Moore P B, Shen J, Araki T
American Mineralogist 70 (1985) 171-181
Crystal chemistry of the (M2)3+ phi2 sheet: Structural principles and crystal
structures of ruizite, macfallite and orientite
_database_code_amcsd 0000965
9.074 19.130 6.121 90 90 90 Bbmm
atom x y z occ
Mn1 .25 0 .25
Mn2 .4549 .25 .2499 .5
Ca .6978 .1585 0
Si1 .1057 .25 0 .5
O1 .9833 .1808 0
O2 .2049 .25 .2245
Si2 .0301 .097 0
O3 .1294 .0812 .2164
O4 .8729 .0584 0
OH5 .3677 .0308 0
OH6 .4325 .1766 0 .5
OH7 .4325 .1766 0 .5
Mellini M, Merlino S, Pasero M
American Mineralogist 71 (1986) 176-187
X-ray and HRTEM structure analysis of orientite
_database_code_amcsd 0001007
9.044 6.091 19.031 90 90 90 P2mm
atom x y z occ Biso
Ca1 .2876 .5 .1608 .39
Ca2 .8136 0 .1569 .75
Ca3 .7093 .5 .6571 1.38
Ca4 .1836 0 .6578 .36
Mn1 .2560 .2511 .0018 .19
Mn2 .5507 .2488 .25 .84 .06
Mn3 .7511 .2591 -.0028 .47
Si1 -.0256 .5 .0934 1.12
Si2 .4763 0 .1006 .06
Si3 -.1026 .5 .25 .84 .06
Si4 .1949 0 .25 .84 .37
Si5 .0454 .5 .5963 .06
Si6 .5258 0 .5971 .25
Si7 .1197 .5 .75 .42
Si8 .6029 0 .75 .68 4.38
Mn2A .0691 .2295 .25 .16 1.41
Si3A .3929 0 .25 .16 .06
Si4A .6936 .5 .25 .16 .06
Mn2B .4615 .2534 .75 .32 .49
Si4B .7956 0 .75 .32 1.00
O1 .3788 .2143 .0791 .62
O2 .8691 .2886 .0781 .30
O3 .1394 .5 .0616 1.25
O4 .6301 0 .0579 .06
O5 .2932 .2383 .25 1.64
O6 .7910 .2840 .25 .74
O7 .5599 0 .1779 .36
O8 .0110 .5 .1810 1.02
OH9 .0694 0 .1799 1.62
OH10 .1301 0 .0247 .56
O11 .6409 .5 .0292 .06
OH12 .5284 .5 .1806 2.14
O13 .6270 .2137 .5877 .19
O14 .1289 .2615 .5807 1.07
O15 -.1165 .5 .5604 1.08
O16 .3778 0 .5515 .42
O17 .1954 .2537 .75 .93
O18 .4813 0 .6834 .06
O19 .0060 .5 .6768 .40
OH20 .8617 0 .5410 .06
OH21 .3773 .5 .5268 1.10
O22 .7054 .2104 .75 .05
OH23 -.0782 0 .6799 2.01
OH24 .4300 .5 .6771 .72
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