Sanidine
Ackermann S, Kunz M, Armbruster T, Schefer J, Hanni H
Schweizerische Mineralogische und Petrographische Mitteilungen 84 (2004) 345-354
Cation distribution in a Fe-bearing K-feldspar from Itrongay, Madagascar:
A combined neutron- and X-ray single-crystal diffraction study
Note: X-Ray diffraction data, occupancies taken from simultaneous data
Locality: Itrongay, Madagascar
_database_code_amcsd 0020558
8.5832 13.0076 7.1943 90 116.023 90 C2/m
atom      x      y      z  occ  Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
K1M  .21490     .5 .86215 .895  .027  .0155  .0308  .0252      0  .0061      0
Na1M .21490     .5 .86215 .105  .027  .0155  .0308  .0252      0  .0061      0
SiT1 .99056 .18503 .77617  .65 .0107  .0114  .0118  .0092  .0022  .0047  .0011
AlT1 .99056 .18503 .77617  .33 .0107  .0114  .0118  .0092  .0022  .0047  .0011
FeT1 .99056 .18503 .77617  .02 .0107  .0114  .0118  .0092  .0022  .0047  .0011
SiT2 .20946 .38211 .34437  .88 .0107  .0110  .0093  .0107  .0002  .0042 -.0001
AlT2 .20946 .38211 .34437  .12 .0107  .0110  .0093  .0107  .0002  .0042 -.0001
O1    .1376     .5  .2847      .0222  .0203  .0131  .0241      0  .0034      0
O2   .31960 .37380 .59451      .0203  .0211  .0208  .0136  .0020  .0029  .0016
O3        0 .14630      0      .0214  .0254  .0204  .0191      0  .0105      0
O4   .03516 .31119  .2585      .0193  .0171  .0173  .0221 -.0020  .0067 -.0025
O5   .17233 .14676  .7730      .0257  .0219  .0325  .0262  .0037  .0150 -.0007