Paulišite, Ca2Zn(CO3)3·2H2O, a new mineral with a novel crystal
structure

J 2025

Paulišite, Ca2Zn(CO3)3·2H2O, a new mineral with a novel crystal structure

SEJKORA, Jiří; Cristian BIAGIONI; Zdeněk DOLNÍČEK; Radek ŠKODA; Jana EDEROVÁ et. al.

Základní údaje

Originální název

Paulišite, Ca2Zn(CO3)3·2H2O, a new mineral with a novel crystal structure

Autoři

SEJKORA, Jiří; Cristian BIAGIONI; Zdeněk DOLNÍČEK; Radek ŠKODA a Jana EDEROVÁ

Vydání

American Mineralogist, Mineralogical Society of America, 2025, 0003-004X

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10504 Mineralogy

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 2.300 v roce 2024

Organizační jednotka

Přírodovědecká fakulta

DOI

https://doi.org/10.2138/am-2024-9418

UT WoS

001437504800010

EID Scopus

2-s2.0-105000465908

Klíčová slova anglicky

carbonate; crystal structure; Czech Republic; Kaňk near Kutná Hora; new mineral; Paulišite; zinc

Štítky

14315010, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 15. 4. 2025 10:16, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Paulišite, Ca2Zn(CO3)3·2H2O, is a new mineral species discovered in the underground workings at the abandoned mine adit of the first level of the Staročeské Lode, near the historical shaft Šafary, Kaňk near Kutná Hora, central Bohemia, Czech Republic. Paulišite is associated with hydrozincite and aragonite (holotype sample) or calcite, aragonite, hydrozincite, and monohydrocalcite (other samples). The new mineral occurs as crusts, up to 1 cm thick, formed by parallel or radial aggregates of acicular crystals, elongated on [100], up to 5 mm long. Paulišite is colorless to white, with a white streak. It is transparent and has a vitreous luster. Mohs hardness is ca. 4; the calculated density is 2.756 g/cm3. Paulišite is optically biaxial positive, with α = 1.554(1), β = 1.569(2), γ= 1.605(1) (589 nm), and 2V(meas) = 68(2)°. The empirical formula, based on electron-microprobe analyses (n = 11), is Ca2.00(Zn0.97Mg0.02 Cu0.01Al0.01)σ1.01(CO3)3·2H2O based on three cations (excluding C) per formula unit. The ideal formula is Ca2Zn(CO3)3·2H2O, which requires (in wt%) CaO 31.02, ZnO 22.50, CO2 36.51, H2O 9.97, total 100.00. The strongest reflections of the powder X-ray diffraction pattern [d (Å)/(Irel)/hkl] are: 8.226/(100)/011, 6.492/(100)/002, 4.112/(18)/022, 3.246/(35)/004, 3.085/(19)/130, and 2.458/(21)/042. According to single-crystal X-ray diffraction data, paulišite is monoclinic, space group Ia, Z = 4 with a = 6.3007(6), b = 10.6236(11), c = 12.9837(12) Å, β = 90.840(5)°, V = 868.99(15) Å3. The crystal structure was refined to R1 = 0.0229 for 2330 unique reflections with F o > 4σ(Fo) and 164 refined parameters. It is characterized by Zn(1)-centered tetrahedra, two independent Ca(1)- and Ca(2)-centered polyhedra, and CO3 groups. Heteropolyhedral Ca-Zn-CO3 {001} layers occur in paulišite and are connected along c through CO3 groups and Ca(2)-centered polyhedra, as well as H-bonds. Along with minrecordite, skorpionite, and znucalite, paulišite is the fourth mineral containing Ca, Zn, and (CO3) groups as species-defining elements. Its origin is related to the supergene alteration of ore deposits following the mining activity, probably at low T and basic pH conditions. The mineral and its name, honoring the Czech mineralogist and geologist Petr Pauliš (b. 1956), have been approved by the Commission on New Minerals, Nomenclature and Classification of the International Mineralogical Association (no. 2023-031).

Citovat

SEJKORA, Jiří; Cristian BIAGIONI; Zdeněk DOLNÍČEK; Radek ŠKODA a Jana EDEROVÁ. Paulišite, Ca2Zn(CO3)3·2H2O, a new mineral with a novel crystal structure. American Mineralogist. Mineralogical Society of America, 2025, roč. 110, č. 3, s. 480-488. ISSN 0003-004X. Dostupné z: https://doi.org/10.2138/am-2024-9418.

@article{2491222,
   author = {Sejkora, Jiří and Biagioni, Cristian and Dolníček, Zdeněk and Škoda, Radek and Ederová, Jana},
   article_number = {3},
   doi = {https://doi.org/10.2138/am-2024-9418},
   keywords = {carbonate; crystal structure; Czech Republic; Kaňk near Kutná Hora; new mineral; Paulišite; zinc},
   language = {eng},
   issn = {0003-004X},
   journal = {American Mineralogist},
   title = {Paulišite, Ca2Zn(CO3)3·2H2O, a new mineral with a novel crystal structure},
   url = {https://doi.org/10.2138/am-2024-9418},
   volume = {110},
   year = {2025}
}

TY  - JOUR
ID  - 2491222
AU  - Sejkora, Jiří - Biagioni, Cristian - Dolníček, Zdeněk - Škoda, Radek - Ederová, Jana
PY  - 2025
TI  - Paulišite, Ca2Zn(CO3)3·2H2O, a new mineral with a novel crystal structure
JF  - American Mineralogist
VL  - 110
IS  - 3
SP  - 480-488
EP  - 480-488
PB  - Mineralogical Society of America
SN  - 0003004X
KW  - carbonate
KW  - crystal structure
KW  - Czech Republic
KW  - Kaňk near Kutná Hora
KW  - new mineral
KW  - Paulišite
KW  - zinc
UR  - https://doi.org/10.2138/am-2024-9418
N2  - Paulišite, Ca2Zn(CO3)3·2H2O, is a new mineral species discovered in the underground workings at the abandoned mine adit of the first level of the Staročeské Lode, near the historical shaft Šafary, Kaňk near Kutná Hora, central Bohemia, Czech Republic. Paulišite is associated with hydrozincite and aragonite (holotype sample) or calcite, aragonite, hydrozincite, and monohydrocalcite (other samples). The new mineral occurs as crusts, up to 1 cm thick, formed by parallel or radial aggregates of acicular crystals, elongated on [100], up to 5 mm long. Paulišite is colorless to white, with a white streak. It is transparent and has a vitreous luster. Mohs hardness is ca. 4; the calculated density is 2.756 g/cm3. Paulišite is optically biaxial positive, with α = 1.554(1), β = 1.569(2), γ= 1.605(1) (589 nm), and 2V(meas) = 68(2)°. The empirical formula, based on electron-microprobe analyses (n = 11), is Ca2.00(Zn0.97Mg0.02 Cu0.01Al0.01)σ1.01(CO3)3·2H2O based on three cations (excluding C) per formula unit. The ideal formula is Ca2Zn(CO3)3·2H2O, which requires (in wt%) CaO 31.02, ZnO 22.50, CO2 36.51, H2O 9.97, total 100.00. The strongest reflections of the powder X-ray diffraction pattern [d (Å)/(Irel)/hkl] are: 8.226/(100)/011, 6.492/(100)/002, 4.112/(18)/022, 3.246/(35)/004, 3.085/(19)/130, and 2.458/(21)/042. According to single-crystal X-ray diffraction data, paulišite is monoclinic, space group Ia, Z = 4 with a = 6.3007(6), b = 10.6236(11), c = 12.9837(12) Å, β = 90.840(5)°, V = 868.99(15) Å3. The crystal structure was refined to R1 = 0.0229 for 2330 unique reflections with F o > 4σ(Fo) and 164 refined parameters. It is characterized by Zn(1)-centered tetrahedra, two independent Ca(1)- and Ca(2)-centered polyhedra, and CO3 groups. Heteropolyhedral Ca-Zn-CO3 {001} layers occur in paulišite and are connected along c through CO3 groups and Ca(2)-centered polyhedra, as well as H-bonds. Along with minrecordite, skorpionite, and znucalite, paulišite is the fourth mineral containing Ca, Zn, and (CO3) groups as species-defining elements. Its origin is related to the supergene alteration of ore deposits following the mining activity, probably at low T and basic pH conditions. The mineral and its name, honoring the Czech mineralogist and geologist Petr Pauliš (b. 1956), have been approved by the Commission on New Minerals, Nomenclature and Classification of the International Mineralogical Association (no. 2023-031).
ER  -

SEJKORA, Jiří; Cristian BIAGIONI; Zdeněk DOLNÍČEK; Radek ŠKODA a Jana EDEROVÁ. Paulišite, Ca2Zn(CO3)3·2H2O, a new mineral with a novel crystal structure. \textit{American Mineralogist}. Mineralogical Society of America, 2025, roč.~110, č.~3, s.~480-488. ISSN~0003-004X. Dostupné z: https://doi.org/10.2138/am-2024-9418.

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