Coralloite
Callegari A M, Boiocchi M, Ciriotti M E, Balestra C
American Mineralogist 97 (2012) 727-734
Coralloite, Mn2+Mn3+2(AsO4)2(OH)2*4H2O, a new mixed valence Mn hydrate arsenate:
crystal structure and relationships with bermanite and whitmoreite mineral groups
Locality: Monte Nero mine, Rocchetta Vara, La Spezia, Liguria, Italy
_database_code_amcsd 0018861
5.5828 9.7660 5.5455 94.467 111.348 93.850 P1
atom        x     y      z  Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Mn3+M1      0     0      0 .0113  .0084  .0146  .0117  .0034  .0044  .0010
Mn3+M2  .5006 .0047  .4997 .0107  .0081  .0143  .0107  .0037  .0042  .0009
Mn2+M3  .1697 .5046  .3445 .0167  .0175  .0165  .0193  .0033  .0104  .0022
As1     .0643 .1933  .5121 .0109  .0100  .0126  .0120  .0029  .0061  .0014
As2    -.0661 .8037  .4850 .0121  .0100  .0138  .0141  .0029  .0064  .0012
O1     -.0734 .1508  .1866 .0114  .0133  .0119  .0084  .0078  .0026 -.0002
O2      .0608 .8431  .8124 .0160  .0128  .0242  .0141  .0066  .0077  .0031
O3     -.1079 .1081  .6569 .0166  .0138  .0223  .0147 -.0039  .0080  .0004
O4      .1118 .8912  .3496 .0146  .0100  .0172  .0190  .0004  .0080  .0039
O5      .3748 .1571  .6328 .0164  .0153  .0156  .0176  .0047  .0054 -.0012
O6      .6282 .8512  .3668 .0125  .0053  .0205  .0101  .0050  .0012 -.0031
O7      .0459 .3631  .5591 .0165  .0261  .0083  .0222  .0025  .0160  .0082
O8     -.0853 .6376  .4180 .0208  .0083  .0225  .0301  .0040  .0061 -.0030
OH1     .3683 .0667  .1556 .0123  .0078  .0207  .0099  .0015  .0058 -.0015
OH2     .6237 .9414 -.1536 .0130  .0077  .0188  .0136  .0032  .0042  .0058
Wat1    .4615 .3745  .2708 .0348  .0307  .0383  .0492  .0150  .0259  .0208
Wat2    .2816 .6416  .1007 .0187  .0170  .0204  .0179  .0029  .0053  .0028
Wat3   -.1225 .4105 -.0471 .0241  .0220  .0241  .0281  .0021  .0131 -.0048
Wat4    .4961 .6011  .7240 .0349  .0298  .0409  .0313 -.0036  .0103 -.0012