Proshchenkoite-(Y)
Raade G, Grice J D, Erambert M, Kristiansson P, Witzke T
Mineralogical Magazine 72 (2008) 1071-1082
Proshchenkoite-(Y) from Russia - a new mineral species in the vicanite group:
Descriptive data and crystal structure
Locality: Tommot REE-Nb deposit in Yakutia, Russia
_database_code_amcsd 0018903
10.7527 10.7527 27.4002 90 90 120 R3m
atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
NdM1 .87001 .12999 .68367 .70 .01824 .01697 .01697 .0179 .00637 .00201 -.00201
YM1 .87001 .12999 .68367 .30 .01824 .01697 .01697 .0179 .00637 .00201 -.00201
NdM2 .86573 .13427 .10116 .80 .02187 .02088 .02088 .0228 .0096 -.00088 .00088
CaM2 .86573 .13427 .10116 .20 .02187 .02088 .02088 .0228 .0096 -.00088 .00088
NaM3 .11449 .88551 -.09902 .39 .0328 .0263 .0263 .0480 .0147 .0101 -.0101
NdM3 .11449 .88551 -.09902 .33 .0328 .0263 .0263 .0480 .0147 .0101 -.0101
CaM3 .11449 .88551 -.09902 .20 .0328 .0263 .0263 .0480 .0147 .0101 -.0101
YM3 .11449 .88551 -.09902 .08 .0328 .0263 .0263 .0480 .0147 .0101 -.0101
NdM4 .12282 .87718 .46990 .42 .0211 .0183 .0183 .0201 .0043 .0019 -.0019
MnM4 .12282 .87718 .46990 .26 .0211 .0183 .0183 .0201 .0043 .0019 -.0019
YM4 .12282 .87718 .46990 .16 .0211 .0183 .0183 .0201 .0043 .0019 -.0019
CaM4 .12282 .87718 .46990 .11 .0211 .0183 .0183 .0201 .0043 .0019 -.0019
YM5 .13824 .86176 .22186 .70 .01688 .01782 .01782 .0170 .0104 -.00037 .00037
NdM5 .13824 .86176 .22186 .26 .01688 .01782 .01782 .0170 .0104 -.00037 .00037
ThM5 .13824 .86176 .22186 .03 .01688 .01782 .01782 .0170 .0104 -.00037 .00037
PbM5 .13824 .86176 .22186 .01 .01688 .01782 .01782 .0170 .0104 -.00037 .00037
Fe 0 0 0 .83 .0215 .0253 .0253 .0139 .0127 0 0
Mn 0 0 0 .15 .0215 .0253 .0253 .0139 .0127 0 0
Ti 0 0 0 .02 .0215 .0253 .0253 .0139 .0127 0 0
Si1 .16972 .83028 .04725 .0217 .0182 .0182 .0255 .0068 .0004 -.0004
Si2 .82858 .17142 -.04047 .0195 .0167 .0167 .0255 .0086 -.0006 .0006
B -.0821 .0821 .2962 .019 .010 .010 .025 -.004 -.005 .005
P 0 0 .78864 .70 .0308 .0325 .0325 .027 .0163 0 0
Si 0 0 .78864 .26 .0308 .0325 .0325 .027 .0163 0 0
As 0 0 .78864 .04 .0308 .0325 .0325 .027 .0163 0 0
Ca 0 0 .57832 .0336 .0398 .0398 .0211 .0199 0 0
O1 .0837 -.0837 .0525 .0252 .0147 .0147 .041 .003 -.0042 .0042
O2 .1867 .8133 -.0102 .0272 .0276 .0276 .027 .014 .0038 -.0038
O3 .3274 -.0683 .07292 .0233 .0237 .025 .022 .0133 -.0003 .0048
O4 -.0852 .0852 -.0526 .037 .0234 .0234 .065 .013 .002 -.002
O5 .8107 .1893 .0188 .0218 .0247 .0247 .016 .012 -.0009 .0009
O6 .6661 .0851 -.06171 .0312 .020 .037 .025 .005 -.008 -.008
O7 .0778 -.0778 .3069 .0251 .0202 .0202 .031 .007 .0024 -.0024
O8 -.0977 .0977 .2408 .0235 .0223 .0223 .018 .005 .0005 -.0005
F9 .0852 -.0852 .1475 .0425 .042 .042 .035 .015 -.0044 .0044
O10 0 0 .8468 .028 .029 .029 .027 .015 0 0
O11 .1514 .1192 .7680 .5 .049 .027 .055 .033 -.005 -.003 .001
F12 -.0899 .0899 .5124 .0333 .0287 .0287 .038 .011 .0074 -.0074
F13 0 0 .6633 .022 .014 .014 .038 .0072 0 0
F14 .0156 .3030 .84079 .0437 .043 .050 .042 .026 -.015 -.005
F15 0 0 .4377 .047 .052 .052 .037 .026 0 0
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