American Mineralogist Crystal Structure Database

6 matching records for this search.

Matioliite
 
Atencio D, Coutinho J M V, Mascarenhas Y P, Ellena J A
Download am/vol91/AM91_1932.pdf
American Mineralogist 91 (2006) 1932-1936
Matioliite, the Mg-analogue of burangaite, from Gentil mine, Mendes Pimentel,
Minas Gerais, Brazil, and other occurrences
Locality: Gentil mine, Mendes Pimentel, Minas Gerais, Brazil
Sample: T = 120 K
_database_code_amcsd 0004259
25.075 5.0470 13.4370 90 110.97 90 C2/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)
Na        0 .6488   .25     .029   .028   .028   .030      0   .011      0
Mg      .25   .75    .5  .9 .019   .019   .022   .021      0   .011   .005
Fe      .25   .75    .5  .1 .031   .040   .005   .039  -.002   .002  -.013
Al1       0    .5    .5     .022   .024   .017   .028      0   .011  -.001
Al3   .1518 .4827 .6099     .022   .024   .016   .026  -.001   .010  -.001
Al4   .1412 .7234 .3518     .020   .024   .014   .024  -.001   .010      0
P1    .2161 .2341 .3281     .020   .025   .013   .024      0   .010   .001
P2    .0807 .2245 .3951     .021   .024   .015   .026      0   .010  -.001
O1    .0918 .4450 .3270     .025   .031   .015   .029  -.003   .013   .001
O2    .0805 .9559 .3422     .023   .029   .014   .028  -.002   .013  -.002
O3    .0213 .2766 .4018     .025   .025   .021   .028  -.001   .010  -.003
O4    .1258 .2215 .5073     .024   .027   .016   .028   .001   .009      0
O5    .1683 .7154 .5098     .022   .028   .016   .026      0   .012      0
O6    .2087 .4948 .3814     .023   .027   .014   .028   .001   .011  -.001
O7    .1972 .0002 .3826     .023   .027   .016   .028  -.002   .011   .002
O8    .1294 .7481 .2054     .023   .026   .016   .026  -.002   .009   .002
O9    .1756 .2440 .2113     .024   .026   .017   .028  -.001   .008  -.001
O10   .2775 .1904 .3411     .026   .028   .020   .031      0   .013  -.001
O11   .0748 .6282 .5645     .025   .027   .017   .032  -.002   .011  -.004
O12  -.0214 .7781 .3972     .026   .026   .019   .030  -.002   .009   .002
H5    .1627 .8143 .5453     .033
H8    .1417 .8647 .1973     .034
H11   .0723 .7290 .6016     .038
H12A -.0109 .9188 .3895     .038
H12B -.0618 .7643 .3588     .038
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Menezesite
 
Atencio D, Coutinho J M V, Doriguetto A C, Mascarenhas Y P, Ellena J, Ferrari V C
Download am/vol93/AM93_81.pdf
American Mineralogist 93 (2008) 81-87
Menezesite, the first natural heteropolyniobate, from Cajati, Sao Paulo, Brazil:
description and crystal structure
Locality: Jacupiranga mine, Cajati county, Sao Paulo, Brazil
_database_code_amcsd 0004492
13.017 13.017 13.017 90 90 90 Im3
atom      x     y     z   occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
NbA       0 .1174 .2405 .7683 .036  .0365  .0356  .0371      0      0 -.0016
TaA       0 .1174 .2405 .0300 .036  .0365  .0356  .0371      0      0 -.0016
TiA       0 .1174 .2405 .1917 .036  .0365  .0356  .0371      0      0 -.0016
ZrB     .25   .25   .25 .6850 .038  .0383  .0383  .0383 -.0018 -.0018 -.0018
ThB     .25   .25   .25 .0775 .038  .0383  .0383  .0383 -.0018 -.0018 -.0018
TiB     .25   .25   .25 .2375 .038  .0383  .0383  .0383 -.0018 -.0018 -.0018
FeC       0    .5     0 .0766 .045   .055   .021   .061      0      0      0
MnC       0    .5     0 .0766 .045   .055   .021   .061      0      0      0
MgC       0    .5     0 .3116 .045   .055   .021   .061      0      0      0
BaD       0     0     0 .7399 .032  .0319  .0319  .0319      0      0      0
ThD       0     0     0 .2400 .032  .0319  .0319  .0319      0      0      0
BaE    .391  .256     0 .1225 .128   .060    .28   .045   .025      0      0
CaE    .391  .256     0 .0258 .128   .060    .28   .045   .025      0      0
KE     .391  .256     0 .0442 .128   .060    .28   .045   .025      0      0
O1    .2076 .3899 .3091       .030   .034   .030   .027   .000  -.004   .001
O2    .3402     0     0       .037   .030   .036   .045      0      0      0
O3    .1009     0 .1711       .027   .022   .024   .037      0   .001      0
Wat41 .3824 .3771     0    .5 .033
Wat42 .3581 .4175     0    .5 .027
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Rankamaite
Download hom/rankamaite.pdf
Atencio D, Contreira R R, Mills S J, Coutinho J M V,
Honorato S B, Ayala A P, Ellena J, De Andrade M B
 
American Mineralogist 96 (2011) 1455-1460
Rankamaite from the Urubu pegmatite, Itinga, Minas Gerais,
Brazil: Crystal chemistry and Rietveld refinement
Note: Identification of OH not reported
Locality: Urubu pegmatite, Itinga, Minas Gerais, Brazil
_database_code_amcsd 0018556
17.224 17.687 3.9361 90 90 90 C222
atom      x      y  z occ Biso
K1    .8322      0 .5 .63  4.5
Na2   .4990      0 .5 .43  4.5
Na3     .25    .25 .5 .68  4.5
Ta1       0      0  0 .71    2
Nb1       0      0  0 .29    2
Ta2       0 .67188  0 .72    2
Nb2       0 .67188  0 .28    2
Ta3  .18037 .39406  0 .85    2
Al3  .18037 .39406  0 .15    2
Ta4  .11190 .82225  0 .89    2
Nb4  .11190 .82225  0 .11    2
O1    .3235  .1061 .5        1
O2    .6165  .6777 .5        1
O3    .1376  .2915  0        1
O4    .0711  .5780  0        1
O5    .2790  .3377  0        1
O6    .1103  .9442  0        1
O7        0  .3334 .5        1
O8        0  .2011  0        1
O9    .7108      0  0        1
O10       0      0 .5        1
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Hydrokenomicrolite
 
Andrade M B, Atencio D, Chukanov N V, Ellena J
 
American Mineralogist 98 (2013) 292-296
Hydrokenomicrolite, ([_],H2O)2Ta2(O,OH)6(H2O), a new microlite-group mineral
from Volta Grande pegmatite, Nazareno, Minas Gerais, Brazil
Locality: Volta Grande pegmatite, Nazareno, Minas Gerais, Brazil
_database_code_amcsd 0019783
10.454 10.454 10.454 90 90 90 *Fd3m
.125 .125 .125
atom      x    y    z  occ  Uiso
BaA      .5   .5   .5  .33 .0556
SrA      .5   .5   .5  .27 .0556
UA       .5   .5   .5  .10 .0556
CeA      .5   .5   .5  .02 .0556
LaA      .5   .5   .5  .02 .0556
MnA      .5   .5   .5  .02 .0556
NdA      .5   .5   .5  .02 .0556
BiA      .5   .5   .5  .01 .0556
CaA      .5   .5   .5  .01 .0556
PbA      .5   .5   .5  .01 .0556
TaB       0    0    0 .875 .0306
NbB       0    0    0  .05 .0306
SnB       0    0    0  .05 .0306
SiB       0    0    0  .02 .0306
TiB       0    0    0 .005 .0306
OX    .3191 .125 .125 .962  .038
OHX   .3191 .125 .125 .038  .038
WatY   .375 .375 .375  .32  .051
CsY    .375 .375 .375  .03  .051
WatY'  .747 .747 .747  .65  .051
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Fluornatromicrolite
 
Andrade M B, Atencio D, Menezes L A D, Ellena J
 
The Canadian Mineralogist 49 (2011) 615-621
The crystal structure of a microlite-group mineral with a formula near NaCaTa2O6F
from the Morro Redondo mine, Coronel Murta, Minas Gerias, Brazil
Locality: Morro Redondo mine, Coronel Murta, Minas Gerias, Brazil
_database_code_amcsd 0018462
10.4396 10.4396 10.4396 90 90 90 *Fd3m
.125 .125 .125
atom     x    y    z occ  Uiso
NaA     .5   .5   .5 .44 .0181
CaA     .5   .5   .5 .44 .0181
PbA     .5   .5   .5 .01 .0181
TaB      0    0    0 .85 .0126
NbB      0    0    0 .07 .0126
SiB      0    0    0 .06 .0126
AsB      0    0    0 .02 .0126
O1   .0684 .375 .375 .96 .0207
OH1  .0684 .375 .375 .04 .0207
F     .375 .375 .375 .73  .013
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Fluorcalciomicrolite
 
Andrade M B, Atencio D, Persiano A I C, Ellena J
 
Mineralogical Magazine 77 (2013) 2989-2996
Fluorcalciomicrolite, (Ca,Na,_)2Ta2O6F, a new microlite-group mineral
from Volta Grande pegmatite, Nazareno, Minas Gerais, Brazil
Locality: Volta Grande pegmatite, Nazareno, Minas Gerais, Brazil
_database_code_amcsd 0019993
10.4191 10.4191 10.4191 90 90 90 *Fd-3m
.125 .125 .125
atom    x    y     z  occ   Uiso U(1,1) U(2,2) U(3,3)  U(1,2)  U(1,3)  U(2,3)
CaA     0    0    .5  .53  .0130  .0130  .0130  .0130  -.0041  -.0041  -.0041
NaA     0    0    .5  .41  .0130  .0130  .0130  .0130  -.0041  -.0041  -.0041
TaB     0    0     0 .895 .00438 .00438 .00438 .00438 -.00062 -.00062 -.00062
NbB     0    0     0 .105 .00438 .00438 .00438 .00438 -.00062 -.00062 -.00062
OX   .125 .125 .3183  .99  .0087  .0082  .0082  .0097   .0051       0       0
OHX  .125 .125 .3183  .01  .0087  .0082  .0082  .0097   .0051       0       0
FY   .125 .125  .625  .79  .0121  .0121  .0121  .0121       0       0       0
OHY  .125 .125  .625  .21  .0121  .0121  .0121  .0121       0       0       0
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Total number of retrieved datasets: 6
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