Institute of Experimental Mineralogy
Russian Academy of Sciences
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142432, Chernogolovka, Moscow district
A.V. Chichagov +7(496)52-22320
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*** W W W - X R A Y P O L ***
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SILVER
2, t-copper, f-silver
Ag
Cubic F m3m Z = 4
Fm3m
12 .7 .18
Ref.Str.:
Novgorodova M.I., Gorshkov A.I., Mokhov A.V. (1981)
* International Geology Review, 23, 485-494
L: $Ag0.9969 Au0.0011 Sb0.0024 Bi0.0026$
R: Locality - northeast USSR. Sample DV-260.
ATOMIC. N.A.D.
Initial data from BDM-file
Lattice parameters (cub. angs.,degr.):
a = 4.0862 alpha = 90.0
b = 4.0862 beta = 90.0
c = 4.0862 gamma = 90.0
Unit cell volume (cub. angs.) = 68.23
Molar volume ( cub.cm/mol.) = 10.27
Co-ordinates, thermal parameters, occupation for atomic positions:
NoP x/a y/b z/c B(j) atom / occupation
1 0.0 0.0 0.0 0.0 Ag = 1.0 , Au = 0.0 , Sb = 0.0 , Bi = 0.0
Co-ordinates for all atomic positions :
No NoP x/a y/b z/c
1 1 0.0 0.0 0.0
2 1 0.5 0.0 0.5
3 1 0.5 0.5 0.0
4 1 0.0 0.5 0.5
X-ray density (g/cm cub.) = 10.57
MU (1/cm) = 2306.199 Mass attenuation coefficient (cm**2/g) = 218.23
Selected interatomic distances (cation-anion,anion-anion):
NoP Atom Rad.sph. C.N. Distance NoP N.
(angs.) (angs.)
1 Ag ,Au ,Sb ,Bi 5.112 42
4.0862 1
4.0862 1
4.0862 1
4.0862 1
4.0862 1
4.0862 1
5.0046 1
5.0046 1
2.8894 1
2.8894 1
5.0046 1
5.0046 1
5.0046 1
5.0046 1
2.8894 1
2.8894 1
5.0046 1
5.0046 1
5.0046 1
2.8894 1
5.0046 1
5.0046 1
2.8894 1
5.0046 1
5.0046 1
2.8894 1
5.0046 1
5.0046 1
2.8894 1
5.0046 1
5.0046 1
5.0046 1
5.0046 1
5.0046 1
2.8894 1
2.8894 1
2.8894 1
2.8894 1
5.0046 1
5.0046 1
5.0046 1
5.0046 1
X-ray diffraction powder data (II), X-Ray W.L. = 1.54056(angs.):
No H K L Theta 2*Theta S LPG MF F I int.
( degree ) *100
1 1 1 1 19.057 38.114 0.212 16.07 8 150.6 62631.9
2 2 0 0 22.149 44.298 0.245 11.49 6 142.8 30198.4
3 2 2 0 32.221 64.441 0.346 4.93 12 121.2 18665.0
4 1 1 3 38.698 77.395 0.406 3.43 24 110.7 21678.8
5 2 2 2 40.769 81.538 0.424 3.16 8 107.8 6319.8
X-ray diffraction powder data (I)...X-Ray wave length = 1.54056 (angs.):
No H K L Theta 2*Theta d I int I int.n. I p.h.n. H(Si)
( degree ) (angstrem) *100 *100
1 1 1 1 19.057 38.114 2.35917 62631.9 100.0 100.0 5.7
2 2 0 0 22.149 44.298 2.0431 30198.4 48.2 47.9 5.7
3 2 2 0 32.221 64.441 1.44469 18665.0 29.8 28.8 5.9
4 1 1 3 38.698 77.395 1.23204 21678.8 34.6 32.7 6.0
5 2 2 2 40.769 81.538 1.17958 6319.8 10.1 9.4 6.1
Reference:
Chichagov A.V. et al.
Information-Calculating System on Crystal Structure Data of Minerals
(MINCRYST)
- Kristallographiya, v.35, n.3, 1990, p.610-616 (in Russian)
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