Piemontite
Nagashima M, Akasada M
American Mineralogist 95 (2010) 1237-1246
X-ray Rietveld and 57Fe Mossbauer studies of epidote and piemontite on the join
Ca2Al2FeSi3O12(OH) - Ca2Al2MnSi3O12(OH) formed by hydrothermal synthesis
Locality: synthetic
Sample: q=0.25, run 30
_database_code_amcsd 0016954
8.8727 5.6686 10.1682 90 115.480 90 P2_1/m
atom     x     y     z occ
Ca1  .7554   .75 .1520
Ca2  .6006   .75 .4233
AlM1     0     0     0 .84
FeM1     0     0     0 .01
MnM1     0     0     0 .15
AlM2     0     0    .5
AlM3 .2983   .25 .2240 .31
FeM3 .2983   .25 .2240 .11
MnM3 .2983   .25 .2240 .58
Si1  .3374   .75 .0460
Si2  .6847   .25 .2748
Si3  .1872   .75 .3218
O1   .2328  .992 .0346
O2   .3061 .9794 .3433
O3   .7982  .019 .3433
O4    .062   .25  .137
O5    .041   .75  .148
O6    .064   .75  .408
O7    .514   .75 .1793
O8    .523   .25 .3100
O9    .622   .25 .0975
OH10  .083   .25 .4308