Rastsvetaeva R K, Tamazyan R A, Pushcharovsky D Y, Nadezhina T N
European Journal of Mineralogy 6 (1994) 503-509
Crystal structure and microtwinning of K-rich nenadkevichite
Note: Wat4 y-coordinate changed to reproduce reported bond lengths
14.692 14.164 7.859 90 117.87 90 Cm
atom x y z occ Biso
K1 .5001 .8194 .983 .76 3.4
K2 .432 0 .705 .53 6.8
K3 .910 0 .648 .44 3.0
K4 .081 0 .288 .49 3.7
Na1 .009 0 .468 .58 1.9
Na2 .796 0 .529 .39 8.8
Na3 .006 0 .109 .25 13.9
NbM1 0 .7691 .5 .6 .32
TiM1 0 .7691 .5 .4 .32
NbM2 .7434 .7480 .4644 .5 .53
TiM2 .7434 .7480 .4644 .5 .53
Si1 .2170 .8920 .7800 1.5
Si2 .6918 .8916 .736 2.0
Si3 .8055 .8901 .186 .9
Si4 .3287 .8914 .230 1.0
O1 .911 .766 .586 3.2
O2 .925 .873 .308 1.8
O3 .268 .867 .341 1.7
O4 .274 .823 .702 3.3
O5 .429 .8256 .285 1.4
O6 .375 0 .280 2.9
O7 .2512 .879 .003 2.0
O8 .227 0 .730 1.8
O9 .104 .7682 .372 .6
O10 .092 .870 .665 2.3
O11 .747 .8652 .601 2.1
O12 .732 .8244 .245 .9
O13 .591 .826 .672 2.3
O14 .656 0 .711 1.5
O15 .771 .872 .956 2.9
O16 .777 0 .204 1.7
Wat1 .030 .880 .982 .56 2.7
Wat2 .564 0 .212 .61 4.2
Wat3 .299 0 .513 .32 2.6
Wat4 .036 .827 .025 .37 12.5
Wat5 .514 0 .891 .36 6.1
Rastsvetaeva R K, Chukanov N V, Pekov I V
Doklady Akademii Nauk SSSR 357 (1997) 364-367
Crystal structure of a new mineral - titanium analog of orthorhombic
nenadkevichite
7.350 14.153 7.124 90 90 90 Pbam
Na1 .2636 .2513 0 .51 2.9
Na2 .1979 .0244 .5 .50 3.6
Na3 .192 .005 .5 .08 7.9
TiM .2856 .2590 .5 .7 1.54
NbM .2856 .2590 .5 .3 1.54
Si .0103 .3897 .2252 1.45
O1 .0121 .3816 0 2.8
O2 0 .5 .2838 3.7
O3 .1950 .3454 .3049 2.6
O4 .3323 .1625 .3040 2.5
O5 .0160 .1991 .5 1.8
Ow6 .016 .1616 0 .93 7.5
Ow7 0 0 .273 .92 7.9
H1 .080 0 .150 3.0
H2 .032 .148 .087 3.0
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