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Matioliite |
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Atencio D, Coutinho J M V, Mascarenhas Y P, Ellena J A |
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American Mineralogist 91 (2006) 1932-1936 |
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Matioliite, the Mg-analogue of burangaite, from Gentil mine, Mendes Pimentel, |
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Minas Gerais, Brazil, and other occurrences |
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Locality: Gentil mine, Mendes Pimentel, Minas Gerais, Brazil |
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Sample: T = 120 K |
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_database_code_amcsd 0004259 |
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25.075 5.0470 13.4370 90 110.97 90 C2/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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Na 0 .6488 .25 .029 .028 .028 .030 0 .011 0 |
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Mg .25 .75 .5 .9 .019 .019 .022 .021 0 .011 .005 |
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Fe .25 .75 .5 .1 .031 .040 .005 .039 -.002 .002 -.013 |
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Al1 0 .5 .5 .022 .024 .017 .028 0 .011 -.001 |
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Al3 .1518 .4827 .6099 .022 .024 .016 .026 -.001 .010 -.001 |
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Al4 .1412 .7234 .3518 .020 .024 .014 .024 -.001 .010 0 |
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P1 .2161 .2341 .3281 .020 .025 .013 .024 0 .010 .001 |
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P2 .0807 .2245 .3951 .021 .024 .015 .026 0 .010 -.001 |
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O1 .0918 .4450 .3270 .025 .031 .015 .029 -.003 .013 .001 |
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O2 .0805 .9559 .3422 .023 .029 .014 .028 -.002 .013 -.002 |
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O3 .0213 .2766 .4018 .025 .025 .021 .028 -.001 .010 -.003 |
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O4 .1258 .2215 .5073 .024 .027 .016 .028 .001 .009 0 |
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O5 .1683 .7154 .5098 .022 .028 .016 .026 0 .012 0 |
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O6 .2087 .4948 .3814 .023 .027 .014 .028 .001 .011 -.001 |
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O7 .1972 .0002 .3826 .023 .027 .016 .028 -.002 .011 .002 |
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O8 .1294 .7481 .2054 .023 .026 .016 .026 -.002 .009 .002 |
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O9 .1756 .2440 .2113 .024 .026 .017 .028 -.001 .008 -.001 |
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O10 .2775 .1904 .3411 .026 .028 .020 .031 0 .013 -.001 |
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O11 .0748 .6282 .5645 .025 .027 .017 .032 -.002 .011 -.004 |
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O12 -.0214 .7781 .3972 .026 .026 .019 .030 -.002 .009 .002 |
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H5 .1627 .8143 .5453 .033 |
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H8 .1417 .8647 .1973 .034 |
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H11 .0723 .7290 .6016 .038 |
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H12A -.0109 .9188 .3895 .038 |
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H12B -.0618 .7643 .3588 .038 |
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Menezesite |
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Atencio D, Coutinho J M V, Doriguetto A C, Mascarenhas Y P, Ellena J, Ferrari V C |
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American Mineralogist 93 (2008) 81-87 |
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Menezesite, the first natural heteropolyniobate, from Cajati, Sao Paulo, Brazil: |
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description and crystal structure |
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Locality: Jacupiranga mine, Cajati county, Sao Paulo, Brazil |
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_database_code_amcsd 0004492 |
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13.017 13.017 13.017 90 90 90 Im3 |
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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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NbA 0 .1174 .2405 .7683 .036 .0365 .0356 .0371 0 0 -.0016 |
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TaA 0 .1174 .2405 .0300 .036 .0365 .0356 .0371 0 0 -.0016 |
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TiA 0 .1174 .2405 .1917 .036 .0365 .0356 .0371 0 0 -.0016 |
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ZrB .25 .25 .25 .6850 .038 .0383 .0383 .0383 -.0018 -.0018 -.0018 |
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ThB .25 .25 .25 .0775 .038 .0383 .0383 .0383 -.0018 -.0018 -.0018 |
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TiB .25 .25 .25 .2375 .038 .0383 .0383 .0383 -.0018 -.0018 -.0018 |
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FeC 0 .5 0 .0766 .045 .055 .021 .061 0 0 0 |
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MnC 0 .5 0 .0766 .045 .055 .021 .061 0 0 0 |
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MgC 0 .5 0 .3116 .045 .055 .021 .061 0 0 0 |
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BaD 0 0 0 .7399 .032 .0319 .0319 .0319 0 0 0 |
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ThD 0 0 0 .2400 .032 .0319 .0319 .0319 0 0 0 |
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BaE .391 .256 0 .1225 .128 .060 .28 .045 .025 0 0 |
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CaE .391 .256 0 .0258 .128 .060 .28 .045 .025 0 0 |
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KE .391 .256 0 .0442 .128 .060 .28 .045 .025 0 0 |
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O1 .2076 .3899 .3091 .030 .034 .030 .027 .000 -.004 .001 |
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O2 .3402 0 0 .037 .030 .036 .045 0 0 0 |
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O3 .1009 0 .1711 .027 .022 .024 .037 0 .001 0 |
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Wat41 .3824 .3771 0 .5 .033 |
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Wat42 .3581 .4175 0 .5 .027 |
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Rankamaite |
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Atencio D, Contreira R R, Mills S J, Coutinho J M V, |
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Honorato S B, Ayala A P, Ellena J, De Andrade M B |
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American Mineralogist 96 (2011) 1455-1460 |
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Rankamaite from the Urubu pegmatite, Itinga, Minas Gerais, |
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Brazil: Crystal chemistry and Rietveld refinement |
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Note: Identification of OH not reported |
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Locality: Urubu pegmatite, Itinga, Minas Gerais, Brazil |
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_database_code_amcsd 0018556 |
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17.224 17.687 3.9361 90 90 90 C222 |
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atom x y z occ Biso |
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K1 .8322 0 .5 .63 4.5 |
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Na2 .4990 0 .5 .43 4.5 |
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Na3 .25 .25 .5 .68 4.5 |
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Ta1 0 0 0 .71 2 |
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Nb1 0 0 0 .29 2 |
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Ta2 0 .67188 0 .72 2 |
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Nb2 0 .67188 0 .28 2 |
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Ta3 .18037 .39406 0 .85 2 |
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Al3 .18037 .39406 0 .15 2 |
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Ta4 .11190 .82225 0 .89 2 |
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Nb4 .11190 .82225 0 .11 2 |
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O1 .3235 .1061 .5 1 |
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O2 .6165 .6777 .5 1 |
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O3 .1376 .2915 0 1 |
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O4 .0711 .5780 0 1 |
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O5 .2790 .3377 0 1 |
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O6 .1103 .9442 0 1 |
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O7 0 .3334 .5 1 |
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O8 0 .2011 0 1 |
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O9 .7108 0 0 1 |
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O10 0 0 .5 1 |
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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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| Download AMC data (View Text File)
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