New minerals and nomenclature modifications approved in 2011

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. 2011-054 Protochabourneite Tl5- x Pb2 x (Sb,As)21– x S34 ( x ~ 1.2–1.5) Sant'Olga tunnel, Monte Arsiccio mine, Stazzema, Apuan Alps, Tuscany, Italy (43°58′N 10°17′E) Paolo Orlandi*, Cristian Biagioni, Elena Bonaccorsi, Yves Moelo and Werner H. Paar *E-mail: orlandi@dst.unipi.it Homeotype of chabourneite Triclinic: P 1I; structure determined a = 8.150(2), b = 8.716(2), c = 21.579(4) A, α = 85.18(1), β = 96.94(1), γ = 88.60(1)° 4.23(51), 3.959(54), 3.928(60), 3.673(63), 3.608(100), 2.824(77), 2.790(61) Type material is deposited in the collections of the Museo di Storia Naturale e del Territorio, Universita di Pisa, Italy, catalogue number 19413 How to cite: Orlandi, P., Biagioni, C., Bonaccorsi, E., Moelo, Y. and Paar, W.H. (2011) Protochabourneite, IMA 2011-054. CNMNC Newsletter No. 11, December 2011, page 2888; Mineralogical Magazine , 75 , 2887–2893. IMA No. …