Davyne
Hassan I, Grundy H D
The Canadian Mineralogist 28 (1990) 341-349
Structure of davyne and implications for stacking faults
Sample BM1907,210
_database_code_amcsd 0005240
12.854 12.854 5.357 90 90 120 P6_3
atom    x    y    z occ Uiso
O1   .212 .424 .724     .019
O2   .112 .554 .746     .025
O3   .009 .340 .010     .007
O4   .328 .346 .025     .039
AlT1 .338 .413 .751 .63 .010
SiT1 .338 .413 .751 .37 .010
SiT2 .077 .414  .75 .60 .011
AlT2 .077 .414  .75 .40 .011
Cl    2/3  1/3 .711     .091
Ca    2/3  1/3 .218     .009
Na   .153 .308 .258 .55 .038
K    .118 .228 .264 .28 .049