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CC=Collection Code: [AB2X4]=ANX Form: [cF56]=Pearson: [e d a]=Wyckoff Symbol: [Al2MgO4]=Structure Type:
***Click the ANX, Pearson or Wyckoff Symbol to find structures with that symbol***.
CC=34787 Help
TitleThe crystal structures of nine K feldspars from the Adamello Massif (Northern Italy).
Authorsdal Negro, A.;de Pieri, R.;Quareni, S.
ReferenceActa Crystallographica B (1978) 34, 2699-2707
Link XRef SCOPUS SCIRUS Google
Also: Acta Crystallographica B (1980) 36, 3211-3211
Link XRef SCOPUS SCIRUS Google
CompoundAl0.99 K0.94 Na0.06 O8 Si3.01 - [Microcline] Potassium sodium tecto-alumosilicate * [AB16C17D50X133] [aP26] [i14] []
Cell8.560(2), 12.984(7), 7.209(2), 90.28, 116.03, 89.03
C1- (2) V=719.85
RemarksR=0.038000 : MIN =Microcline : PDF =19-932 : DEF
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.
PDF 19-932, sample CA1B, mean T-O: 1.664, 1.643, 1.620, 1.619

Atom (site) Oxid. x, y, z, B, Occupancy
K1(4i)1
Na1(4i)1
Al1(4i)3
Si1(4i)4
Al2(4i)3
Si2(4i)4
Al3(4i)3
Si3(4i)4
Al4(4i)3
Si4(4i)4
O1(4i)-2
O2(4i)-2
O3(4i)-2
O4(4i)-2
O5(4i)-2
O6(4i)-2
O7(4i)-2
O8(4i)-2
0.2837(1)0.9967(1)0.1375(1)00.94
0.2837(1)0.9967(1)0.1357(1)00.06
0.0099(1)0.1858(1)0.2214(1)00.63
0.0099(1)0.1858(1)0.2214(1)00.37
0.0094(1)0.8173(1)0.2277(1)00.24
0.0094(1)0.8173(1)0.2277(1)00.76
0.7094(1)0.1189(1)0.3425(1)00.065
0.7094(1)0.1189(1)0.3425(1)00.935
0.7070(1)0.8836(1)0.3470(1)00.055
0.7070(1)0.8836(1)0.3470(1)00.945
0.0003(3)0.1448(2)0.9926(4)01
0.6356(3)0.0024(2)0.2853(3)01
0.8239(3)0.1465(2)0.2238(4)01
0.8281(3)0.8555(2)0.2329(4)01
0.0345(3)0.3150(2)0.2562(3)01
0.0358(3)0.6916(2)0.2636(4)01
0.1857(3)0.1248(2)0.4062(3)01
0.1794(3)0.8741(2)0.4090(3)01
Atom (site) Oxid. Beta11, Beta22, Beta33, Beta12, Beta13, Beta23
K1(4i)1
Na1(4i)1
Al1(4i)3
Si1(4i)4
Al2(4i)3
Si2(4i)4
Al3(4i)3
Si3(4i)4
Al4(4i)3
Si4(4i)4
O1(4i)-2
O2(4i)-2
O3(4i)-2
O4(4i)-2
O5(4i)-2
O6(4i)-2
O7(4i)-2
O8(4i)-2
0.0067(1)0.00388(5)0.0134(2)-.00005(6)0.0030(1)-.00021(7)
0.0067(1)0.00368(5)0.0134(2)-.00005(6)0.0030(1)-.00021(7)
0.0049(1)0.00131(4)0.0044(2)-.00064(6)0.0022(1)-.00052(6)
0.0049(1)0.00131(4)0.0044(2)-.00064(6)0.0022(1)-.00052(6)
0.0047(1)0.00130(4)0.0046(2)0.00026(5)0.0023(1)0.00016(6)
0.0047(1)0.00130(4)0.0046(2)0.00026(5)0.0023(1)0.00016(6)
0.0047(1)0.00108(4)0.0052(2)-.00020(5)0.0023(1)-.00009(6)
0.0047(1)0.00108(4)0.0052(2)-.00020(5)0.0023(1)-.00009(6)
0.0046(1)0.00097(4)0.0052(2)-.00020(5)0.0021(1)-.00012(6)
0.0046(1)0.00097(4)0.0052(2)-.00020(5)0.0021(1)-.00012(6)
0.0083(4)0.0022(1)0.0094(5)0.0000(2)0.0042(4)0.0000(2)
0.0083(4)0.0012(1)0.0089(5)-.0001(2)0.0016(3)0.0000(2)
0.0078(4)0.0033(1)0.0114(5)-.0010(2)0.0053(4)0.0002(2)
0.0076(4)0.0034(1)0.0121(5)0.0004(2)0.0062(4)-.0003(2)
0.0062(3)0.0021(1)0.0091(5)-.0011(2)0.0027(3)-.0010(2)
0.0060(3)0.0019(1)0.0107(5)0.0002(2)0.0032(3)0.0005(2)
0.0082(4)0.0019(1)0.0070(5)0.0000(2)0.0021(3)0.0002(2)
0.0071(4)0.0020(1)0.0056(5)-.0007(2)0.0011(3)-.0005(2)

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