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Strontiohurlbutite, SrBe2(PO4)(2), a new mineral from Nanping No. 31 pegmatite, Fujian Province, Southeastern China (Articolo in rivista)
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- Strontiohurlbutite, SrBe2(PO4)(2), a new mineral from Nanping No. 31 pegmatite, Fujian Province, Southeastern China (Articolo in rivista) (literal)
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- 2014-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.2138/am.2014.4547 (literal)
- Alternative label
Rao C.[1,2], Wang R.[1], Hatert F.[3], Gu X.[4], Ottolini L.[5], Hu H.[1], Dong C.[2], Dal Bo F.[3], Baijot M.[3] (2014)
Strontiohurlbutite, SrBe2(PO4)(2), a new mineral from Nanping No. 31 pegmatite, Fujian Province, Southeastern China
in The American mineralogist
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Rao C.[1,2], Wang R.[1], Hatert F.[3], Gu X.[4], Ottolini L.[5], Hu H.[1], Dong C.[2], Dal Bo F.[3], Baijot M.[3] (literal)
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- [1] State Key Laboratory for Mineral Deposits Research, School of Earth Sciences and Engineering, Nanjing University, Nanjing 210093, P.R. China
[2] Department of Earth Sciences, Zhejiang University, Hangzhou 310027, P.R. China
[3] Laboratoire de Minéralogie, B18, Université de Liège, B-4000 Liège, Belgium
[4] School of Earth Sciences and Info-physics, Central South University, Changsha, Hunan 410083, P.R. China
[5] C.N.R.-Istituto di Geoscienze e Georisorse (IGG), Unità di Pavia,Via A. Ferrata 1, I-27100 Pavia, Italy (literal)
- Titolo
- Strontiohurlbutite, SrBe2(PO4)(2), a new mineral from Nanping No. 31 pegmatite, Fujian Province, Southeastern China (literal)
- Abstract
- Strontiohurlbutite, ideally SrBe2(PO4)(2), is a new member of hurlbutite group discovered in the Nanping No. 31 pegmatite, Fujian province, southeastern China. Crystals are mainly found in zones I, II, and IV; they are platy, subhedral-to-anhedral, with a length from 5 mu m to 1.5 mm Associated minerals mainly include quartz, muscovite, beryl, hurlbutite, hydroxylherderite, apatite-group minerals, and phenakite. Strontiohurlbutite crystals are light blue, translucent-to-transparent, and have vitreous luster. The Mohs hardness is about 6, and the tenacity is brittle. Optically, strontiohurlbutite is biaxial (-), alpha = 1.563(3), beta = 1.569(2), gamma = 1.572(3) (white light), 2 V-meas = 68.5(5)degrees, and exhibits weak dispersion, r>v. The optical orientation is X = b, Y approximate to c. Electron-microprobe and SIMS analyses (average of 16) give SrO 29.30, P2O5 51.05, CaO 0.91, BaO 0.64, and BeO 17.71 wt%; total 99.61 wt%. The empirical formula, based on 8 O apfu, is (Sr0.81Ca0.05Ba0.01)(Sigma 0.87)Be2.02P2.05O8. The stronger eight lines of the measured X-ray powder-diffraction pattern [d in angstrom(I)(hkl)] are: 3.554(100)(121); 3.355(51)(211); 3.073(38)(022); 2.542(67)(113); 2.230(42)(213); 2.215(87)(32 (1) over bar); 2.046(54)(223); 1.714(32)(143). Strontiohurlbutite is monoclinic, space group P2(1)/c; unit-cell parameters refined from single-crystal X-ray diffraction data are: a = 7.997(3), b = 8.979(2), c = 8.420(7) angstrom, beta = 90.18(6)degrees, V = 604.7(1) angstrom(3) (Z = 4, calculated density = 3.101 g/cm(3)). The mineral is isostructural with hurlbutite, CaBe2(PO4)(2), and with paracelsian, BaAl2Si2O8. The formation of strontiohurlbutite is related to the hydrothermal alteration of primary beryl by late Sr- and P-rich fluids. (literal)
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