Abstract
The information given here is provided by the IMA Commission on New Minerals, Nomenclature and Classification for comparative purposes and as a service to mineralogists working on new species. Each mineral is described in the following format: Mineral name, if the authors agree on its release prior to the full description appearing in press Chemical formula Type locality Full authorship of proposal E-mail address of corresponding author Relationship to other minerals Crystal system, Space group; Structure determined, yes or no Unit-cell parameters Strongest lines in the X-ray powder diffraction pattern Type specimen repository and specimen number Citation details for the mineral prior to publication of full description Citation details concern the fact that this information will be published in the Mineralogical Magazine on a routine basis, as well as being added month by month to the Commission's web site. It is still a requirement for the authors to publish a full description of the new mineral. NO OTHER INFORMATION WILL BE RELEASED BY THE COMMISSION IMA No. 2013-059 Grandaite Sr2Al(AsO4)2(OH) La Valletta mine, Vallone della Valletta, Piedmont, Italy (44°23′542′ N 7°542′ E) Fernando Camara*, Marco E. Ciriotti, Erica Bittarello, Fabrizio Nestola, Fabio Bellatreccia, Federico Massimi, Francesco Radica, Emanuele Costa, Piera Benna and Gian Carlo Piccoli *E-mail: fernando.camaraartigas@unito.it Brackebuschite supergroup Monoclinic: P 21/ m ; structure determined a = 7.5764(5), b = 5.9507(4), c = 8.8050(6) A, β = 112.551(2)° 3.194(100), 2.981(51), 2.922(40), 2.743(31), 2.705(65), 2.087(52), 1.685(25), 1.663(13) Type material is deposited in the collections of the Museo Regionale di Scienze Naturali di Torino, Sezione di Mineralogia, Petrografia e Geologia, Torino, Italy, catalogue number M/15999, and Museo Civico Archeologico e di Scienze Naturali “Federico Eusebio”, Alba, Cuneo, Italy, catalogue number G. 1723 prog. 505 How to cite: Camara, F., Ciriotti, M.E., Bittarello, E., …
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