 | Cámara, Fernando, Bittarello, Erica, Ciriotti, Marco E., Nestola, Fabrizio, Radica, Francesco, Marchesini, Marco (2015) As-bearing new mineral species from Valletta mine, Maira Valley, Piedmont, Italy: II. Braccoite, NaMn2+5 [Si5AsO17(OH)](OH), description and crystal structure. Mineralogical Magazine, 79 (1) 171-189 doi:10.1180/minmag.2015.079.1.14 | Journal (article/letter/editorial) | | As-bearing new mineral species from Valletta mine, Maira Valley, Piedmont, Italy: II. Braccoite, NaMn2+ 5 [Si5AsO17(OH)](OH)...MARCHESINI 1 2 3 4 5 6 Dipartimento di Scienze della Terra, Università degli Studi di Torino, via Tommaso...Tommaso Valperga Caluso 35, I-10125 Turin, Italy CrisDi, Interdepartmental Center for Crystallography...Crystallography, via Pietro Giuria 7, I-10125, Turin, Italy Associazione Micromineralogica Italiana, via San Pietro...Pietro 55, I-10073 Devesi-Cirié, Turin, Italy Dipartimento di Geoscienze, Università degli Studi di Padova |  | | Book | | (right). The pictures are drawn using data from Della Ventura et al. (2007b) and Charoy et al. (1996)...stoppaniite, ideally Fe3+3MgNa(Be6Si12O36)·2H2O (Della Ventura et al. 2007b), H2O is present as a speciesdefining...is observed in the range from 3694 to 3730 cm−1 (Della Ventura et al. 1992, 1998; Gottschalk and Andrut...1973; Raudsepp et al. 1987b; Welch et al. 1994; Della Ventura et al. 1998b, 1999a). The minor A* band...MgMgMg– OH–□ configuration (Raudsepp et al. 1987b; Della Ventura et al. 1999a), suggests that nominal end-member |
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