Enstatite
Smyth J R, Mierdel K, Keppler H, Langenhorst F, Dubrovinsky L, Nestola F
American Mineralogist 92 (2007) 973-976
Crystal chemistry of hydration in aluminous orthopyroxene
Locality: synthetic
_database_code_amcsd 0004362
18.1876 8.7352 5.1789 90 90 90 Pbca
atom      x      y      z  occ  Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
MgM2 .37904 .48367 .35223 .958 .0086  .0104  .0101  .0054 -.0012 -.0020  .0000
MgM1 .37604 .65378 .86086  .79 .0061  .0062  .0080  .0042 -.0001 -.0009 -.0002
AlM1 .37604 .65378 .86086  .21 .0061  .0062  .0080  .0042 -.0001 -.0009 -.0002
Si1  .27135 .34230 .04527      .0058  .0056  .0080  .0039 -.0006 -.0001  .0002
Si2  .47307 .33717 .80610  .75 .0075  .0068  .0097  .0060  .0001  .0002  .0004
Al2  .47307 .33717 .80610  .25 .0075  .0068  .0097  .0060  .0001  .0002  .0004
O1a  .18267  .3391  .0325      .0082  .0057  .0117  .0072 -.0012 -.0010  .0016
O2a  .31066  .5049  .0380      .0082  .0084  .0102  .0061 -.0020 -.0005  .0002
O3a  .30260  .2233 -.1737      .0083  .0079  .0121  .0051 -.0003  .0001 -.0017
O1b  .56356  .3374  .8088      .0090  .0077  .0114  .0079 -.0008  .0016  .0020
O2b  .43269  .4854  .6889      .0093  .0091  .0132  .0055 -.0017 -.0011  .0004
O3b  .44653  .1910  .6142      .0093  .0079  .0108  .0092  .0002  .0010 -.0023