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
3, 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: $Ag0.9855 Cu0.0046 Fe0.0001 Cr0.0001 Ni0.0001$
R: Locality - northeast USSR. Sample DV-3060.
ATOMIC. N.A.D.
Initial data from BDM-file
Lattice parameters (cub. angs.,degr.):
a = 4.084 alpha = 90.0
b = 4.084 beta = 90.0
c = 4.084 gamma = 90.0
Unit cell volume (cub. angs.) = 68.12
Molar volume ( cub.cm/mol.) = 10.26
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 = 0.99, Cu = 0.0 , Fe = 0.0 , Cr = 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.) = 10.39
MU (1/cm) = 2260.976 Mass attenuation coefficient (cm**2/g) = 217.559
Selected interatomic distances (cation-anion,anion-anion):
NoP Atom Rad.sph. C.N. Distance NoP N.
(angs.) (angs.)
1 Ag ,Cu ,Fe ,Cr 3.456 12
2.8878 1
2.8878 1
2.8878 1
2.8878 1
2.8878 1
2.8878 1
2.8878 1
2.8878 1
2.8878 1
2.8878 1
2.8878 1
2.8878 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 19.067 38.135 0.212 16.05 8 148.0 60598.7
2 2 0 0 22.161 44.323 0.245 11.47 6 140.3 29213.1
3 2 2 0 32.24 64.48 0.346 4.93 12 119.0 18047.3
4 1 1 3 38.722 77.445 0.406 3.43 24 108.7 20961.1
5 2 2 2 40.796 81.591 0.424 3.16 8 105.9 6111.0
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 19.067 38.135 2.3579 60598.7 100.0 100.0 5.7
2 2 0 0 22.161 44.323 2.042 29213.1 48.2 47.9 5.7
3 2 2 0 32.24 64.48 1.44391 18047.3 29.8 28.8 5.9
4 1 1 3 38.722 77.445 1.23137 20961.1 34.6 32.7 6.0
5 2 2 2 40.796 81.591 1.17895 6111.0 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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