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: BR1A
Locality: Monte Brugiana, Alpi Apuane, Italy
_database_code_amcsd 0006434
8.884 5.685 10.152 90 115.00 90 P2_1/m
atom     x     y     z   occ  Uiso
CaA1 .7580   .75 .1518   .74 .0101
MnA1 .7580   .75 .1518  .245 .0101
CaA2 .5954   .75 .4261   .74 .0117
SrA2 .5954   .75 .4261   .03 .0117
LaA2 .5954   .75 .4261   .16 .0117
CeA2 .5954   .75 .4261   .04 .0117
PrA2 .5954   .75 .4261   .02 .0117
NdA2 .5954   .75 .4261   .06 .0117
SmA2 .5954   .75 .4261  .003 .0117
ThA2 .5954   .75 .4261  .004 .0117
AlM1     0     0     0 .5833 .0064
MgM1     0     0     0 .0266 .0064
MnM1     0     0     0  .245 .0064
FeM1     0     0     0   .13 .0064
AlM2     0     0 .5000 .5833 .0051
MgM2     0     0 .5000 .0266 .0051
MnM2     0     0 .5000  .245 .0051
FeM2     0     0 .5000   .13 .0051
AlM3 .2991   .25 .2194 .5833 .0087
MgM3 .2991   .25 .2194 .0266 .0087
MnM3 .2991   .25 .2194  .245 .0087
FeM3 .2991   .25 .2194   .13 .0087
Si1  .3421   .75 .0437       .0060
Si2  .6873   .25 .2761       .0059
Si3  .1867   .75 .3214       .0048
O1   .2367 .9920 .0354       .0106
O2   .3084 .9777 .3583       .0092
O3   .7990 .0152 .3362       .0098
O4   .0557   .25 .1303       .0068
O5   .0445   .75 .1502       .0087
O6   .0715   .75 .4121       .0069
O7   .5145   .75 .1806       .0111
O8   .5353   .25 .3211       .0172
O9   .6171   .25 .0994       .0151
O10  .0871   .25 .4323       .0069
H     .073   .25  .346         .02