Trace element composition of micas from rare-metal granites of
different geochemical affiliations

J 2023

Trace element composition of micas from rare-metal granites of different geochemical affiliations

BREITER, Karel; Michaela VAŠINOVÁ GALIOVÁ; Michaela HLOŽKOVÁ; Zuzana KORBELOVÁ; Jindřich KYNICKÝ et al.

Základní údaje

Originální název

Trace element composition of micas from rare-metal granites of different geochemical affiliations

Autoři

BREITER, Karel; Michaela VAŠINOVÁ GALIOVÁ; Michaela HLOŽKOVÁ; Zuzana KORBELOVÁ; Jindřich KYNICKÝ a Hilton TULIO COSTI

Vydání

Lithos, Elsevier, 2023, 0024-4937

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10406 Analytical chemistry

Stát vydavatele

Nizozemské království

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 2.900

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/23:00130511

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

Mica chemistry; Rare-metal granite; Laser-ablation ICP-MS mineral analysis

Štítky

14313010, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 6. 2. 2024 09:12, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

About 2600 spot analyses of mica (combined electron microprobe and laser ablation ICP-MS) from 120 samples from eight rare-metal granite (RMG) plutons of different geochemical affiliations were performed to characterize the contents of major (Si, Ti, Al, Fe, Mn, Mg, Ca, Na, K, F), minor (Li, Rb, Zn), and trace elements (Sc, Nb, Sn, Cs, Ta, W). This allowed to constrain changes in mica chemistry during magma fractionation and to characterize the relation between the trace-element spectra in mica and geochemical specializations of parental granites. The studied samples covered metaluminous to peralkaline A-type granites of the Madeira pluton (Brazil), metaluminous to peraluminous A-type granites (Kimi, Finland; Orlovka, Russia; Cínovec, Czech Republic) and strongly peraluminous S-type granites (Panasqueira and Argemela, Portugal; Beauvoir, France; Nejdek, Czech Republic). Micas from non-mineralized S- and I-type granitoids from the Czech Republic were analyzed for comparison. For the monitored rare metals, the maximum contents are 1200 ppm Sn (Madeira), 350 ppm W (Beauvoir, Nejdek), 2300 ppm Nb (Madeira) and 200 ppm Ta (Orlovka, Cínovec and Nejdek); Sc reaches maximally 300 ppm at Orlovka. Micas from peraluminous RMG are generally rather enriched in W and Cs, while micas from subaluminous A-type granites are relatively enriched in Nb and Sc. Micas from the studied peralkaline rocks are rich in Nb and poor in Cs, Sc and W. With increasing fractionation of the parental magma, the contents of F, Li, and Rb in mica increase, while the contents of high-field-strength elements (HFSE) usually decrease. This can be attributed to the crystallization of late Li-mica after the HFSE accessories rather than to the effect of the mica crystal structure. Micas affected by high-temperature hydrothermal events are usually completely re-equilibrated. By contrast, low-temperature muscovitization connected with washing out of Li and an increase in Sn affected only rims of mica flakes, leaving crystal cores in their original composition. In a succession from early biotite granites to late Li-mica granites, the share of mica in bulk Sn, Nb and Ta contents in the rocks decreases (50–80 → 5–10%, 10–80 → 1–10% and 100 → <5%, respectively), and rutile, cassiterite and columbite/pyrochlore become the main hosts of rare metals.

Návaznosti

MUNI/A/1298/2022, interní kód MU

Název: Základní a aplikovaný výzkum a vývoj metod chemické a fyzikálně chemické analýzy pro studium přírody a pokročilé technologie

Investor: Masarykova univerzita, Základní a aplikovaný výzkum a vývoj metod chemické a fyzikálně chemické analýzy pro studium přírody a pokročilé technologie

Citovat

BREITER, Karel; Michaela VAŠINOVÁ GALIOVÁ; Michaela HLOŽKOVÁ; Zuzana KORBELOVÁ; Jindřich KYNICKÝ a Hilton TULIO COSTI. Trace element composition of micas from rare-metal granites of different geochemical affiliations. Lithos. Elsevier, 2023, roč. 446-447, June, s. 1-22. ISSN 0024-4937. Dostupné z: https://doi.org/10.1016/j.lithos.2023.107135.

@article{2271057,
   author = {Breiter, Karel and Vašinová Galiová, Michaela and Hložková, Michaela and Korbelová, Zuzana and Kynický, Jindřich and Tulio Costi, Hilton},
   article_number = {June},
   doi = {https://doi.org/10.1016/j.lithos.2023.107135},
   keywords = {Mica chemistry; Rare-metal granite; Laser-ablation ICP-MS mineral analysis},
   language = {eng},
   issn = {0024-4937},
   journal = {Lithos},
   title = {Trace element composition of micas from rare-metal granites of different geochemical affiliations},
   url = {https://doi.org/10.1016/j.lithos.2023.107135},
   volume = {446-447},
   year = {2023}
}

TY  - JOUR
ID  - 2271057
AU  - Breiter, Karel - Vašinová Galiová, Michaela - Hložková, Michaela - Korbelová, Zuzana - Kynický, Jindřich - Tulio Costi, Hilton
PY  - 2023
TI  - Trace element composition of micas from rare-metal granites of different geochemical affiliations
JF  - Lithos
VL  - 446-447
IS  - June
SP  - 1-22
EP  - 1-22
PB  - Elsevier
SN  - 00244937
KW  - Mica chemistry
KW  - Rare-metal granite
KW  - Laser-ablation ICP-MS mineral analysis
UR  - https://doi.org/10.1016/j.lithos.2023.107135
N2  - About 2600 spot analyses of mica (combined electron microprobe and laser ablation ICP-MS) from 120 samples from eight rare-metal granite (RMG) plutons of different geochemical affiliations were performed to characterize the contents of major (Si, Ti, Al, Fe, Mn, Mg, Ca, Na, K, F), minor (Li, Rb, Zn), and trace elements (Sc, Nb, Sn, Cs, Ta, W). This allowed to constrain changes in mica chemistry during magma fractionation and to characterize the relation between the trace-element spectra in mica and geochemical specializations of parental granites. The studied samples covered metaluminous to peralkaline A-type granites of the Madeira pluton (Brazil), metaluminous to peraluminous A-type granites (Kimi, Finland; Orlovka, Russia; Cínovec, Czech Republic) and strongly peraluminous S-type granites (Panasqueira and Argemela, Portugal; Beauvoir, France; Nejdek, Czech Republic). Micas from non-mineralized S- and I-type granitoids from the Czech Republic were analyzed for comparison. For the monitored rare metals, the maximum contents are 1200 ppm Sn (Madeira), 350 ppm W (Beauvoir, Nejdek), 2300 ppm Nb (Madeira) and 200 ppm Ta (Orlovka, Cínovec and Nejdek); Sc reaches maximally 300 ppm at Orlovka. Micas from peraluminous RMG are generally rather enriched in W and Cs, while micas from subaluminous A-type granites are relatively enriched in Nb and Sc. Micas from the studied peralkaline rocks are rich in Nb and poor in Cs, Sc and W. With increasing fractionation of the parental magma, the contents of F, Li, and Rb in mica increase, while the contents of high-field-strength elements (HFSE) usually decrease. This can be attributed to the crystallization of late Li-mica after the HFSE accessories rather than to the effect of the mica crystal structure. Micas affected by high-temperature hydrothermal events are usually completely re-equilibrated. By contrast, low-temperature muscovitization connected with washing out of Li and an increase in Sn affected only rims of mica flakes, leaving crystal cores in their original composition. In a succession from early biotite granites to late Li-mica granites, the share of mica in bulk Sn, Nb and Ta contents in the rocks decreases (50–80 → 5–10%, 10–80 → 1–10% and 100 → <5%, respectively), and rutile, cassiterite and columbite/pyrochlore become the main hosts of rare metals.
ER  -

BREITER, Karel; Michaela VAŠINOVÁ GALIOVÁ; Michaela HLOŽKOVÁ; Zuzana KORBELOVÁ; Jindřich KYNICKÝ a Hilton TULIO COSTI. Trace element composition of micas from rare-metal granites of different geochemical affiliations. \textit{Lithos}. Elsevier, 2023, roč.~446-447, June, s.~1-22. ISSN~0024-4937. Dostupné z: https://doi.org/10.1016/j.lithos.2023.107135.

Přehled o publikaci