Lisiguangite, CuPtBiS3, a New Platinum-Group Mineral from the Yanshan Mountains, Hebei, China

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	Lisiguangite, CuPtBiS3, a New Platinum-Group Mineral from the Yanshan Mountains, Hebei, China
	Yu, ZX (Yu Zuxiang); Cheng, FY (Cheng Fanyun); Ma, HW (Ma Hongwei)
刊名	ACTA GEOLOGICA SINICA-ENGLISH EDITION
	2009
卷号	83 期号:2 页码:238-244
关键词	lisiguangite CuPtBiS3 new mineral species Yanshan Mountains Chengde China
ISSN号	1000-9515
英文摘要	Lisiguangite, CuPtBiS3, is a new mineral species discovered in a PEG-bearing, Co-Cu sulfide vein in garnet pyroxenite of the Yanshan Mountains, Chengde Prefecture, Hebei Province, China. It is associated with chalcopyrite and bornite, galena, minor pyrite, carrolite, molybdenite and the platinum-group minerals daomanite (CuPtAsS2), Co-bearing malanite (Cu(Pt, Co)(2)S-4) sperrylite, moncheite, cooperite and malyshevite (CuPdBiS3), rare damiaoite (Pt2In3) and yixunite (Pt3In). Lisiguangite occurs as idiomorphic crystals, tabular or lamellae (010) and elongated [100] or as aggregates, up to 2 mm long and 0.5 mm wide. The mineral is opaque, has lead-gray color, black streak and metallic luster. The mineral is non-fluorescent The observed morphology displays the following forms pinacoids {100}, {010}, {001}, and prism {110}. No twining is observed. The a b:c ratio, calculated from unit-cell parameters, is 0.6010 1:0.3836. Cleavage: {010} perfect, {001} distinct, {100} may be visible. H Mohs 21/2 VHN25 = 46.7-49.8 (mean 48.3) kg/mm(2). Tenacity brittle. Lisiguangite is bright white with a yellowish tint In reflected light it shows neither internal reflections nor bireflectance or pleochroism. It has weak to moderate anisotropy (blue-greenish to brownish) and parallel-axial extinction. The reflectance values in air (and in oil) for R-3, R-4 and (R-im(3), R-im(4)), at the standard Commission on Ore Mineralogy wavelengths are 37.5, 35.7 (23.4, 22.3) at 470 nm; 38.6, 36.5 (23.6, 22.6) at 546 nm; 39.4, 37.5 (23.6, 22.7) at 589 nm and 40.3, 38.2 (23.7, 22.9) at 650 nm. The average of eight electron-microprobe analyses Cu 12.98, Pt 30.04, Pd 2.69, Bi 37.65 and S 17.55, totaling 100.91%, corresponding to Cu-1.10(Pt-0.83, Pd-0.14)(Sigma 0.97)Bi0.97S2.96 based on six atoms apfu. The ideal formula is CuPtBiS3. The mineral is orthorhombic. Space group P2(1)2(1)2(1), a = 7.7152(15)angstrom, b = 12.838(3) angstrom, c = 4.9248(10)angstrom, V = 487.80(17)angstrom(3), Z = 4. The six strongest lines in the X-ray powder-diffraction pattern [d in angstrom (I) (h k l) are 6.40(30)(020), 3.24(80)(031), 3.03(100)(201), 2.27(40)(051), 2.14(50)(250), 1.865(60)(232).
学科主题	结晶学与矿物学
WOS研究方向	Geology
语种	英语
出版者	WILEY-BLACKWELL
WOS记录号	WOS:000265250900007
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/39034]
专题	中国地质调查局
作者单位	Chinese Acad Sci, Inst Chem, Beijing 100082, Peoples R China
推荐引用方式 GB/T 7714	Yu, ZX ,Cheng, FY ,Ma, HW . Lisiguangite, CuPtBiS3, a New Platinum-Group Mineral from the Yanshan Mountains, Hebei, China[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2009,83(2):238-244.
APA	Yu, ZX ,Cheng, FY ,&Ma, HW .(2009).Lisiguangite, CuPtBiS3, a New Platinum-Group Mineral from the Yanshan Mountains, Hebei, China.ACTA GEOLOGICA SINICA-ENGLISH EDITION,83(2),238-244.
MLA	Yu, ZX ,et al."Lisiguangite, CuPtBiS3, a New Platinum-Group Mineral from the Yanshan Mountains, Hebei, China".ACTA GEOLOGICA SINICA-ENGLISH EDITION 83.2(2009):238-244.