3.17.
|
