Monazite-(Gd), a new Gd-dominant mineral of the monazite group
from the Zimná Voda REE–U–Au quartz vein, Prakovce, Western
Carpathians, Slovakia

J 2023

Monazite-(Gd), a new Gd-dominant mineral of the monazite group from the Zimná Voda REE–U–Au quartz vein, Prakovce, Western Carpathians, Slovakia

ONDREJKA, Martin, Pavel UHER, Štefan FERENC, Juraj MAJZLAN, Kilian POLLOK et. al.

Základní údaje

Originální název

Monazite-(Gd), a new Gd-dominant mineral of the monazite group from the Zimná Voda REE–U–Au quartz vein, Prakovce, Western Carpathians, Slovakia

Autoři

ONDREJKA, Martin, Pavel UHER, Štefan FERENC, Juraj MAJZLAN, Kilian POLLOK, Tomáš MIKUŠ, Stanislava MILOVSKÁ, Alexandra MOLNÁROVÁ, Radek ŠKODA (203 Česká republika, domácí), Richard KOPÁČIK, Sergii KURYLO a Peter BAČÍK

Vydání

Mineralogical Magazine, London, Cambridge University Press, 2023, 0026-461X

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10504 Mineralogy

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 2.700 v roce 2022

Kód RIV

RIV/00216224:14310/23:00133039

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1180/mgm.2023.37

UT WoS

001036300100001

Klíčová slova anglicky

monazite-(Gd); new mineral; monazite group; gadolinium; rare earth elements; Zimná Voda quartz vein; Slovakia

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 16. 1. 2024 10:20, Mgr. Marie Šípková, DiS.

Anotace

V originále

Monazite-(Gd), ideally GdPO4, is a new mineral of the monazite group. It was discovered near Prakovce-Zimna Voda, similar to 23 km WNW of Kosice, Western Carpathians, Slovakia. It forms anhedral domains (<= 100 mu m, mostly 10-50 mu m in size), in close association with monazite-(Sm), Gd-bearing xenotime-(Y), Gd-bearing hingganite-(Y), fluorapatite and uraninite. All these minerals are hosted in a REE-U-Au quartz-muscovite vein, hosted in phyllites in an exocontact to granites. The density calculated using the average empirical formula and unit-cell parameters is 5.55 g/cm(3). The average chemical composition measured by means of electron microprobe is as follows (wt.%): P2O5 29.68, As2O5 0.15, SiO2 0.07, ThO2 0.01, UO2 0.04, Y2O3 1.30, La2O3 3.19, Ce2O3 6.93, Pr2O3 1.12, Nd2O3 10.56, Sm2O3 17.36, Eu2O3 1.49, Gd2O3 22.84, Tb2O3 1.57, Dy2O3 2.27, CaO 0.21, total 99.67. The corresponding empirical formula calculated on the basis of 4 oxygen atoms is: (Gd0.30Sm0.24Nd0.15Ce0.10La0.05Dy0.03Y0.03Tb0.02Eu0.02Pr0.02Ca0.01)(0.98)P1.01O4. The ideal formula is GdPO4. The monazite-type structure has been confirmed by micro-Raman spectroscopy and selected-area electron diffraction. Monazite-(Gd) is monoclinic, space group P2(1)/n, a = 6.703(1) angstrom, b = 6.914(1) angstrom, c = 6.383(1) angstrom, beta = 103.8(1)degrees, V = 287.3(1) angstrom(3) and Z = 4. The middle REE enrichment of monazite-(Gd) is shared with the associated Gd-bearing xenotime-(Y) to 'xenotime-(Gd)' and Gd-bearing hingganite-(Y). This exotic REE signature and precipitation of Gd-bearing mineral assemblage is a product of selective complexing and enrichment in middle REE in low-temperature hydrothermal fluids by alteration of primary uraninite, brannerite and fluorapatite on a micro-scale. The new mineral is named as an analogue of monazite-(La), monazite-(Ce), monazite-(Nd) and monazite-(Sm) but with Gd dominant among the REE.

Návaznosti

EF16_026/0008459, projekt VaV

Název: Dlouhodobý výzkum geochemických bariér pro ukládání jaderného odpadu

Citovat

ONDREJKA, Martin, Pavel UHER, Štefan FERENC, Juraj MAJZLAN, Kilian POLLOK, Tomáš MIKUŠ, Stanislava MILOVSKÁ, Alexandra MOLNÁROVÁ, Radek ŠKODA, Richard KOPÁČIK, Sergii KURYLO a Peter BAČÍK. Monazite-(Gd), a new Gd-dominant mineral of the monazite group from the Zimná Voda REE–U–Au quartz vein, Prakovce, Western Carpathians, Slovakia. Mineralogical Magazine. London: Cambridge University Press, 2023, roč. 87, č. 4, s. 568-574. ISSN 0026-461X. Dostupné z: https://dx.doi.org/10.1180/mgm.2023.37.

@article{2361506,
   author = {Ondrejka, Martin and Uher, Pavel and Ferenc, Štefan and Majzlan, Juraj and Pollok, Kilian and Mikuš, Tomáš and Milovská, Stanislava and Molnárová, Alexandra and Škoda, Radek and Kopáčik, Richard and Kurylo, Sergii and Bačík, Peter},
   article_location = {London},
   article_number = {4},
   doi = {http://dx.doi.org/10.1180/mgm.2023.37},
   keywords = {monazite-(Gd); new mineral; monazite group; gadolinium; rare earth elements; Zimná Voda quartz vein; Slovakia},
   language = {eng},
   issn = {0026-461X},
   journal = {Mineralogical Magazine},
   title = {Monazite-(Gd), a new Gd-dominant mineral of the monazite group from the Zimná Voda REE–U–Au quartz vein, Prakovce, Western Carpathians, Slovakia},
   url = {https://doi.org/10.1180/mgm.2023.37},
   volume = {87},
   year = {2023}
}

TY  - JOUR
ID  - 2361506
AU  - Ondrejka, Martin - Uher, Pavel - Ferenc, Štefan - Majzlan, Juraj - Pollok, Kilian - Mikuš, Tomáš - Milovská, Stanislava - Molnárová, Alexandra - Škoda, Radek - Kopáčik, Richard - Kurylo, Sergii - Bačík, Peter
PY  - 2023
TI  - Monazite-(Gd), a new Gd-dominant mineral of the monazite group from the Zimná Voda REE–U–Au quartz vein, Prakovce, Western Carpathians, Slovakia
JF  - Mineralogical Magazine
VL  - 87
IS  - 4
SP  - 568-574
EP  - 568-574
PB  - Cambridge University Press
SN  - 0026461X
KW  - monazite-(Gd)
KW  - new mineral
KW  - monazite group
KW  - gadolinium
KW  - rare earth elements
KW  - Zimná Voda quartz vein
KW  - Slovakia
UR  - https://doi.org/10.1180/mgm.2023.37
N2  - Monazite-(Gd), ideally GdPO4, is a new mineral of the monazite group. It was discovered near Prakovce-Zimna Voda, similar to 23 km WNW of Kosice, Western Carpathians, Slovakia. It forms anhedral domains (<= 100 mu m, mostly 10-50 mu m in size), in close association with monazite-(Sm), Gd-bearing xenotime-(Y), Gd-bearing hingganite-(Y), fluorapatite and uraninite. All these minerals are hosted in a REE-U-Au quartz-muscovite vein, hosted in phyllites in an exocontact to granites. The density calculated using the average empirical formula and unit-cell parameters is 5.55 g/cm(3). The average chemical composition measured by means of electron microprobe is as follows (wt.%): P2O5 29.68, As2O5 0.15, SiO2 0.07, ThO2 0.01, UO2 0.04, Y2O3 1.30, La2O3 3.19, Ce2O3 6.93, Pr2O3 1.12, Nd2O3 10.56, Sm2O3 17.36, Eu2O3 1.49, Gd2O3 22.84, Tb2O3 1.57, Dy2O3 2.27, CaO 0.21, total 99.67. The corresponding empirical formula calculated on the basis of 4 oxygen atoms is: (Gd0.30Sm0.24Nd0.15Ce0.10La0.05Dy0.03Y0.03Tb0.02Eu0.02Pr0.02Ca0.01)(0.98)P1.01O4. The ideal formula is GdPO4. The monazite-type structure has been confirmed by micro-Raman spectroscopy and selected-area electron diffraction. Monazite-(Gd) is monoclinic, space group P2(1)/n, a = 6.703(1) angstrom, b = 6.914(1) angstrom, c = 6.383(1) angstrom, beta = 103.8(1)degrees, V = 287.3(1) angstrom(3) and Z = 4. The middle REE enrichment of monazite-(Gd) is shared with the associated Gd-bearing xenotime-(Y) to 'xenotime-(Gd)' and Gd-bearing hingganite-(Y). This exotic REE signature and precipitation of Gd-bearing mineral assemblage is a product of selective complexing and enrichment in middle REE in low-temperature hydrothermal fluids by alteration of primary uraninite, brannerite and fluorapatite on a micro-scale. The new mineral is named as an analogue of monazite-(La), monazite-(Ce), monazite-(Nd) and monazite-(Sm) but with Gd dominant among the REE.
ER  -

ONDREJKA, Martin, Pavel UHER, Štefan FERENC, Juraj MAJZLAN, Kilian POLLOK, Tomáš MIKUŠ, Stanislava MILOVSKÁ, Alexandra MOLNÁROVÁ, Radek ŠKODA, Richard KOPÁČIK, Sergii KURYLO a Peter BAČÍK. Monazite-(Gd), a new Gd-dominant mineral of the monazite group from the Zimná Voda REE–U–Au quartz vein, Prakovce, Western Carpathians, Slovakia. \textit{Mineralogical Magazine}. London: Cambridge University Press, 2023, roč.~87, č.~4, s.~568-574. ISSN~0026-461X. Dostupné z: https://dx.doi.org/10.1180/mgm.2023.37.

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