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kittyzd(½ð±Ò+1):лл 2011-01-14 20:24:08
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
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3Â¥2011-01-14 20:24:26
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cylan

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kittyzd(½ð±Ò+4): ·Ç³£¸Ðл°¡ 2011-01-16 12:31:46
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