Graulichite-(La), LaFe<sup>3+</sup><sub>3</sub>(AsO<sub>4</sub>)<sub>2</sub>(OH)<sub>6</sub>, a new addition to the alunite supergroup from the Patte d'Oie mine, Bou Skour mining district, Morocco
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Published:2022-06-27
Issue:3
Volume:34
Page:365-374
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ISSN:1617-4011
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Container-title:European Journal of Mineralogy
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language:en
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Short-container-title:Eur. J. Mineral.
Author:
Biagioni Cristian, Ciriotti Marco E., Favreau Georges, Mauro DanielaORCID, Zaccarini Federica
Abstract
Abstract. The new mineral species graulichite-(La), ideally
LaFe33+(AsO4)2(OH)6, has been discovered in the
Patte d'Oie mine, Bou Skour mining district, Morocco. It occurs as yellow
rhombohedral crystals, up to 0.1 mm in size, with a resinous luster,
associated with malachite, agardite-(La), conichalcite, and a still
undetermined REE carbonate. Crystals are chemically zoned and two
homogeneous domains were identified, corresponding to the empirical chemical
formulae (calculated on the basis of 6 cations per formula unit, assuming
the occurrence of 14 O atoms)
(La0.34Ce0.20Ca0.11Sr0.07Pb0.05K0.04)Σ0.81(Fe2.163+Al0.84Cu0.20)Σ3.20(As1.23P0.39S0.37)Σ1.99O14H6.13
(domain #1) and
(La0.38Ce0.22Sr0.10Ca0.09Pb0.05K0.06)Σ0.90(Fe2.603+Al0.49Cu0.20)Σ3.29(As0.91P0.50S0.40)Σ1.81O14H6.53
(domain #2). Single-crystal unit-cell parameters are a=7.252(13), c=16.77(3) Å, V=764(3) Å3, space group R-3m. The eight strongest
reflections in the observed X-ray powder diffraction pattern are (d in Å,
visually estimated intensity): 5.86, medium; 3.045, strong; 2.511,
medium-weak; 2.239, medium; 1.960, medium-weak; 1.813, medium-weak; 1.689,
medium-weak; 1.478, medium. Graulichite-(La) belongs to the dussertite group
within the alunite supergroup. It is the La analogue of graulichite-(Ce) and
the Fe3+ analogue of arsenoflorencite-(La).
Funder
Ministero dell’Istruzione, dell’Università e della Ricerca
Publisher
Copernicus GmbH
Subject
Pulmonary and Respiratory Medicine,Pediatrics, Perinatology and Child Health
Reference39 articles.
1. Bayliss, P. and Levinson, A. A.: A system of nomenclature for rare-earth
mineral species: Revision and extension, Am. Mineral., 73, 422–423, 1988. 2. Bayliss, P., Kolitsch, U., Nickel, E. H., and Pring, A.: Alunite supergroup:
recommended nomenclature, Mineral. Mag., 74, 919–927, 2010. 3. Biagioni, C., Mauro, D., Pasero, M., Bonaccorsi, E., Lepore, G. O.,
Zaccarini, F., and Skogby, H.: Crystal-chemistry of sulfates from the Apuan
Alps (Tuscany, Italy). VI. Tl-bearing alum-(K) and voltaite from the
Fornovolasco mining complex, Am. Mineral., 105, 1088–1098, 2020. 4. Burton, E. D., Karimian, N., Johnston, S. G., Schoepfer, V. A., Choppala, G.,
and Lamb, D.: Arsenic-imposed effects on schwertmannite and jarosite
formation in Acid Mine Drainage and coupled impacts on arsenic mobility, ACS
Earth Space Chem., 5, 1418–1435, 2021. 5. Bruker AXS Inc.: APEX 3. Bruker Advanced X-ray Solutions, Madison,
Wisconsin, USA, 2016.
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