Plavnoite, a new K-Mn member of the zippeite group from
Jachymov, Czech Republic

J 2017

Plavnoite, a new K-Mn member of the zippeite group from Jachymov, Czech Republic

PLÁŠIL, Jakub, Pavel ŠKACHA, Jiří SEJKORA, Antony KAMPF, Radek ŠKODA et. al.

Základní údaje

Originální název

Plavnoite, a new K-Mn member of the zippeite group from Jachymov, Czech Republic

Autoři

PLÁŠIL, Jakub (203 Česká republika), Pavel ŠKACHA (203 Česká republika), Jiří SEJKORA (203 Česká republika), Antony KAMPF (840 Spojené státy), Radek ŠKODA (203 Česká republika, garant, domácí), Jiří ČEJKA (203 Česká republika), Jan HLOUŠEK (203 Česká republika), Anatoly KASATKIN (643 Rusko), Radim PAVLÍČEK (203 Česká republika) a Karel BABKA (203 Česká republika)

Vydání

European Journal of Mineralogy, STUTTGART, E SCHWEIZERBARTSCHE VERLAGSBUCHHANDLUNG, SCIENCE PUBLISHERS, 2017, 0935-1221

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10504 Mineralogy

Stát vydavatele

Německo

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 1.190

Kód RIV

RIV/00216224:14310/17:00100327

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1127/ejm/2017/0029-2583

UT WoS

000396823700010

Klíčová slova anglicky

plavnoite; uranyl sulfate hydrate; new mineral; zippeite group; crystal structure; chemical composition

Štítky

NZ, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 10. 4. 2018 16:52, Ing. Nicole Zrilić

Anotace

V originále

The new mineral plavnoite (IMA2015-059), ideally K0.8Mn0.6[(UO2)(2)O-2(SO4)]center dot 3.5H(2)O, is a member of the zippeite group. It was found in the Plavno mine, in the eastern part of the Jachymov ore district, Western Bohemia, Czech Republic, where it occurs as a supergene alteration phase formed by hydration-oxidation weathering of uraninite in hydrothermal U-veins. It was found to be associated with marecottite, magnesiozippeite, blatonite and gypsum. The mineral occurs as reddish to reddish-orange thin blades, elongated on [0 0 1] and flattened on {0 1 0}, which are intergrown in globular aggregates up to 0.5 mm across. Crystals are transparent with a vitreous to silky lustre. The streak is pale orange. The mineral is non-fluorescent under both long- and short-wave ultraviolet (UV) radiation. The Mohs hardness is about 2. Crystals are brittle with perfect {0 1 0} cleavage and uneven fracture. The density calculated from the empirical formula is 4.926 g cm(-3). Optically, plavnoite is biaxial (+), with alpha = 1.740(5), beta = 1.770(5), gamma = 1.850(5) (measured in white light). The measured 2V is 64.6(4)degrees; the calculated 2V is 65.3 degrees. Dispersion could not be observed; no pleochroism was observed. Electron-microprobe analyses yielded the empirical formula (based on 2 U atoms per formula unit,apfu) K-0.77(Mn0.51Zn0.04Ni0.03Mg0.02)(Sigma 0.60)[(UO2)(2)O-1.08(OH)(0.92)(SO4)(0.96)(SiO4)(0.24)](H2O)(3.50). Plavnoite is monoclinic, C2/c, a = 8.6254 (16), b = 14.258(3), c = 17.703(4) angstrom, beta = 104.052(18)degrees, V = 2122.0(8) angstrom(3) and Z = 8. The structure (R-1 = 4.99% for 989 reflections with 1 > 3 sigma[I]) contains UO7 pentagonal bipyramids and SO4 tetrahedra forming sheets of the well-known zippeite topology. The interlayer region contains infinite zig-zag chains of corner-sharing Mn2+phi(6) octahedra (phi=O, H2O) with K-centred polyhedra. The K atom sits at the partially occupied, mixed K/O site, the non-shared corner of the Mn2 octahedron. The mineral is named after the type locality - the Plavno mine.

Návaznosti

MUNI/A/1316/2015, interní kód MU

Název: Geologické, geodynamické a environmentální procesy východního okraje Českého masívu (Akronym: Geodyn)

Investor: Masarykova univerzita, Geologické, geodynamické a environmentální procesy východního okraje Českého masívu, DO R. 2020_Kategorie A - Specifický výzkum - Studentské výzkumné projekty

Citovat

PLÁŠIL, Jakub, Pavel ŠKACHA, Jiří SEJKORA, Antony KAMPF, Radek ŠKODA, Jiří ČEJKA, Jan HLOUŠEK, Anatoly KASATKIN, Radim PAVLÍČEK a Karel BABKA. Plavnoite, a new K-Mn member of the zippeite group from Jachymov, Czech Republic. European Journal of Mineralogy. STUTTGART: E SCHWEIZERBARTSCHE VERLAGSBUCHHANDLUNG, SCIENCE PUBLISHERS, 2017, roč. 29, č. 1, s. 117-128. ISSN 0935-1221. Dostupné z: https://dx.doi.org/10.1127/ejm/2017/0029-2583.

@article{1410985,
   author = {Plášil, Jakub and Škacha, Pavel and Sejkora, Jiří and Kampf, Antony and Škoda, Radek and Čejka, Jiří and Hloušek, Jan and Kasatkin, Anatoly and Pavlíček, Radim and Babka, Karel},
   article_location = {STUTTGART},
   article_number = {1},
   doi = {http://dx.doi.org/10.1127/ejm/2017/0029-2583},
   keywords = {plavnoite; uranyl sulfate hydrate; new mineral; zippeite group; crystal structure; chemical composition},
   language = {eng},
   issn = {0935-1221},
   journal = {European Journal of Mineralogy},
   title = {Plavnoite, a new K-Mn member of the zippeite group from Jachymov, Czech Republic},
   volume = {29},
   year = {2017}
}

TY  - JOUR
ID  - 1410985
AU  - Plášil, Jakub - Škacha, Pavel - Sejkora, Jiří - Kampf, Antony - Škoda, Radek - Čejka, Jiří - Hloušek, Jan - Kasatkin, Anatoly - Pavlíček, Radim - Babka, Karel
PY  - 2017
TI  - Plavnoite, a new K-Mn member of the zippeite group from Jachymov, Czech Republic
JF  - European Journal of Mineralogy
VL  - 29
IS  - 1
SP  - 117-128
EP  - 117-128
PB  - E SCHWEIZERBARTSCHE VERLAGSBUCHHANDLUNG, SCIENCE PUBLISHERS
SN  - 09351221
KW  - plavnoite
KW  - uranyl sulfate hydrate
KW  - new mineral
KW  - zippeite group
KW  - crystal structure
KW  - chemical composition
N2  - The new mineral plavnoite (IMA2015-059), ideally K0.8Mn0.6[(UO2)(2)O-2(SO4)]center dot 3.5H(2)O, is a member of the zippeite group. It was found in the Plavno mine, in the eastern part of the Jachymov ore district, Western Bohemia, Czech Republic, where it occurs as a supergene alteration phase formed by hydration-oxidation weathering of uraninite in hydrothermal U-veins. It was found to be associated with marecottite, magnesiozippeite, blatonite and gypsum. The mineral occurs as reddish to reddish-orange thin blades, elongated on [0 0 1] and flattened on {0 1 0}, which are intergrown in globular aggregates up to 0.5 mm across. Crystals are transparent with a vitreous to silky lustre. The streak is pale orange. The mineral is non-fluorescent under both long- and short-wave ultraviolet (UV) radiation. The Mohs hardness is about 2. Crystals are brittle with perfect {0 1 0} cleavage and uneven fracture. The density calculated from the empirical formula is 4.926 g cm(-3). Optically, plavnoite is biaxial (+), with alpha = 1.740(5), beta = 1.770(5), gamma = 1.850(5) (measured in white light). The measured 2V is 64.6(4)degrees; the calculated 2V is 65.3 degrees. Dispersion could not be observed; no pleochroism was observed. Electron-microprobe analyses yielded the empirical formula (based on 2 U atoms per formula unit,apfu) K-0.77(Mn0.51Zn0.04Ni0.03Mg0.02)(Sigma 0.60)[(UO2)(2)O-1.08(OH)(0.92)(SO4)(0.96)(SiO4)(0.24)](H2O)(3.50). Plavnoite is monoclinic, C2/c, a = 8.6254 (16), b = 14.258(3), c = 17.703(4) angstrom, beta = 104.052(18)degrees, V = 2122.0(8) angstrom(3) and Z = 8. The structure (R-1 = 4.99% for 989 reflections with 1 > 3 sigma[I]) contains UO7 pentagonal bipyramids and SO4 tetrahedra forming sheets of the well-known zippeite topology. The interlayer region contains infinite zig-zag chains of corner-sharing Mn2+phi(6) octahedra (phi=O, H2O) with K-centred polyhedra. The K atom sits at the partially occupied, mixed K/O site, the non-shared corner of the Mn2 octahedron. The mineral is named after the type locality - the Plavno mine.
ER  -

PLÁŠIL, Jakub, Pavel ŠKACHA, Jiří SEJKORA, Antony KAMPF, Radek ŠKODA, Jiří ČEJKA, Jan HLOUŠEK, Anatoly KASATKIN, Radim PAVLÍČEK a Karel BABKA. Plavnoite, a new K-Mn member of the zippeite group from Jachymov, Czech Republic. \textit{European Journal of Mineralogy}. STUTTGART: E SCHWEIZERBARTSCHE VERLAGSBUCHHANDLUNG, SCIENCE PUBLISHERS, 2017, roč.~29, č.~1, s.~117-128. ISSN~0935-1221. Dostupné z: https://dx.doi.org/10.1127/ejm/2017/0029-2583.

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