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@article{1230860,
author = {Přikryl, Jan and Novák, Milan and Filip, Jan and Gadas, Petr and Vašinová Galiová, Michaela},
article_location = {QUEBEC},
article_number = {2},
keywords = {beryl; iron; magnesium; EMPA; LA-ICP-MS; Mossbauer spectroscopy; granitic pegmatites},
language = {eng},
issn = {0008-4476},
journal = {Canadian Mineralogist},
title = {Iron plus magnesium-bearing beryl from granitic pegmatites: an EMPA, LA-ICP-MS, Mossbauer spectroscopy, and powder XRD study},
volume = {52},
year = {2014}
}
TY - JOUR
ID - 1230860
AU - Přikryl, Jan - Novák, Milan - Filip, Jan - Gadas, Petr - Vašinová Galiová, Michaela
PY - 2014
TI - Iron plus magnesium-bearing beryl from granitic pegmatites: an EMPA, LA-ICP-MS, Mossbauer spectroscopy, and powder XRD study
JF - Canadian Mineralogist
VL - 52
IS - 2
SP - 271-284
EP - 271-284
PB - Mineralogical Association of Canada.
SN - 00084476
KW - beryl
KW - iron
KW - magnesium
KW - EMPA
KW - LA-ICP-MS
KW - Mossbauer spectroscopy
KW - granitic pegmatites
N2 - Five samples of blue, bluish green, and green Fe,Mg-enriched beryl from Li-poor granitic pegmatites [beryl-columbite (LCT) pegmatites at Kovarova and Bonenov in the Czech Republic and Val Sissone in Italy; a primitive pegmatite at Beryller, Untersulzbachtal, Austria; and a euxenite (NYF) pegmatite from the Beryl Pit, Quadeville, Ontario] were investigated using EMPA, Mossbauer spectroscopy, LA-ICP-MS, and powder XRD diffraction. The EMPA data show highly heterogeneous (Kovarova, Val Sissone) to rather homogeneous crystals (Bonenov, Beryller, Quadeville), with high variations in Al (1.51-1.91 apfu), Mg (0.01-0.31), Fe-tot (0.01-0.18), and Na (0.04-0.37). The substitution (CH)square + R-O(3+) <-> R-CH(+) + R-O(2+) is dominant and supported by the powder XRD data. LA-ICP-MS revealed notable concentrations of some trace elements: Cs <= 7568 ppm (Kovarova), Li <= 928 ppm (Quadeville), Sc <= 2823 ppm (Val Sissone). Beryl samples have mostly comparable contents of Fe3+, similar to 25% at the O-site, but differ in the presence of Fe2+ at the T(2)-site. Primitive characteristics of some examined beryl (Mg/(Mg+Fe-tot) = 0.37-0.68 reflect low degree of fractionation of the host pegmatite (Beryller), or high degree of Mg-contamination from host metabasites in the pegmatite dikes (Kovarova, Bonenov). The concentrations and ratios of selected elements, including Fe3+/Fe2+, in beryl from these Li-poor pegmatites are not feasible for any implications of pegmatite-family affinity or degree of its fractionation except for Li; however, no evident correlation between Li and Cs contents was found.
ER -
PŘIKRYL, Jan, Milan NOVÁK, Jan FILIP, Petr GADAS and Michaela VAŠINOVÁ GALIOVÁ. Iron plus magnesium-bearing beryl from granitic pegmatites: an EMPA, LA-ICP-MS, Mossbauer spectroscopy, and powder XRD study. \textit{Canadian Mineralogist}. QUEBEC: Mineralogical Association of Canada., vol.~52, No~2, p.~271-284. ISSN~0008-4476. 2014.
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