Pargasite
Tait K T, Hawthorne F C, Della Ventura G
The Canadian Mineralogist 39 (2001) 1725-1732
Al-Mg disorder in a gem-quality pargasite from Baffin Island, Nunavut, Canada
Locality: Baffin Island, Nunavut, Canada
_database_code_amcsd 0005759
9.8814 17.967 5.2927 90 105.263 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)
O(1)    .1066  .0873 .2167     .0111  .0083  .0162  .0090 -.0019  .0026  -.0010
O(2)    .1192  .1724 .7319     .0094  .0056  .0118  .0101  .0000  .0008   .0009
O(3)    .1068      0 .7159     .0077  .0057  .0081  .0089      0  .0011       0
O(4)    .3663    1/4 .7903     .0114  .0123  .0099  .0129 -.0019  .0050  -.0002
O(5)    .3505  .1393 .1104     .0125  .0086  .0168  .0108 -.0005  .0004   .0045
O(6)    .3447  .1169 .6098     .0127  .0091  .0150  .0135  .0001  .0021  -.0046
O(7)    .3418      0 .2823     .0149  .0127  .0120  .0191      0  .0026       0
Si(1)  .27988 .08548 .3030 .81 .0087  .0086  .0087  .0084 -.0009  .0016  -.0001
Al(1)  .27988 .08548 .3030 .19 .0087  .0086  .0087  .0084 -.0009  .0016  -.0001
Si(2)  .29017 .17327 .8125     .0072  .0071  .0076  .0069 -.0002  .0021  -.0004
Mg(1)       0 .08891   1/2 .97 .0082  .0085  .0097  .0064      0  .0023       0
Ti(1)       0 .08891   1/2 .03 .0082  .0085  .0097  .0064      0  .0023       0
Mg(2)       0 .17617     0 .70 .0051  .0057  .0050  .0048      0  .0018       0
Al(2)       0 .17617     0 .27 .0051  .0057  .0050  .0048      0  .0018       0
Fe(2)       0 .17617     0 .03 .0051  .0057  .0050  .0048      0  .0018       0
Mg(3)       0      0     0 .81 .0065  .0071  .0064  .0053      0  .0004       0
Al(3)       0      0     0 .17 .0065  .0071  .0064  .0053      0  .0004       0
Fe(3)       0      0     0 .02 .0065  .0071  .0064  .0053      0  .0004       0
Ca(4)       0 .27942   1/2 .91 .0101  .0117  .0095  .0107      0  .0057       0
Na(4)       0 .27942   1/2 .09 .0101  .0117  .0095  .0107      0  .0057       0
NaA(2)      0   .471     0 .62 .0200
KA(m)    .045    1/2  .095 .24 .0200
NaA(m)   .045    1/2  .095 .11 .0200
H(1)     .200      0  .832       .02