Marioantofilliite, [Cu4Al2(OH)12](CO3) ⋅ 3H2O, a new member of
the hydrotalcite supergroup from Liguria (Italy)

J 2025

Marioantofilliite, [Cu4Al2(OH)12](CO3) ⋅ 3H2O, a new member of the hydrotalcite supergroup from Liguria (Italy)

BIAGIONI, Cristian; Jiří SEJKORA; Natale PERCHIAZZI; Enrico MUGNAIOLI; Daniela MAURO et. al.

Základní údaje

Originální název

Marioantofilliite, [Cu4Al2(OH)12](CO3) ⋅ 3H2O, a new member of the hydrotalcite supergroup from Liguria (Italy)

Autoři

BIAGIONI, Cristian; Jiří SEJKORA; Natale PERCHIAZZI; Enrico MUGNAIOLI; Daniela MAURO; Donato BELMONTE; Radek ŠKODA a Zdeněk DOLNÍČEK

Vydání

European Journal of Mineralogy, Copernicus Publications, 2025, 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

Odkazy

URL, URL

Impakt faktor

Impact factor: 1.700 v roce 2024

Organizační jednotka

Přírodovědecká fakulta

DOI

https://doi.org/10.5194/ejm-37-733-2025

UT WoS

001592985100001

EID Scopus

2-s2.0-105020008342

Klíčová slova anglicky

Italy; Liguria; minerals; layered douhle hydroxides; crystal-structure; bond-valence; cap garonne; copper; Al; mine; spectroscopy

Štítky

14315010, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 18. 11. 2025 15:06, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Marioantofilliite (IMA 2025-012), ideally [Cu4Al2(OH)12](CO3)· 3H2O, is a new member of the hydrotalcite supergroup discovered in the Cu-Fe ore deposit of Monte Copello-Reppia, Graveglia Valley, Liguria, Italy. It occurs as globular aggregates up to 1 mm in diameter formed by μm-sized prismatic crystals. The streak is light blue, and lustre is greasy. Calculated density is 2.825 g cm-3. Marioantofilliite is optically biaxial (-), with α=1.613(4), β=1.626(3), and γ=1.633(5) (in 589 nm light). 2Vcalc is 72°. It is distinctly pleochroic, ranging from colourless to pale blue. The empirical chemical formula of marioantofilliite (with rounding errors) is [Cu4.232+Mg0.02Al1.76(OH)12](CO3)0.82(SO4)0.01[Si(OH)6]0.05·3H2O. Unit-cell parameters of marioantofilliite are a=5.590(3), b=2.9358(11), c=7.675(3) Å, β=100.958(17)°, and V=123.66(9) Å3, with space group C2/m and Z=1/3. The crystal structure was refined to R1=0.0372 for 181 unique reflections with F>4σ(F) and 23 refined parameters. It is topologically similar to that of other hydrotalcite-supergroup minerals and shows a distorted {001} brucite-like layer with Cu and Al statistically occupying an octahedrally coordinated M(1) site. The interlayer hosts disordered CO3 and H2O groups. Marioantofilliite formed through the oxidative dissolution of primary Cu ores by mine drainage aqueous solutions and neutralization by gangue carbonates. Its name honours Mario Antofilli (1920-1983) for his contributions to the knowledge of the mineralogy of Liguria.

Citovat

BIAGIONI, Cristian; Jiří SEJKORA; Natale PERCHIAZZI; Enrico MUGNAIOLI; Daniela MAURO; Donato BELMONTE; Radek ŠKODA a Zdeněk DOLNÍČEK. Marioantofilliite, [Cu4Al2(OH)12](CO3) ⋅ 3H2O, a new member of the hydrotalcite supergroup from Liguria (Italy). European Journal of Mineralogy. Copernicus Publications, 2025, roč. 37, č. 5, s. 733-746. ISSN 0935-1221. Dostupné z: https://doi.org/10.5194/ejm-37-733-2025.

@article{2533792,
   author = {Biagioni, Cristian and Sejkora, Jiří and Perchiazzi, Natale and Mugnaioli, Enrico and Mauro, Daniela and Belmonte, Donato and Škoda, Radek and Dolníček, Zdeněk},
   article_number = {5},
   doi = {https://doi.org/10.5194/ejm-37-733-2025},
   keywords = {Italy; Liguria; minerals; layered douhle hydroxides; crystal-structure; bond-valence; cap garonne; copper; Al; mine; spectroscopy},
   language = {eng},
   issn = {0935-1221},
   journal = {European Journal of Mineralogy},
   title = {Marioantofilliite, [Cu4Al2(OH)12](CO3) ⋅ 3H2O, a new member of the hydrotalcite supergroup from Liguria (Italy)},
   url = {https://doi.org/10.5194/ejm-37-733-2025-supplement},
   volume = {37},
   year = {2025}
}

TY  - JOUR
ID  - 2533792
AU  - Biagioni, Cristian - Sejkora, Jiří - Perchiazzi, Natale - Mugnaioli, Enrico - Mauro, Daniela - Belmonte, Donato - Škoda, Radek - Dolníček, Zdeněk
PY  - 2025
TI  - Marioantofilliite, [Cu4Al2(OH)12](CO3) ⋅ 3H2O, a new member of the hydrotalcite supergroup from Liguria (Italy)
JF  - European Journal of Mineralogy
VL  - 37
IS  - 5
SP  - 733-746
EP  - 733-746
PB  - Copernicus Publications
SN  - 09351221
KW  - Italy
KW  - Liguria
KW  - minerals
KW  - layered douhle hydroxides
KW  - crystal-structure
KW  - bond-valence
KW  - cap garonne
KW  - copper
KW  - Al
KW  - mine
KW  - spectroscopy
UR  - https://doi.org/10.5194/ejm-37-733-2025-supplement
N2  - Marioantofilliite (IMA 2025-012), ideally [Cu4Al2(OH)12](CO3)· 3H2O, is a new member of the hydrotalcite supergroup discovered in the Cu-Fe ore deposit of Monte Copello-Reppia, Graveglia Valley, Liguria, Italy. It occurs as globular aggregates up to 1 mm in diameter formed by μm-sized prismatic crystals. The streak is light blue, and lustre is greasy. Calculated density is 2.825 g cm-3. Marioantofilliite is optically biaxial (-), with α=1.613(4), β=1.626(3), and γ=1.633(5) (in 589 nm light). 2Vcalc is 72°. It is distinctly pleochroic, ranging from colourless to pale blue. The empirical chemical formula of marioantofilliite (with rounding errors) is [Cu4.232+Mg0.02Al1.76(OH)12](CO3)0.82(SO4)0.01[Si(OH)6]0.05·3H2O. Unit-cell parameters of marioantofilliite are a=5.590(3), b=2.9358(11), c=7.675(3) Å, β=100.958(17)°, and V=123.66(9) Å3, with space group C2/m and Z=1/3. The crystal structure was refined to R1=0.0372 for 181 unique reflections with F>4σ(F) and 23 refined parameters. It is topologically similar to that of other hydrotalcite-supergroup minerals and shows a distorted {001} brucite-like layer with Cu and Al statistically occupying an octahedrally coordinated M(1) site. The interlayer hosts disordered CO3 and H2O groups. Marioantofilliite formed through the oxidative dissolution of primary Cu ores by mine drainage aqueous solutions and neutralization by gangue carbonates. Its name honours Mario Antofilli (1920-1983) for his contributions to the knowledge of the mineralogy of Liguria.
ER  -

BIAGIONI, Cristian; Jiří SEJKORA; Natale PERCHIAZZI; Enrico MUGNAIOLI; Daniela MAURO; Donato BELMONTE; Radek ŠKODA a Zdeněk DOLNÍČEK. Marioantofilliite, [Cu4Al2(OH)12](CO3) ⋅ 3H2O, a new member of the hydrotalcite supergroup from Liguria (Italy). \textit{European Journal of Mineralogy}. Copernicus Publications, 2025, roč.~37, č.~5, s.~733-746. ISSN~0935-1221. Dostupné z: https://doi.org/10.5194/ejm-37-733-2025.

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