Ashburtonite
Grice J D, Nickel E H, Gault R A
American Mineralogist 76 (1991) 1701-1707
Ashburtonite, a new bicarbonate-silicate mineral from Ashburton Downs, Western
Australia: Description and structure determination
14.234 14.234 6.103 90 90 90 I4/m
atom      x      y     z U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Si    .1167  .1064    .5  .0086  .0058  .0086 -.0008      0      0
Cu      .25    .25   .25  .0148  .0104  .0112 -.0074  .0022 -.0014
Pb   .21321 .03767     0  .0168   .008  .0151 -.0001      0      0
C      .438   .859     0   .021   .068   .049   -.01      0      0
O1    .1637  .1455 .7245   .008   .009   .016  -.006  -.004   .004
O2    .3027  .1805     0   .004   .013   .013  -.001      0      0
O3    .0062  .1305    .5   .003   .029   .026  -.001      0      0
O4    .3505  .8641     0   .062   .062   .067  -.011      0      0
O5    .4839  .8556 .1782   .057   .081   .102  -.005  -.018   .023
Cl        0      0     0   .016   .016   .022      0      0      0