Pieczkaite Tait K, Ball N A, Hawthorne F C American Mineralogist 100 (2015) 1047-1052 Pieczkaite, ideally Mn5(PO4)3Cl, a new apatite-supergroup mineral from Cross Lake, Manitoba, Canada: Description and crystal structure Locality: Cross Lake, Manitoba, Canada _database_code_amcsd 0020469 9.504 9.504 6.347 90 90 120 P6_3/m atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Mn1 1/3 2/3 -.0060 .545 .0137 .0092 .0092 .0203 .0046 0 0 Ca1 1/3 2/3 -.0060 .425 .0137 .0092 .0092 .0203 .0046 0 0 Fe1 1/3 2/3 -.0060 .06 .0137 .0092 .0092 .0203 .0046 0 0 Mn2 .7291 .7532 .25 .77333 .0225 .030 .0186 .0227 .0148 0 0 Fe2 .7291 .7532 .25 .04667 .0225 .030 .0186 .0227 .0148 0 0 Ca2 .7291 .7532 .25 .18 .0225 .030 .0186 .0227 .0148 0 0 P1 .5955 .9725 .25 .0143 .0090 .0066 .0267 .0034 0 0 O1 .6486 .1527 .25 .0186 .018 .007 .027 .003 0 0 O2 .4081 .8675 .25 .0226 .006 .009 .050 .002 0 0 O3 .6565 .9219 .0564 .0243 .029 .021 .029 .018 .001 -.001 Cl1 0 0 .2179 .36 .021 OH1 0 0 .2179 .14 .021