Piemontite
Bonazzi P, Garbarino C, Menchetti S
European Journal of Mineralogy 4 (1992) 23-33
Crystal chemistry of piemontites: REE-bearing
piemontite from Monte Brugiana, Alpi Apuane, Italy
Sample: BR1C
Locality: Monte Brugiana, Alpi Apuane, Italy
_database_code_amcsd 0006435
8.881 5.683 10.150 90 114.99 90 P2_1/m
atom     x     y     z   occ  Uiso
CaA1 .7575   .75 .1517   .74 .0085
MnA1 .7575   .75 .1517  .245 .0085
CaA2 .5953   .75 .4261   .74 .0117
SrA2 .5953   .75 .4261   .03 .0117
LaA2 .5953   .75 .4261   .16 .0117
CeA2 .5953   .75 .4261   .04 .0117
PrA2 .5953   .75 .4261   .02 .0117
NdA2 .5953   .75 .4261   .06 .0117
SmA2 .5953   .75 .4261  .003 .0117
ThA2 .5953   .75 .4261  .004 .0117
AlM1     0     0     0 .5833 .0080
MgM1     0     0     0 .0266 .0080
MnM1     0     0     0  .245 .0080
FeM1     0     0     0   .13 .0080
AlM2     0     0    .5 .5833 .0071
MgM2     0     0    .5 .0266 .0071
MnM2     0     0    .5  .245 .0071
FeM2     0     0    .5   .13 .0071
AlM3 .2991   .25 .2192 .5833 .0065
MgM3 .2991   .25 .2192 .0266 .0065
MnM3 .2991   .25 .2192  .245 .0065
FeM3 .2991   .25 .2192   .13 .0065
Si1  .3415   .75 .0432       .0071
Si2  .6875   .25 .2758       .0069
Si3  .1874   .75 .3217       .0043
O1   .2363 .9916 .0353       .0143
O2   .3090 .9778 .3569       .0081
O3   .7985 .0155 .3375       .0093
O4   .0555   .25 .1303       .0068
O5   .0447   .75 .1499       .0081
O6   .0714   .75 .4108       .0065
O7   .5141   .75 .1823       .0110
O8   .5335   .25 .3200       .0193
O9   .6186   .25 .1004       .0204
O10  .0871   .25 .4321       .0053
H      .04   .25   .36         .02