Voltaite
Biagioni C, Mauro D, Pasero M, Bonaccorsi E, Lepore G O, Zaccarini F, Skogby H
American Mineralogist 105 (2020) 1088-1098
Crystal-chemistry of sulfates from the Apuan Alps (Tuscany, Italy).
VI. Tl-bearing alum-(K) and voltaite from the Fornovolasco mining complex
Locality: Fornovolasco mine, Apuan Alps, Italy
_database_code_amcsd 0020897
27.2635 27.2635 27.2635 90 90 90 *Fd3c
.375 .375 .375
atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
K .25 .25 .25 .936 .0358 .0358 .0358 .0358 .0106 .0106 .0106
Tl .25 .25 .25 .064 .0358 .0358 .0358 .0358 .0106 .0106 .0106
Fe1 0 0 0 .982 .0152 .0152 .0152 .0152 .0026 .0026 .0026
Mg1 0 0 0 .018 .0152 .0152 .0152 .0152 .0026 .0026 .0026
Fe2 .25 .10274 -.10274 .746 .0170 .0191 .0160 .0160 -.0005 -.0005 -.0003
Mg2 .25 .10274 -.10274 .254 .0170 .0191 .0160 .0160 -.0005 -.0005 -.0003
Al .125 .125 .125 .0129 .0129 .0129 .0129 .000 .000 .000
S .23742 .27552 .11854 .0148 .0158 .0142 .0145 .0000 .0001 -.0002
O1 .24984 .24646 .07377 .0230 .0271 .0237 .0181 .0047 -.0051 -.0038
O2 .22466 .32600 .10409 .0298 .044 .0168 .0289 .0038 -.0038 .0014
O3 .19484 .25393 .14332 .0391 .034 .036 .048 -.0129 .0153 -.0010
O4 .28004 .27514 .15208 .0303 .028 .044 .0193 .0061 -.0031 -.0077
OW5 .18263 .41982 .12142 .0163 .0121 .0281 .0085 -.0048 .0005 .0028
OW6 .0896 .1464 .0703 .25 .030 .026 .036 .028 -.007 -.006 .000
OW7 .0692 .0889 .1041 .25 .030 .026 .036 .028 -.007 -.006 .000
H52 .172 .424 .1530 .08
H53 .167 .433 .094 .08
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Voltaite
Mereiter K
Tschermaks Mineralogische und Petrographische Mitteilungen 18 (1972) 185-202
Die kristallstruktur des voltaits, K2Fe2+5Fe3+3Al[SO4]12*18H2O
_database_code_amcsd 0015642
27.254 27.254 27.254 90 90 90 *Fd3c
.375 .375 .375
atom x y z occ Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
K .25 .25 .25 2.42 .000815 .000815 .000815 .000293 .000293 .000293
Fe1 0 0 0 .77 .000259 .000259 .000259 .000067 .000067 .000067
Fe2+2 .25 .10260 -.10260 .833 1.00 .000343 .000337 .000337 -.000017 -.000017 -.000020
Fe3+2 .25 .10260 -.10260 .167 1.00 .000343 .000337 .000337 -.000017 -.000017 -.000020
Al .125 .125 .125 .75 .000252 .000252 .000252 .000000 .000000 .000000
S .23718 .27548 .11810 .85 .000310 .000276 .000273 -.000017 .000007 -.000020
O1 .24978 .24675 .07345 1.29 .000491 .000518 .000296 .000094 -.000081 -.000067
O2 .22387 .32574 .10382 1.86 .000936 .000370 .000569 .000074 -.000061 -.000003
O3 .19490 .25353 .14252 2.43 .000811 .000636 .001000 -.000293 .000320 .000003
O4 .27934 .27529 .15144 1.90 .000599 .000932 .000384 .000172 -.000118 -.000172
Ow5 .18041 .42171 .12172 1.84 .000461 .000781 .000616 .000104 .000050 .000017
Wat6 .08957 .14629 .07076 .25 1.59 .000596 .000589 .000417 .000125 -.000030 -.000145
Wat7 .06896 .08872 .10406 .25 1.84 .000337 .000670 .000848 -.000044 -.000114 .000098
H52 .149 .319 .071 2.85
H53 .104 .305 .079 2.85
Download AMC data (View Text File )Download CIF data (View Text File )Download diffraction data (View Text File )View JMOL 3-D Structure (permalink )
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