Leucostaurite
Brugger J, Meisser N, Ansermat S, Krivovichev S V, Kahlenberg V, Belton D, Ryan C G
American Mineralogist 97 (2012) 1206-1212
Leucostaurite, Pb2[B5O9]Cl*0.5H2O, from the Atacama Desert: The first Pb-dominant
member of the hilgardite group, and micro-determination of boron minerals by PIGE
Locality: Mina Asuncion, Atacama Desert, Chile
_database_code_amcsd 0019064
11.376 11.505 6.5568 90 90 90 Pnn2
atom     x      y     z  Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Pb1  .0379 .76058 .3457 .0189  .0206  .0240  .0121  .0004 -.0003  .0002
Pb2  .7276 .97810 .5167 .0257  .0334  .0262  .0174  .0034  .0014  .0029
Cl1     .5      0  .780  .036   .023   .035   .050   .004      0      0
Cl2      0      0  .474  .032   .030   .021   .045  -.006      0      0
B1    .820   .735  .641  .013
B2    .741   .531  .517  .010
B3    .988   .753  .869  .010
B4    .712   .321  .503  .012
B5    .710   .713  .315  .015
O1    .944   .728  .691  .022
O2    .761   .625  .690  .022
O3    .811   .766  .432  .010
O4    .714   .583  .343  .023
O5    .919   .793  .019  .020
O6    .764   .822  .777  .014
O7    .776   .229  .597  .015
O8    .608   .760  .419  .017
O9    .740   .434  .597  .022
Wat10   .0     .5  .818   .07