Breyite
Brenker F E, Nestola F, Brenker L, Peruzzo L, Harris J W
American Mineralogist 106 (2021) 38-43
Origin, properties, and structure of breyite:
The second most abundant mineral inclusion in super-deep diamonds
Locality: In a diamond from the Juina area, Mato Grosso State, Brazil
_database_code_amcsd 0020946
6.6970 9.2986 6.6501 83.458 76.226 69.581 P-1
atom     x      y      z  Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Ca1 .75613 .00066 .73730 .0130  .0113  .0165  .0106 -.0040 -.0019 -.0003
Ca2 .92091 .33567 .57443 .0122  .0107  .0177  .0092 -.0057 -.0022 -.0008
Ca3 .27088 .35134 .91503 .0148  .0135  .0171  .0134 -.0053 -.0007 -.0028
Si1 .47694 .30162 .45734 .0108  .0078  .0143  .0096 -.0027 -.0015 -.0010
Si2 .72580 .01583 .22948 .0104  .0089  .0144  .0081 -.0042 -.0016 -.0003
Si3 .83735 .29427 .10701 .0109  .0102  .0145  .0077 -.0044 -.0014  .0001
O1   .2296  .4035  .5423 .0135  .0093  .0191  .0122 -.0042 -.0030 -.0009
O2   .6104  .2645  .6402 .0136  .0104  .0192  .0112 -.0047 -.0026 -.0003
O3   .4956  .1373  .3631 .0142  .0120  .0193  .0117 -.0068  .0004 -.0029
O4   .6572  .9060  .1130 .0133  .0125  .0166  .0116 -.0050 -.0032 -.0015
O5   .9002  .9397  .3721 .0124  .0114  .0135  .0107 -.0008 -.0037 -.0022
O6   .8083  .1359  .0468 .0131  .0144  .0161  .0081 -.0049 -.0010 -.0015
O7   .8796  .4068  .9134 .0132  .0161  .0169  .0083 -.0082 -.0024  .0014
O8   .0282  .2571  .2320 .0134  .0133  .0190  .0083 -.0051 -.0041  .0007
O9   .5976  .3856  .2552 .0144  .0122  .0137  .0122 -.0017  .0033 -.0010