Chiappinoite-(Y)
Kampf A R, Housley R M
European Journal of Mineralogy 27 (2015) 91-97
Chiappinoite-(Y), Y2Mn(Si3O7)4, a new layer silicate found in peralkaline syenitic
ejecta from the Agua de Pau volcano, Azores
Locality: Agua de Pau volcano, San Miguel Island, Azores District, Portugal
_database_code_amcsd 0020339
7.5549 15.2342 19.6418 90 90 90 Ibam
atom      x      y      z  occ   Uiso U(1,1) U(2,2) U(3,3) U(1,2)  U(1,3) U(2,3)
Y         0 .22900    .25 .585 .00779 .00617 .00770 .00952      0 -.00069      0
Ce        0 .22900    .25  .09 .00779 .00617 .00770 .00952      0 -.00069      0
Dy        0 .22900    .25  .05 .00779 .00617 .00770 .00952      0 -.00069      0
Na        0 .22900    .25  .05 .00779 .00617 .00770 .00952      0 -.00069      0
Nd        0 .22900    .25 .045 .00779 .00617 .00770 .00952      0 -.00069      0
Er        0 .22900    .25  .04 .00779 .00617 .00770 .00952      0 -.00069      0
La        0 .22900    .25 .035 .00779 .00617 .00770 .00952      0 -.00069      0
Gd        0 .22900    .25 .035 .00779 .00617 .00770 .00952      0 -.00069      0
Yb        0 .22900    .25  .03 .00779 .00617 .00770 .00952      0 -.00069      0
Sm        0 .22900    .25 .015 .00779 .00617 .00770 .00952      0 -.00069      0
Pr        0 .22900    .25  .01 .00779 .00617 .00770 .00952      0 -.00069      0
Mn        0      0    .25  .61  .0119  .0148  .0081  .0128      0       0      0
Ca        0      0    .25  .25  .0119  .0148  .0081  .0128      0       0      0
Fe        0      0    .25  .09  .0119  .0148  .0081  .0128      0       0      0
Si1  .25889 .07589 .35271      .00901  .0089  .0092  .0090  .0011  -.0010 -.0003
Si2  .14882 .37659 .35242      .00910  .0100  .0088  .0085  .0006  -.0006 -.0007
Si3  .17597 .13038     .5       .0106  .0114  .0116  .0089  .0028       0      0
Si4  .26475 .33083     .5       .0098  .0096  .0103  .0093 -.0009       0      0
O1    .0910 .10917 .31185       .0142  .0111  .0156  .0157  .0012  -.0024  .0042
O2    .2351 .29947 .30893       .0126  .0137  .0103  .0139  .0000   .0016 -.0025
O3    .4372 .13088 .33201       .0133  .0107  .0140  .0154  .0001  -.0014  .0006
O4    .2159 .47368 .33012       .0141  .0178  .0101  .0145 -.0011  -.0005 -.0005
O5    .2401 .07713 .43434       .0173  .0228  .0189  .0103  .0025   .0002 -.0012
O6    .1654 .36742 .43380       .0189  .0216  .0248  .0104  .0047  -.0022 -.0001
O7    .2641 .22602     .5       .0286   .040  .0129  .0328  .0006       0      0
O8    .4652  .3630     .5       .0324  .0123   .050  .0349 -.0103       0      0