J 2014

Iron plus magnesium-bearing beryl from granitic pegmatites: an EMPA, LA-ICP-MS, Mossbauer spectroscopy, and powder XRD study

PŘIKRYL, Jan, Milan NOVÁK, Jan FILIP, Petr GADAS, Michaela VAŠINOVÁ GALIOVÁ et. al.

Basic information

Original name

Iron plus magnesium-bearing beryl from granitic pegmatites: an EMPA, LA-ICP-MS, Mossbauer spectroscopy, and powder XRD study

Name in Czech

Železem a hořčíkem obohacený beryl z granitických pegmatitů: EMPA, LA-ICP-MS, Mossbauerova spektroskopie a prášková RTG difrakční studie

Authors

PŘIKRYL, Jan (203 Czech Republic, guarantor, belonging to the institution), Milan NOVÁK (203 Czech Republic, belonging to the institution), Jan FILIP (203 Czech Republic), Petr GADAS (203 Czech Republic, belonging to the institution) and Michaela VAŠINOVÁ GALIOVÁ (203 Czech Republic, belonging to the institution)

Edition

Canadian Mineralogist, QUEBEC, Mineralogical Association of Canada. 2014, 0008-4476

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10500 1.5. Earth and related environmental sciences

Country of publisher

Canada

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 1.181

RIV identification code

RIV/00216224:14310/14:00074475

Organization unit

Faculty of Science

UT WoS

000339701800009

Keywords (in Czech)

beryl; železo; hořčík; EMPA; LA-ICP-MS; Mossbauerova spektroskopie; granitické pegmatity

Keywords in English

beryl; iron; magnesium; EMPA; LA-ICP-MS; Mossbauer spectroscopy; granitic pegmatites

Tags

International impact, Reviewed
Změněno: 28/4/2015 09:55, Ing. Andrea Mikešková

Abstract

V originále

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.

Links

ED1.1.00/02.0068, research and development project
Name: CEITEC - central european institute of technology
GAP210/10/0743, research and development project
Name: Chemické složení a stupeň strukturního uspořádání přírodních turmalínů - geochemické versus strukturní faktory
Investor: Czech Science Foundation, Chemical composition and structural order of natural tourmalines - geochemical versus crystal-structural constraints