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½û³æ (ÖªÃû×÷¼Ò)
- CMEI: 1
- Ó¦Öú: 304 (´óѧÉú)
- ¹ó±ö: 0.054
- ½ð±Ò: 889.1
- Ìû×Ó: 7458
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kittyzd(½ð±Ò+1):лл 2011-01-14 20:24:08
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Name and formula Reference code: 04-0784 Mineral name: Gold, syn PDF index name: Gold Empirical formula: Au Chemical formula: Au Crystallographic parameters Crystal system: Cubic Space group: Fm-3m Space group number: 225 a (Å : 4.0786 b (Å : 4.0786 c (Å : 4.0786 Alpha (¡ã): 90.0000 Beta (¡ã): 90.0000 Gamma (¡ã): 90.0000 Calculated density: 19.30 Measured density: 19.30 Volume of cell: 67.85 Z: 4.00 RIR: - Subfiles and Quality Subfiles: Inorganic Mineral Alloy, metal or intermetalic Common Phase Educational pattern Forensic NBS pattern Quality: Star (S) Comments Color: Yellow metallic General comments: Opaque mineral optical data on specimen from unspecified locality: RR2Re=71.6, Disp.=16, VHN100=53-58, Color values=.384, .391, 72.7, Ref.: IMA Commission on Ore Microscopy QDF. Sample source: Sample purified at NBS, Gaithersburg, Maryland, USA and is about 99.997% Au. Analysis: Spectrographic analysis (%): Si 0.001, Ca 0.001, Ag 0.001(?). Optical data: B=0.366 Melting point: 1061.6-1063.2 Temperature: Pattern taken at 26 C. References Primary reference: Swanson, Tatge., Natl. Bur. Stand. (U.S.), Circ. 539, I, 33, (1953) Optical data: Winchell., Elements of Optical Mineralogy, 17 Peak list No. h k l d [A] I [%] 1 1 1 1 2.35500 100.0 2 2 0 0 2.03900 52.0 3 2 2 0 1.44200 32.0 4 3 1 1 1.23000 36.0 5 2 2 2 1.17740 12.0 6 4 0 0 1.01960 6.0 7 3 3 1 0.93580 23.0 8 4 2 0 0.91200 22.0 9 4 2 2 0.83250 23.0 |
2Â¥2011-01-14 13:59:47
3Â¥2011-01-14 20:24:26
4Â¥2011-01-15 13:20:56














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