Shakhdaraite-(Y)
Pautov L A, Mirakov M A, Sokolova E, Day M C, Hawthorne F C, Schodibekov M A, Karpenko V Y,
Makhmadsharif S, Faiziev A R
The Canadian Mineralogist 60 (2022) 369-382
Shakhdaraite-(Y), ScYNb2O8, from the Leskhozovskaya granitic pegmatite, The Valley
of the Shakhdara River, Southwestern Pamir, Gorno-Badakhshanskii Autonomous Region,
Tajikistan: New mineral description and crystal structure
Locality: Leskhozovskaya granitic pegmatite, The Valley of the Shakhdara River, Tajikistan
_database_code_amcsd 0021089
9.930 5.6625 5.2108 90 92.38 90 P2/c
atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
NbM(1A) .75537 .3147 .2262 .88 .0136 .0147 .0139 .0118 -.0001 -.0031 .0017
TaM(1A) .75537 .3147 .2262 .015 .0136 .0147 .0139 .0118 -.0001 -.0031 .0017
TiM(1A) .75537 .3147 .2262 .005 .0136 .0147 .0139 .0118 -.0001 -.0031 .0017
NbM(1B) .746 .291 .278 .075 .026 .030 .035 .013 -.001 -.002 .011
SnM(1B) .746 .291 .278 .025 .026 .030 .035 .013 -.001 -.002 .011
ScM(2) 0 .81831 .25 .83 .0178 .0168 .0202 .0164 0 -.0001 0
TaM(2) 0 .81831 .25 .07 .0178 .0168 .0202 .0164 0 -.0001 0
MnM(2) 0 .81831 .25 .04 .0178 .0168 .0202 .0164 0 -.0001 0
U4+M(2) 0 .81831 .25 .03 .0178 .0168 .0202 .0164 0 -.0001 0
W6+M(2) 0 .81831 .25 .02 .0178 .0168 .0202 .0164 0 -.0001 0
PbM(2) 0 .81831 .25 .01 .0178 .0168 .0202 .0164 0 -.0001 0
YM(3A) .5 .7706 .25 .53 .0126 .0128 .0151 .0097 0 .0007 0
YbM(3A) .5 .7706 .25 .07 .0126 .0128 .0151 .0097 0 .0007 0
DyM(3A) .5 .7706 .25 .06 .0126 .0128 .0151 .0097 0 .0007 0
ErM(3A) .5 .7706 .25 .03 .0126 .0128 .0151 .0097 0 .0007 0
GdM(3A) .5 .7706 .25 .02 .0126 .0128 .0151 .0097 0 .0007 0
CeM(3A) .5 .7706 .25 .01 .0126 .0128 .0151 .0097 0 .0007 0
NdM(3A) .5 .7706 .25 .01 .0126 .0128 .0151 .0097 0 .0007 0
SmM(3A) .5 .7706 .25 .01 .0126 .0128 .0151 .0097 0 .0007 0
TbM(3A) .5 .7706 .25 .01 .0126 .0128 .0151 .0097 0 .0007 0
HoM(3A) .5 .7706 .25 .01 .0126 .0128 .0151 .0097 0 .0007 0
TmM(3A) .5 .7706 .25 .01 .0126 .0128 .0151 .0097 0 .0007 0
LuM(3A) .5 .7706 .25 .01 .0126 .0128 .0151 .0097 0 .0007 0
CaM(3B) .5 .820 .25 .09 .026 .025 .026 .029 0 .0045 0
MnM(3B) .5 .820 .25 .06 .026 .025 .026 .029 0 .0045 0
ThM(3B) .5 .820 .25 .04 .026 .025 .026 .029 0 .0045 0
U4+M(3B) .5 .820 .25 .03 .026 .025 .026 .029 0 .0045 0
O1 .6247 .0980 .0913 .0274 .0326 .0228 .0269 -.0015 .0025 -.0006
O2 .6381 .5794 .0123 .0394 .0269 .036 .055 .0023 -.0025 .0210
O3 .8621 .3885 -.0824 .0244 .0280 .0201 .0248 .0024 -.0016 .0025
O4 .8855 .1145 .4082 .0240 .0242 .0215 .0262 -.0006 -.0002 -.0039
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