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CC=Collection Code: [AB2X4]=ANX Form: [cF56]=Pearson: [e d a]=Wyckoff Symbol: [Al2MgO4]=Structure Type:
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CC=39449	Help
Title	Crystal structure of a new natural Na,K,Fe-silicate.
Authors	Rastsvetaeva, R.K.;Rekhlova, O.Yu.;Khomyakov, A.P.
Reference	Kristallografiya (1991) 36, 892-897 Link XRef SCOPUS Google
Compound	H14 Fe0.9 K3 Mg0.1 Mn0.7 Na4 O29 Si8 Ti0.4 - [Ershovite] Sodium potassium iron manganese titanium magnesium silicate hydrate * [] [aP60] [i23 h] []
Cell	10.244(2), 11.924(3), 5.276(3), 103.491(2), 96.960(3), 91.945(3) P1- (2) V=620.77
Remarks	R=0.041000 : D M =Ershovite : P =46-1424 : A site occupation is implausible or meaningless but agrees with the paper. The coordinates are those given in the paper but the atomic distances do not agree with those calculated during testing.The coordinates are probably correct. Calculated density unusual but tolerable.

Atom (site) Oxid.

x, y, z, B, Occupancy

Si1	(2i)	4
Si2	(2i)	4
Si3	(2i)	4
Si4	(2i)	4
Na1	(2i)	1
Na2	(2i)	1
K1	(2i)	1
K2	(1h)	1
Fe1	(2i)	2
Mn1	(2i)	2
Ti1	(2i)	4
Mg1	(2i)	2
O1	(2i)	-2
O2	(2i)	-2
O3	(2i)	-2
O4	(2i)	-2
O5	(2i)	-2
O6	(2i)	-2
O7	(2i)	-2
O8	(2i)	-2
O9	(2i)	-2
O10	(2i)	-2
O11	(2i)	-2
O12	(2i)	-2
O13	(2i)	-2
O14	(2i)	-2
H1	(2i)	1
H2	(2i)	1
H3	(2i)	1
H4	(2i)	1
H5	(2i)	1
H6	(2i)	1
H7	(2i)	1
O15	(2i)	-2

0.73	0.27	0.42	1.16	1
0.71	0.67	0.13	1.16	1
0.73	0.41	0.98	1.12	1
0.68	0.80	0.69	1.22	1
0.97	0.86	0.46	1.86	1
0.99	0.73	0.88	2.30	1
0.55	0.13	0.82	1.91	1
0.5	0.5	0.5	3.04	1
0.00	0.42	0.70	1.48	0.45
0.00	0.42	0.70	1.48	0.35
0.00	0.42	0.70	1.48	0.2
0.00	0.42	0.70	1.48	0.05
0.67	0.35	0.68	1.5(	1
0.89	0.28	0.47	1.5(	1
0.64	0.72	0.88	1.7(	1
0.87	0.68	0.17	1.6(	1
0.89	0.43	0.01	1.5(	1
0.82	0.86	0.77	1.8(	1
0.66	0.53	0.05	1.6(	1
0.64	0.73	0.39	1.6(	1
0.68	0.33	0.17	1.4(	1
0.67	0.14	0.35	1.7(	1
0.57	0.90	0.72	1.7(	1
0.89	0.54	0.57	2.1(	1
0.86	0.99	0.26	2.7(	1
0.85	0.11	0.81	2.8(	1
0.86	0.94	0.14	1.2(	1
0.50	0.87	0.68	2.9(	1
0.81	0.04	0.26	2.6(	1
0.85	0.03	0.80	3.4(	1
0.81	0.12	0.66	2.2(	1
0.83	0.55	0.52	4.3(	1
			0	1.
			0	0.5

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