Distributions of Y plus REE and Sc in tourmaline and their
implications for the melt evolution; examples from NYF
pegmatites of the Trebic Pluton, Moldanubian Zone, Czech
Republic

J 2013

Distributions of Y plus REE and Sc in tourmaline and their implications for the melt evolution; examples from NYF pegmatites of the Trebic Pluton, Moldanubian Zone, Czech Republic

ČOPJAKOVÁ, Renata; Radek ŠKODA; Michaela VAŠINOVÁ GALIOVÁ a Milan NOVÁK

Základní údaje

Originální název

Distributions of Y plus REE and Sc in tourmaline and their implications for the melt evolution; examples from NYF pegmatites of the Trebic Pluton, Moldanubian Zone, Czech Republic

Autoři

ČOPJAKOVÁ, Renata; Radek ŠKODA; Michaela VAŠINOVÁ GALIOVÁ a Milan NOVÁK

Vydání

Journal of Geosciences, Praha, Czech geol.Soc, 2013, 1802-6222

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10500 1.5. Earth and related environmental sciences

Stát vydavatele

Česká republika

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 0.744

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/13:00066873

Organizační jednotka

Přírodovědecká fakulta

DOI

https://doi.org/10.3190/jgeosci.138

UT WoS

000324554300004

Klíčová slova anglicky

Y plus REE and Sc; tourmaline composition; melt evolution; LA-ICP-MS; NYF pegmatites; Trebic Pluton

Štítky

AKR, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 10. 2. 2014 15:26, Mgr. Michaela Vašinová Galiová, Ph.D.

Anotace

V originále

Tourmalines from NYF and mixed (NYF + LCT) pegmatites of the Trebic Pluton (Moldanubian Zone, Czech Republic) are generally characterized by variable and relatively high concentrations of Y + REE (4-457 ppm) and Sc (18-765 ppm). They show enrichment in LREE (Ce > La); the chondrite-normalized REE patterns decrease uniformly from La to Tb; Tb to Tm are mostly below the detection limits (<0.01-0.08 ppm) and are followed by an upturn to Yb and Lu. Our textural and paragenetic observations indicate that growth of magmatic tourmaline reflects Y + REE contents in the melt. Tourmaline is highly compatible with Sc and shows exceptionally high contents of Sc compared to the analyzed host pegmatite units (less than 1 ppm Sc). The contents of Sc positively correlate with Sigma Y + REE. Two distinct evolutionary trends of trace-elements in tourmaline were distinguished. (i) A conspicuous increase in Y + REE and Sc in tourmaline (dravite, Ca-rich dravite) from primitive euxenite-type pegmatites reflects their enrichment in the melt with the progressive crystallization and fractionation. It also was enhanced by low P (<0.02 wt. % P2O5) and Ca contents (<0.8 wt. % CaO) in host pegmatite unit preventing precipitation of Y + REE phosphates and allanite, respectively. (ii) Tourmaline (schorl, fluor-schorl, fluor-elbaite) from more evolved pegmatites (evolved euxenite-type and mixed (NYF + LCT) pegmatite) show a depletion in REE and Sc with progressive crystallization reflecting most likely the coeval precipitation of REE-rich minerals, especially monazite-(Ce), xenotime-(Y), samarskite- and aeschynite-group minerals. The Eu anomalies in tourmaline vary significantly from positive (up to Eu/Eu* similar to 16) to substantially negative ones and are related to the Eu contents in the melt and degree of its fractionation.

Návaznosti

ED1.1.00/02.0068, projekt VaV

Název: CEITEC - central european institute of technology

GAP210/10/0743, projekt VaV

Název: Chemické složení a stupeň strukturního uspořádání přírodních turmalínů - geochemické versus strukturní faktory

Investor: Grantová agentura ČR, Chemické složení a stupeň strukturního uspořádání přírodních turmalínů - geochemické versus strukturní faktory

Citovat

ČOPJAKOVÁ, Renata; Radek ŠKODA; Michaela VAŠINOVÁ GALIOVÁ a Milan NOVÁK. Distributions of Y plus REE and Sc in tourmaline and their implications for the melt evolution; examples from NYF pegmatites of the Trebic Pluton, Moldanubian Zone, Czech Republic. Journal of Geosciences. Praha: Czech geol.Soc, 2013, roč. 58, č. 2, s. 113-131. ISSN 1802-6222. Dostupné z: https://doi.org/10.3190/jgeosci.138.

@article{1164684,
   author = {Čopjaková, Renata and Škoda, Radek and Vašinová Galiová, Michaela and Novák, Milan},
   article_location = {Praha},
   article_number = {2},
   doi = {https://doi.org/10.3190/jgeosci.138},
   keywords = {Y plus REE and Sc; tourmaline composition; melt evolution; LA-ICP-MS; NYF pegmatites; Trebic Pluton},
   language = {eng},
   issn = {1802-6222},
   journal = {Journal of Geosciences},
   title = {Distributions of Y plus REE and Sc in tourmaline and their implications for the melt evolution; examples from NYF pegmatites of the Trebic Pluton, Moldanubian Zone, Czech Republic},
   volume = {58},
   year = {2013}
}

TY  - JOUR
ID  - 1164684
AU  - Čopjaková, Renata - Škoda, Radek - Vašinová Galiová, Michaela - Novák, Milan
PY  - 2013
TI  - Distributions of Y plus REE and Sc in tourmaline and their implications for the melt evolution; examples from NYF pegmatites of the Trebic Pluton, Moldanubian Zone, Czech Republic
JF  - Journal of Geosciences
VL  - 58
IS  - 2
SP  - 113-131
EP  - 113-131
PB  - Czech geol.Soc
SN  - 18026222
KW  - Y plus REE and Sc
KW  - tourmaline composition
KW  - melt evolution
KW  - LA-ICP-MS
KW  - NYF pegmatites
KW  - Trebic Pluton
N2  - Tourmalines from NYF and mixed (NYF + LCT) pegmatites of the Trebic Pluton (Moldanubian Zone, Czech Republic) are generally characterized by variable and relatively high concentrations of Y + REE (4-457 ppm) and Sc (18-765 ppm). They show enrichment in LREE (Ce > La); the chondrite-normalized REE patterns decrease uniformly from La to Tb; Tb to Tm are mostly below the detection limits (<0.01-0.08 ppm) and are followed by an upturn to Yb and Lu. Our textural and paragenetic observations indicate that growth of magmatic tourmaline reflects Y + REE contents in the melt. Tourmaline is highly compatible with Sc and shows exceptionally high contents of Sc compared to the analyzed host pegmatite units (less than 1 ppm Sc). The contents of Sc positively correlate with Sigma Y + REE. Two distinct evolutionary trends of trace-elements in tourmaline were distinguished. (i) A conspicuous increase in Y + REE and Sc in tourmaline (dravite, Ca-rich dravite) from primitive euxenite-type pegmatites reflects their enrichment in the melt with the progressive crystallization and fractionation. It also was enhanced by low P (<0.02 wt. % P2O5) and Ca contents (<0.8 wt. % CaO) in host pegmatite unit preventing precipitation of Y + REE phosphates and allanite, respectively. (ii) Tourmaline (schorl, fluor-schorl, fluor-elbaite) from more evolved pegmatites (evolved euxenite-type and mixed (NYF + LCT) pegmatite) show a depletion in REE and Sc with progressive crystallization reflecting most likely the coeval precipitation of REE-rich minerals, especially monazite-(Ce), xenotime-(Y), samarskite- and aeschynite-group minerals. The Eu anomalies in tourmaline vary significantly from positive (up to Eu/Eu* similar to 16) to substantially negative ones and are related to the Eu contents in the melt and degree of its fractionation.
ER  -

ČOPJAKOVÁ, Renata; Radek ŠKODA; Michaela VAŠINOVÁ GALIOVÁ a Milan NOVÁK. Distributions of Y plus REE and Sc in tourmaline and their implications for the melt evolution; examples from NYF pegmatites of the Trebic Pluton, Moldanubian Zone, Czech Republic. \textit{Journal of Geosciences}. Praha: Czech geol.Soc, 2013, roč.~58, č.~2, s.~113-131. ISSN~1802-6222. Dostupné z: https://doi.org/10.3190/jgeosci.138.

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