Foitite
MacDonald D J, Hawthorne F C, Grice J D
American Mineralogist 78 (1993) 1299-1303
Foitite, _[Fe2(Al,Fe)]Al6Si6O18(BO3)3(OH)4, a new alkali-deficient
tourmaline: Description and crystal structure
Locality: likely White Queen mine, San Diego County, California, USA
_database_code_amcsd 0001622
15.967 15.967 7.126 90 90 120 R3m
atom      x      y       z  occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
NaX       0      0  .84080  .25  .0282  .0282  .0237  .0141      0      0
AlY  .06223 .93777   .4485 .333  .0060  .0060  .0122  .0021  .0005 -.0005
FeY  .06223 .93777   .4485 .497  .0060  .0060  .0122  .0021  .0005 -.0005
MnY  .06223 .93777   .4485 .080  .0060  .0060  .0122  .0021  .0005 -.0005
MgY  .06223 .93777   .4485 .017  .0060  .0060  .0122  .0021  .0005 -.0005
LiY  .06223 .93777   .4485 .073  .0060  .0060  .0122  .0021  .0005 -.0005
AlZ  .26151 .29827   .4623 .982  .0069  .0061  .0056  .0033 -.0005 -.0003
FeZ  .26151 .29827   .4623 .018  .0069  .0061  .0056  .0033 -.0005 -.0003
SiT  .18988 .19193   .0730       .0046  .0047  .0056  .0021  .0003  .0002
B    .88981 .11019   .6177       .0088  .0088  .0073  .0038 -.0002  .0002
OH1       0      0   .2931       .0432  .0432  .0075  .0216      0      0
O2   .93776 .06224   .5853       .0303  .0303  .0121  .0253  .0001 -.0001
OH3  .13427 .86573   .5649       .0104  .0104  .0058  .0002  .0007 -.0007
O4   .90631 .09369   .0058       .0076  .0076  .0085  .0008 -.0005  .0005
O5   .09452 .90548  -.0179       .0074  .0074  .0079 -.0002 -.0009  .0009
O6   .18786 .19831   .2977       .0085  .0076  .0050  .0024  .0006 -.0003
O7   .28601 .28512  -.0066       .0056  .0064  .0078  .0014  .0017  .0004
O8   .27138 .21049   .6319       .0117  .0073  .0093  .0058 -.0030 -.0008