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Fluornatromicrolite |
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Andrade M B, Atencio D, Menezes L A D, Ellena J |
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The Canadian Mineralogist 49 (2011) 615-621 |
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The crystal structure of a microlite-group mineral with a formula near NaCaTa2O6F |
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from the Morro Redondo mine, Coronel Murta, Minas Gerias, Brazil |
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Locality: Morro Redondo mine, Coronel Murta, Minas Gerias, Brazil |
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_database_code_amcsd 0018462 |
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10.4396 10.4396 10.4396 90 90 90 *Fd3m |
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.125 .125 .125 |
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atom x y z occ Uiso |
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NaA .5 .5 .5 .44 .0181 |
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CaA .5 .5 .5 .44 .0181 |
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PbA .5 .5 .5 .01 .0181 |
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TaB 0 0 0 .85 .0126 |
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NbB 0 0 0 .07 .0126 |
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SiB 0 0 0 .06 .0126 |
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AsB 0 0 0 .02 .0126 |
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O1 .0684 .375 .375 .96 .0207 |
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OH1 .0684 .375 .375 .04 .0207 |
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F .375 .375 .375 .73 .013 |
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Saleeite |
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Yakubovich O V, Steele I M, Atencio D, Menezes L A, Chukanov N V |
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Crystallography Reports 53 (2008) 764-770 |
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Crystal structure of the (Mg,Fe)[UO2(P,As)O4]2*10H2O solid solution- |
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a novel mineral variety of saleeite |
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Locality: Eduardo Mine, Galileia County, Minas Gerais, Brazil |
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_database_code_amcsd 0012411 |
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6.952 19.865 6.969 90 90.806 90 P2_1/n |
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atom x y z occ Uiso |
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MgMg 0 .5 0 .810 .0123 |
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FeMg 0 .5 0 .190 .0123 |
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O1 .5057 .2029 .3410 .0131 |
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O2 .5224 .2962 .0117 .0112 |
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O3 .6069 .1999 .6932 .0136 |
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O4 .5576 .1173 .0202 .0124 |
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O5 .2236 .2012 .9749 .0130 |
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O6 .8747 .2070 .0740 .0136 |
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O7 .9031 .4964 .2733 .0161 |
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O8 .7697 .5683 .9272 .0149 |
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O9 .1704 .5808 .0676 .0163 |
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O10 .5651 .4298 .3613 .0207 |
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O11 .5255 .5854 .2373 .0163 |
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Hl .708 .570 .031 .014 |
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H2 .785 .609 .898 .014 |
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H3 .620 .392 .373 .05 |
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H4 .91 .525 .363 .08 |
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H5 .111 .618 .070 .04 |
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H6 .532 .415 .251 .05 |
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H7 .264 .571 .142 .04 |
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H8 .53 .561 .338 .14 |
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H9 .57 .622 .29 .14 |
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Hl0 .789 .481 .27 .08 |
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U .54987 .20666 .01584 .00964 |
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PP .05400 .25117 .02067 .670 .0087 |
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AsP .05400 .25117 .02067 .330 .0087 |
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Bendadaite |
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Kolitsch U, Atencio D, Chukanov N V, Zubkova N V, Menezes L A D, Coutinho J M V, |
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Birch W D, Schluter J, Pohl D, Kampf A R, Steele I M, Favreau G, Nasdala L, |
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Mockel S, Giester G, Pushcharovsky D Y |
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Mineralogical Magazine 74 (2010) 469-486 |
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Bendadaite, a new iron arsenate mineral of the arthurite group |
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Locality: Almerindo mine, Linopolis, Minas Gerais, Brazil |
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_database_code_amcsd 0015896 |
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10.200 9.718 5.5432 90 94.05 90 P2_1/c |
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atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) |
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Fe(1) .0 .0 .0 .948 .01304 .01469 .01264 .01210 -.00285 .00241 -.00171 |
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Fe(2) .45715 .13679 .33999 .931 .00815 .01042 .00689 .00716 .00032 .00074 .00007 |
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Al(2) .45715 .13679 .33999 .040 .00815 .01042 .00689 .00716 .00032 .00074 .00007 |
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As .298182 .426870 .32898 .741 .00792 .00861 .00787 .00738 .00010 .00130 .00012 |
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P .298182 .426870 .32898 .263 .00792 .00861 .00787 .00738 .00010 .00130 .00012 |
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O(1) .39899 .48388 .11976 .0122 .0136 .0117 .0116 -.0013 .0025 -.0014 |
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O(2) .35684 .48686 .59650 .0137 .0166 .0126 .0117 -.0005 -.0010 .0010 |
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O(3) .15115 .48741 .2615 .0179 .0161 .0207 .0170 .0015 .0028 .0016 |
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O(4) .29959 .25662 .32143 .0140 .0160 .0125 .0136 .0026 .0007 -.0004 |
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Oh .54491 .23380 .08027 .0140 .0167 .0130 .0124 .0034 .0033 .0026 |
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Ow(1) .12925 -.09593 .2979 .0241 .0213 .0304 .0205 -.0039 .0002 -.0015 |
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Ow(2) .04589 .18779 .1498 .0298 .0248 .0224 .0420 -.0031 .0008 -.0145 |
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H .586 .176 .999 .039 |
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H11 .208 .915 .262 .057 |
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H12 .128 .941 .456 .056 |
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H21 .118 .211 .226 .061 |
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H22 .992 .247 .181 .057 |
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Carlosbarbosaite |
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Atencio D, Roberts A C, Cooper M A, Menezes L A D, Coutinho J M V, |
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Stirling J A R, Venance K E, Ball N A, Moffatt E, Chaves M L S C, |
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Brandao P R G, Romano A W |
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Mineralogical Magazine 76 (2012) 75-90 |
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Carlosbarbosaite, ideally (UO2)2Nb2O6(OH)2*2H2O, a new hydrated uranyl |
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niobate mineral with tunnels from Jaguaracu, Minas Gerais, Brazil: |
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description and crystal structure |
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Locality: Jaguaracu, Minas Gerais, Brazil |
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_database_code_amcsd 0018664 |
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14.150 10.395 7.529 90 90 90 Cmcm |
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atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) |
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U .26634 .27203 .25 .72 .0343 .0279 .0507 .0244 -.0115 0 0 |
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Nb .38296 .5 0 .40 .0281 .0133 .0443 .0267 0 0 -.0001 |
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Ta .38296 .5 0 .26 .0281 .0133 .0443 .0267 0 0 -.0001 |
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Si .38296 .5 0 .13 .0281 .0133 .0443 .0267 0 0 -.0001 |
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Ti .38296 .5 0 .11 .0281 .0133 .0443 .0267 0 0 -.0001 |
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Al .38296 .5 0 .05 .0281 .0133 .0443 .0267 0 0 -.0001 |
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Fe .38296 .5 0 .05 .0281 .0133 .0443 .0267 0 0 -.0001 |
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Ca .5 .0127 .25 .28 .057 .055 .051 .066 0 0 0 |
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Nd .5 .0127 .25 .02 .057 .055 .051 .066 0 0 0 |
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Ce .5 .0127 .25 .02 .057 .055 .051 .066 0 0 0 |
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O(1) .3622 .1709 .25 .061 .097 .062 .023 -.047 0 0 |
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O(2) .1633 .3780 .25 .047 .048 .058 .035 -.000 0 0 |
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O(3) .3020 .3571 -.0398 .035 .026 .052 .027 -.015 -.003 .008 |
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O(4) .3758 .4471 .25 .026 .022 .042 .015 -.001 0 0 |
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OH .5 .6106 .0547 .033 .027 .051 .022 0 0 .003 |
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Wat .5 .126 -.022 .096 .12 .10 .075 0 0 -.001 |
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Lithiotantite |
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Menezes L A D, Yang H, Downs R T, Chaves M L S C, Persiano A C |
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Acta Crystallographica E68 (2012) i27-i28 |
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Lithiotantite, ideally LiTa3O8 |
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Locality: Murundu mine, the Jenipapo District, Itinga, Minas Gerais, Brazil |
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_database_code_amcsd 0018780 |
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7.4425 5.0493 15.2452 90 107.381 90 P2_1/c |
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atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) |
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TaM1 .74765 .24400 .07791 .641 .00508 .00614 .00390 .00485 .00065 .00108 -.00033 |
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NbM1 .74765 .24400 .07791 .359 .00508 .00614 .00390 .00485 .00065 .00108 -.00033 |
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TaM2 .98987 .24084 .33689 .665 .00466 .00518 .00380 .00496 .00056 .00143 .00038 |
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NbM2 .98987 .24084 .33689 .335 .00466 .00518 .00380 .00496 .00056 .00143 .00038 |
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TaM3 .50096 .23890 .333006 .874 .00528 .00517 .00520 .00565 -.00042 .00190 -.00014 |
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NbM3 .50096 .23890 .333006 .126 .00528 .00517 .00520 .00565 -.00042 .00190 -.00014 |
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LiM4 .2391 .2561 .0794 .96 .0030 |
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MnM4 .2391 .2561 .0794 .03 .0030 |
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NaM4 .2391 .2561 .0794 .01 .0030 |
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O1 .0002 .0608 .0979 .0064 |
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O2 .4176 .0670 .2181 .0059 |
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O3 .7653 .1008 .3443 .0073 |
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O4 .5368 .4210 .1011 .0064 |
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O5 .9144 .4112 .2154 .0054 |
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O6 .6436 .3931 .4606 .0078 |
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O7 .8524 .5637 .0489 .0073 |
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O8 .2755 .4123 .3444 .0063 |
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|
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