Armstrongite
Kashaev A A, Sapozhnikov A N
Kristallografiya 23 (1978) 956-961
Crystal structure of armstrongite
_database_code_amcsd 0014184
14.04 14.16 7.81 90 109.55 90 C2
atom     x    y    z Biso
Ca    .248 .253 .053  1.3
Zr    .258    0 .024  1.3
Si1   .174 .139 .338  1.3
Si2   .202 .368 .345  1.3
Si3   .342 .363 .743  1.3
Si4   .337 .143 .718  1.3
Si5   .002 .005 .299  1.3
Si6   .008 .491 .294  1.3
O1      .5 .476   .5  1.3
O2       0 .492   .5  1.3
O3    .268 .117 .512  1.3
O4    .252 .398 .551  1.3
O5    .212 .102 .176  1.3
O6    .310 .378 .921  1.3
O7    .242 .416 .195  1.3
O8    .282 .110 .862  1.3
O9    .181 .253 .321  1.3
O10   .370 .252 .724  1.3
O11   .061 .103 .325  1.3
O12   .450 .423 .781  1.3
O13   .087 .404 .300  1.3
O14   .443 .091 .735  1.3
O15  -.090 .476 .114  1.3
O16  -.116 .028 .176  1.3
Wat1  .097 .238 .777  1.3
Wat2  .434 .231 .176  1.3