The recent weathering of uraninite from the Cervena vein,
Jachymov (Czech Republic): a fingerprint of the primary
mineralization geochemistry onto the alteration association

J 2014

The recent weathering of uraninite from the Cervena vein, Jachymov (Czech Republic): a fingerprint of the primary mineralization geochemistry onto the alteration association

PLÁŠIL, Jakub; Jiří SEJKORA; Radek ŠKODA a Pavel ŠKACHA

Základní údaje

Originální název

The recent weathering of uraninite from the Cervena vein, Jachymov (Czech Republic): a fingerprint of the primary mineralization geochemistry onto the alteration association

Autoři

PLÁŠIL, Jakub; Jiří SEJKORA; Radek ŠKODA a Pavel ŠKACHA

Vydání

Journal of Geosciences, Praha, Czech geol.Soc, 2014, 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: 1.405

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/14:00080023

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

uraninite; supergene weathering; acid-mine drainage; mineral data; X-ray diffraction; bond-valence approach

Štítky

AKR, rivok

Změněno: 13. 4. 2015 15:31, Ing. Andrea Mikešková

Anotace

V originále

Uraninite and the supergene minerals from the Cervena hydrothermal uranium vein (Jachymov ore district, Czech Republic) were studied. These supergene minerals represent alteration products of the joint weathering of uraninite and hypogene sulfide minerals, connected to the acid-mine drainage (AMD) systems. The complex geochemistry of the hypogene mineralization provided a unique environment for formation of chemically diverse supergene phases. Among other features, the weathering system is characterized by the high activity of Cu2+ and REE, which control the composition of the resulting supergene minerals: commonly occurring are Cu-dominant uranyl sulfates of the zippeite group (pseudojohannite, Cu-rabejacite), Cu-dominant uranyl silicates (cuprosklodowksite) or Y- and REE-containing uranyl-sulfate mineral sejkoraite-(Y). The high activity of Cu2+ and REE is also reflected by the fact that both elements enter minerals, which are nominally Cu- or REE-free (marecottite, rabejacite, tyuyamunite, and compreignacite). The alteration association was evaluated with regard to the crystal-chemical properties of each mineral using the bond-valence approach, documenting distinct evolutionary trends during weathering.

Citovat

PLÁŠIL, Jakub; Jiří SEJKORA; Radek ŠKODA a Pavel ŠKACHA. The recent weathering of uraninite from the Cervena vein, Jachymov (Czech Republic): a fingerprint of the primary mineralization geochemistry onto the alteration association. Journal of Geosciences. Praha: Czech geol.Soc, 2014, roč. 59, č. 3, s. 223-253. ISSN 1802-6222. Dostupné z: https://doi.org/10.3190/jgeosci.171.

@article{1297337,
   author = {Plášil, Jakub and Sejkora, Jiří and Škoda, Radek and Škacha, Pavel},
   article_location = {Praha},
   article_number = {3},
   doi = {https://doi.org/10.3190/jgeosci.171},
   keywords = {uraninite; supergene weathering; acid-mine drainage; mineral data; X-ray diffraction; bond-valence approach},
   language = {eng},
   issn = {1802-6222},
   journal = {Journal of Geosciences},
   title = {The recent weathering of uraninite from the Cervena vein, Jachymov (Czech Republic): a fingerprint of the primary mineralization geochemistry onto the alteration association},
   volume = {59},
   year = {2014}
}

TY  - JOUR
ID  - 1297337
AU  - Plášil, Jakub - Sejkora, Jiří - Škoda, Radek - Škacha, Pavel
PY  - 2014
TI  - The recent weathering of uraninite from the Cervena vein, Jachymov (Czech Republic): a fingerprint of the primary mineralization geochemistry onto the alteration association
JF  - Journal of Geosciences
VL  - 59
IS  - 3
SP  - 223-253
EP  - 223-253
PB  - Czech geol.Soc
SN  - 18026222
KW  - uraninite
KW  - supergene weathering
KW  - acid-mine drainage
KW  - mineral data
KW  - X-ray diffraction
KW  - bond-valence approach
N2  - Uraninite and the supergene minerals from the Cervena hydrothermal uranium vein (Jachymov ore district, Czech Republic) were studied. These supergene minerals represent alteration products of the joint weathering of uraninite and hypogene sulfide minerals, connected to the acid-mine drainage (AMD) systems. The complex geochemistry of the hypogene mineralization provided a unique environment for formation of chemically diverse supergene phases. Among other features, the weathering system is characterized by the high activity of Cu2+ and REE, which control the composition of the resulting supergene minerals: commonly occurring are Cu-dominant uranyl sulfates of the zippeite group (pseudojohannite, Cu-rabejacite), Cu-dominant uranyl silicates (cuprosklodowksite) or Y- and REE-containing uranyl-sulfate mineral sejkoraite-(Y). The high activity of Cu2+ and REE is also reflected by the fact that both elements enter minerals, which are nominally Cu- or REE-free (marecottite, rabejacite, tyuyamunite, and compreignacite). The alteration association was evaluated with regard to the crystal-chemical properties of each mineral using the bond-valence approach, documenting distinct evolutionary trends during weathering.
ER  -

PLÁŠIL, Jakub; Jiří SEJKORA; Radek ŠKODA a Pavel ŠKACHA. The recent weathering of uraninite from the Cervena vein, Jachymov (Czech Republic): a fingerprint of the primary mineralization geochemistry onto the alteration association. \textit{Journal of Geosciences}. Praha: Czech geol.Soc, 2014, roč.~59, č.~3, s.~223-253. ISSN~1802-6222. Dostupné z: https://doi.org/10.3190/jgeosci.171.

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