Holmquistite
Camara F, Oberti R
American Mineralogist 90 (2005) 1167-1176
The crystal-chemistry of holmquistites: Ferroholmquistite from
Greenbushes (Western Australia) and
hints for compositional constraints in B-Li amphiboles
Sample: Rwanda
_database_code_amcsd 0003815
18.2754 17.6569 5.2738 90 90 90 Pnma
atom      x      y      z   occ  Uiso
Mg1   .1252  .1590  .3948   .68  .007
Fe1   .1252  .1590  .3948   .30  .007
Mn1   .1252  .1590  .3948   .02  .007
Al2   .1253  .0685 -.1038   .88  .005
Fe2   .1253  .0685 -.1038   .10  .005
Mg2   .1253  .0685 -.1038   .01  .005
Fe2   .1253  .0685 -.1038  .005  .005
Zn2   .1253  .0685 -.1038  .005  .005
Mg3   .1254    .25 -.1051   .62  .006
Fe3   .1254    .25 -.1051   .38  .006
Li4   .1225 -.0063  .3960  .985  .021
Na4   .1225 -.0063  .3960  .005  .021
Mg4   .1225 -.0063  .3960  .005  .021
Fe4   .1225 -.0063  .3960  .005  .021
NaA    .375    .25     .5   .01
Si1A  .2695  .1622  .0677        .004
Si1B -.0188  .1626  .7238        .004
Si2A  .2736  .0762  .5734        .004
Si2B -.0243  .0773  .2153        .005
O1A   .1806  .1566  .0496        .007
O1B   .0701  .1560  .7402        .006
O2A   .1845  .0756  .5922        .006
O2B   .0651  .0747  .1963        .006
OH3A  .1822    .25  .5544  .965  .008
F3A   .1822    .25  .5544  .035  .008
OH3B  .0686    .25  .2358  .965  .009
F3B   .0686    .25  .2358  .035  .009
O4A   .3122 -.0046  .5627        .008
O4B  -.0651 -.0008  .2677       .0007
O5A   .3056  .1148 -.1646        .008
O5B  -.0540  .1139  .9503        .006
O6A   .2968  .1292  .3354        .007
O6B  -.0461  .1340  .4497        .009
O7A   .2933    .25  .0429        .009
O7B  -.0430    .25  .7568        .010
HA    .2353    .25  .5330  .965
HB    .0174    .25  .2492  .965