Octahedral substitution in beryl from weakly fractionated
intragranitic pegmatite Predne Solisko, Tatry Mountains
(Slovakia): the indicator of genetic conditions

J 2019

Octahedral substitution in beryl from weakly fractionated intragranitic pegmatite Predne Solisko, Tatry Mountains (Slovakia): the indicator of genetic conditions

BACIK, P.; J. FRIDRICHOVA; P. UHER; S. RYBAR; V. BIZOVSKA et al.

Základní údaje

Originální název

Octahedral substitution in beryl from weakly fractionated intragranitic pegmatite Predne Solisko, Tatry Mountains (Slovakia): the indicator of genetic conditions

Autoři

BACIK, P.; J. FRIDRICHOVA; P. UHER; S. RYBAR; V. BIZOVSKA; J. LUPTAKOVA; D. VRABLIKOVA; L. PUKANCIK a Tomáš VACULOVIČ

Vydání

Journal of Geosciences, Praha, Česká geologická společnost, 2019, 1802-6222

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10505 Geology

Stát vydavatele

Česká republika

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 1.279

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/19:00113295

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

beryl; crystal chemistry; octahedral substitution; site occupancy; intragranitic pegmatite; High Tatras

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 17. 3. 2020 20:16, Mgr. Pavla Foltynová, Ph.D.

Anotace

V originále

Crystal-chemical properties, and octahedral substitution role in particular, of beryl from weakly fractionated intragranitic pegmatite at Predne Solisko, Vysoke Tatry Mts. (Slovakia) is described in detail. The studied beryl was found in granitic pegmatite derived from biotite I-type granodiorite. It has a weakly zoned core with variable Fe and Mg contents but constantly high Na. The rim zone shows weak irregular chemical zoning with low Na and Mg, the latter dominating over Fe. The total Al content varies between 1.77 and 1.87 apfu; Al is substituted by Fe (0.03-0.07 apfu) and mostly by Mg (0.02-0.13 apfu). The decrease in octahedral site charge is mostly balanced by Na (0.05-0.30 apfu). However, the Na content in the rim is insufficient for balancing octahedral Fe + Mg, implying that at least a part of Fe is ferric. The c/a ratio is typical of "normal" beryl but its low value suggests dominant octahedral substitution. The 2b channel site is occupied by Na, Ca, REE and Sr. At the larger 2a site, Cs is clearly the most abundant (up to 3919 ppm). Water is present as both type I and type II but with large dominance of doubly coordinating H2O type II suggesting relatively fluid-rich genetic environment. The composition of beryl reflects the source rock of pegmatitic melt; I-type granitoids are generally enriched in Mg compared to S-type ones and consequently, the (NaMgC)-Na-C-Mg-O square Al-O(-1)-1 substitution may play a more important role in beryl from I-type derived pegmatites such as Predne Solisko. The geological position of the studied intragranitic pegmatite excludes the possibility of contamination from the host rock and the beryl chemistry, therefore, reflects faithfully the pegmatitic melt composition.

Citovat

BACIK, P.; J. FRIDRICHOVA; P. UHER; S. RYBAR; V. BIZOVSKA; J. LUPTAKOVA; D. VRABLIKOVA; L. PUKANCIK a Tomáš VACULOVIČ. Octahedral substitution in beryl from weakly fractionated intragranitic pegmatite Predne Solisko, Tatry Mountains (Slovakia): the indicator of genetic conditions. Journal of Geosciences. Praha: Česká geologická společnost, 2019, roč. 64, č. 1, s. 59-72. ISSN 1802-6222. Dostupné z: https://doi.org/10.3190/jgeosci.272.

@article{1636944,
   author = {Bacik, P. and Fridrichova, J. and Uher, P. and Rybar, S. and Bizovska, V. and Luptakova, J. and Vrablikova, D. and Pukancik, L. and Vaculovič, Tomáš},
   article_location = {Praha},
   article_number = {1},
   doi = {https://doi.org/10.3190/jgeosci.272},
   keywords = {beryl; crystal chemistry; octahedral substitution; site occupancy; intragranitic pegmatite; High Tatras},
   language = {eng},
   issn = {1802-6222},
   journal = {Journal of Geosciences},
   title = {Octahedral substitution in beryl from weakly fractionated intragranitic pegmatite Predne Solisko, Tatry Mountains (Slovakia): the indicator of genetic conditions},
   url = {http://www.jgeosci.org/content/jgeosci.272_bacik.pdf},
   volume = {64},
   year = {2019}
}

TY  - JOUR
ID  - 1636944
AU  - Bacik, P. - Fridrichova, J. - Uher, P. - Rybar, S. - Bizovska, V. - Luptakova, J. - Vrablikova, D. - Pukancik, L. - Vaculovič, Tomáš
PY  - 2019
TI  - Octahedral substitution in beryl from weakly fractionated intragranitic pegmatite Predne Solisko, Tatry Mountains (Slovakia): the indicator of genetic conditions
JF  - Journal of Geosciences
VL  - 64
IS  - 1
SP  - 59-72
EP  - 59-72
PB  - Česká geologická společnost
SN  - 18026222
KW  - beryl
KW  - crystal chemistry
KW  - octahedral substitution
KW  - site occupancy
KW  - intragranitic pegmatite
KW  - High Tatras
UR  - http://www.jgeosci.org/content/jgeosci.272_bacik.pdf
L2  - http://www.jgeosci.org/content/jgeosci.272_bacik.pdf
N2  - Crystal-chemical properties, and octahedral substitution role in particular, of beryl from weakly fractionated intragranitic pegmatite at Predne Solisko, Vysoke Tatry Mts. (Slovakia) is described in detail. The studied beryl was found in granitic pegmatite derived from biotite I-type granodiorite. It has a weakly zoned core with variable Fe and Mg contents but constantly high Na. The rim zone shows weak irregular chemical zoning with low Na and Mg, the latter dominating over Fe. The total Al content varies between 1.77 and 1.87 apfu; Al is substituted by Fe (0.03-0.07 apfu) and mostly by Mg (0.02-0.13 apfu). The decrease in octahedral site charge is mostly balanced by Na (0.05-0.30 apfu). However, the Na content in the rim is insufficient for balancing octahedral Fe + Mg, implying that at least a part of Fe is ferric. The c/a ratio is typical of "normal" beryl but its low value suggests dominant octahedral substitution. The 2b channel site is occupied by Na, Ca, REE and Sr. At the larger 2a site, Cs is clearly the most abundant (up to 3919 ppm). Water is present as both type I and type II but with large dominance of doubly coordinating H2O type II suggesting relatively fluid-rich genetic environment. The composition of beryl reflects the source rock of pegmatitic melt; I-type granitoids are generally enriched in Mg compared to S-type ones and consequently, the (NaMgC)-Na-C-Mg-O square Al-O(-1)-1 substitution may play a more important role in beryl from I-type derived pegmatites such as Predne Solisko. The geological position of the studied intragranitic pegmatite excludes the possibility of contamination from the host rock and the beryl chemistry, therefore, reflects faithfully the pegmatitic melt composition.
ER  -

BACIK, P.; J. FRIDRICHOVA; P. UHER; S. RYBAR; V. BIZOVSKA; J. LUPTAKOVA; D. VRABLIKOVA; L. PUKANCIK a Tomáš VACULOVIČ. Octahedral substitution in beryl from weakly fractionated intragranitic pegmatite Predne Solisko, Tatry Mountains (Slovakia): the indicator of genetic conditions. \textit{Journal of Geosciences}. Praha: Česká geologická společnost, 2019, roč.~64, č.~1, s.~59-72. ISSN~1802-6222. Dostupné z: https://doi.org/10.3190/jgeosci.272.

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