Evolution of beryllium minerals in granitic pegmatite Maršíkov
D6e, Czech Republic: Complex breakdown of primary beryl by
internal and external hydrothermal-metamorphic fluids

J 2024

Evolution of beryllium minerals in granitic pegmatite Maršíkov D6e, Czech Republic: Complex breakdown of primary beryl by internal and external hydrothermal-metamorphic fluids

CHLADEK, Stepan; Milan NOVÁK; Pavel UHER; Petr GADAS; Dalibor MATYSEK et al.

Základní údaje

Originální název

Evolution of beryllium minerals in granitic pegmatite Maršíkov D6e, Czech Republic: Complex breakdown of primary beryl by internal and external hydrothermal-metamorphic fluids

Autoři

CHLADEK, Stepan; Milan NOVÁK; Pavel UHER; Petr GADAS; Dalibor MATYSEK; Peter BACIK a Radek ŠKODA

Vydání

Geochemistry, MUNICH, Elsevier GmbH, 2024, 0009-2819

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10504 Mineralogy

Stát vydavatele

Německo

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 2.900

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/24:00138745

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

Granitic pegmatite; Beryl; Bertrandite; Bavenite; Bohseite; Milarite; Phenakite; Magmatic stage; Hydrothermal alteration and recrystallization

Štítky

14315030, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 31. 1. 2025 17:51, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Beryllium mineralization was studied by EPMA and XRD techniques in the beryl-columbite pegmatite D6e from the Maršíkov District, Bohemian Massif, Czech Republic. A detailed study of microtextures in BSE images revealed a complex formation of fine-grained secondary Be-silicates at the expense of primary beryl and earlier secondary Be-minerals in the following proximal and distal assemblages: (A) primary magmatic beryl; (B) proximal secondary beryl; (C) proximal bertrandite + K-feldspar and minor muscovite, chamosite, gismondine-Ca and quartz; (D1) proximal assemblages of milarite + gismondine-Ca and bavenite-bohseite + epidote; (D2) distal assemblages on brittle tectonic cracks including milarite, bavenite-bohseite, albite, K-feldspar, quartz and rare phenakite, and (D3) epidote, bavenite-bohseite, quartz, albite, K-feldspar and minor milarite. A formation of secondary Mg,Fe,V,Na-enriched beryl (B) is connected with a mixing of residual (pegmatite) and external Ca,Mg,Fe,V-enriched fluids from the host amphibole gneiss at T ~ 300–400 °C and P ~ 200–400 MPa. The assemblage (C) formed due to an income of K,Mg,Ca-enriched fluids (residual + external) at T ~ 150–300 °C. The subsequent proximal (D1) and distal (D2, D3) assemblages formed during an moderate to strong income of Ca-rich external fluids from the host rocks related to retrograde hydrothermal-metamorphic overprint manifested by the Alpine-type hydrothermal veins. A common presence of epidote in the assemblages with bavenite-bohseite suggests crystallization at T < ~200–300 °C. Detailed textural and paragenetic study of primary and secondary Be-minerals is a useful tool to recognize and study various processes proceeded during subsolidus evolution of granitic pegmatites.

Návaznosti

GA19-05198S, projekt VaV

Název: Greisenizace a albitizace - geologické procesy s potenciálem koncentrovat některé kritické suroviny pro moderní technologie (Akronym: GREISEN)

Investor: Grantová agentura ČR, Greisenizace a albitizace - geologické procesy s potenciálem koncentrovat některé kritické suroviny pro moderní technologie

Citovat

CHLADEK, Stepan; Milan NOVÁK; Pavel UHER; Petr GADAS; Dalibor MATYSEK; Peter BACIK a Radek ŠKODA. Evolution of beryllium minerals in granitic pegmatite Maršíkov D6e, Czech Republic: Complex breakdown of primary beryl by internal and external hydrothermal-metamorphic fluids. Geochemistry. MUNICH: Elsevier GmbH, 2024, roč. 84, č. 2, s. 1-16. ISSN 0009-2819. Dostupné z: https://doi.org/10.1016/j.chemer.2024.126092.

@article{2473053,
   author = {Chladek, Stepan and Novák, Milan and Uher, Pavel and Gadas, Petr and Matysek, Dalibor and Bacik, Peter and Škoda, Radek},
   article_location = {MUNICH},
   article_number = {2},
   doi = {https://doi.org/10.1016/j.chemer.2024.126092},
   keywords = {Granitic pegmatite; Beryl; Bertrandite; Bavenite; Bohseite; Milarite; Phenakite; Magmatic stage; Hydrothermal alteration and recrystallization},
   language = {eng},
   issn = {0009-2819},
   journal = {Geochemistry},
   title = {Evolution of beryllium minerals in granitic pegmatite Maršíkov D6e, Czech Republic: Complex breakdown of primary beryl by internal and external hydrothermal-metamorphic fluids},
   url = {https://www.sciencedirect.com/science/article/pii/S0009281924000163},
   volume = {84},
   year = {2024}
}

TY  - JOUR
ID  - 2473053
AU  - Chladek, Stepan - Novák, Milan - Uher, Pavel - Gadas, Petr - Matysek, Dalibor - Bacik, Peter - Škoda, Radek
PY  - 2024
TI  - Evolution of beryllium minerals in granitic pegmatite Maršíkov D6e, Czech Republic: Complex breakdown of primary beryl by internal and external hydrothermal-metamorphic fluids
JF  - Geochemistry
VL  - 84
IS  - 2
SP  - 1-16
EP  - 1-16
PB  - Elsevier GmbH
SN  - 00092819
KW  - Granitic pegmatite
KW  - Beryl
KW  - Bertrandite
KW  - Bavenite
KW  - Bohseite
KW  - Milarite
KW  - Phenakite
KW  - Magmatic stage
KW  - Hydrothermal alteration and recrystallization
UR  - https://www.sciencedirect.com/science/article/pii/S0009281924000163
N2  - Beryllium mineralization was studied by EPMA and XRD techniques in the beryl-columbite pegmatite D6e from the Maršíkov District, Bohemian Massif, Czech Republic. A detailed study of microtextures in BSE images revealed a complex formation of fine-grained secondary Be-silicates at the expense of primary beryl and earlier secondary Be-minerals in the following proximal and distal assemblages: (A) primary magmatic beryl; (B) proximal secondary beryl; (C) proximal bertrandite + K-feldspar and minor muscovite, chamosite, gismondine-Ca and quartz; (D1) proximal assemblages of milarite + gismondine-Ca and bavenite-bohseite + epidote; (D2) distal assemblages on brittle tectonic cracks including milarite, bavenite-bohseite, albite, K-feldspar, quartz and rare phenakite, and (D3) epidote, bavenite-bohseite, quartz, albite, K-feldspar and minor milarite. A formation of secondary Mg,Fe,V,Na-enriched beryl (B) is connected with a mixing of residual (pegmatite) and external Ca,Mg,Fe,V-enriched fluids from the host amphibole gneiss at T ~ 300–400 °C and P ~ 200–400 MPa. The assemblage (C) formed due to an income of K,Mg,Ca-enriched fluids (residual + external) at T ~ 150–300 °C. The subsequent proximal (D1) and distal (D2, D3) assemblages formed during an moderate to strong income of Ca-rich external fluids from the host rocks related to retrograde hydrothermal-metamorphic overprint manifested by the Alpine-type hydrothermal veins. A common presence of epidote in the assemblages with bavenite-bohseite suggests crystallization at T < ~200–300 °C. Detailed textural and paragenetic study of primary and secondary Be-minerals is a useful tool to recognize and study various processes proceeded during subsolidus evolution of granitic pegmatites.
ER  -

CHLADEK, Stepan; Milan NOVÁK; Pavel UHER; Petr GADAS; Dalibor MATYSEK; Peter BACIK a Radek ŠKODA. Evolution of beryllium minerals in granitic pegmatite Maršíkov D6e, Czech Republic: Complex breakdown of primary beryl by internal and external hydrothermal-metamorphic fluids. \textit{Geochemistry}. MUNICH: Elsevier GmbH, 2024, roč.~84, č.~2, s.~1-16. ISSN~0009-2819. Dostupné z: https://doi.org/10.1016/j.chemer.2024.126092.

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