Hendricks S B, Jefferson M E
American Mineralogist 23 (1938) 851-862
Crystal structure of vermiculites and mixed vermiculite-chlorites
_database_code_amcsd 0000019
5.33 9.18 28.85 90 93.25 90 Cc
atom x y z
Mg1 0 0 0
Mg2 0 1/3 0
Mg3 0 2/3 0
OH1 .180 .5 .040
OH2 -.180 5/6 -.040
O1 .180 5/6 .040
O2 -.180 .5 -.040
O3 .180 1/6 .040
O4 -.180 1/6 -.040
O5 -.048 .75 .115
O6 .048 .5833 -.115
O7 .452 .75 .115
O8 -.452 .5833 -.115
O9 .202 0 .115
O10 -.202 1/3 -.115
Si1 .196 5/6 .095
Si2 -.196 .5 -.095
Si3 -.304 2/3 .095
Si4 .304 2/3 -.095
American Mineralogist 24 (1939) 729-771
Polymorphism of the micas with optical measurements
Note: Biotite group
_database_code_amcsd 0000024
5.32 9.21 10.16 90 100.03 90 Cm
atom x y z occ
K .45 .50 .84
Mg1 .44 .33 .34
Mg2 .44 .00 .34
Si1 .02 .33 .06 .75
Si2 .37 .17 .62 .75
Al1 .02 .33 .06 .25
Al2 .37 .17 .62 .25
O1 .25 .25 .00
O2 .08 .33 .22
O3 .32 .17 .46
O4 .14 .25 .68
O5 .00 .50 .00
O6 .39 .00 .68
OH1 .08 .00 .22 .50
OH2 .32 .50 .46 .50
F1 .08 .00 .22 .50
F2 .32 .50 .46 .50
Note: data is reproduced from Jackson and West (1930)
_database_code_amcsd 0000025
5.32 9.21 20.08 90 95 90 C2/c
K 0 .083 .25
Mg1 .25 .083 0
Mg2 .75 .25 0
Si1 -.033 -.250 .135 .75
Si2 -.033 .417 .135 .75
Al1 -.033 -.250 .135 .25
Al2 -.033 .417 .135 .25
O1 .228 .333 .164
O2 .228 -.167 .164
O3 .480 .083 .164
O4 -.062 -.167 .055
O5 -.062 .417 .055
OH -.062 .083 .058 .50
F -.062 .083 .058 .50
_database_code_amcsd 0000026
5.3 5.3 30.0 90 90 120 P3_112
K 1/9 .0556 0
Mg1 1/9 2/9 1/6
Mg3 -2/9 -4/9 1/6
Mg3 4/9 8/9 1/6
Si1 -.22 .22 .078 .75
Si2 .44 -.44 .078 .75
Al1 -.22 .22 .078 .25
Al2 .44 -.44 .078 .25
O1 .11 .39 .06
O2 -.39 -.11 .06
O3 -.39 .39 .06
O4 -.22 .22 .13
O5 .44 -.44 .13
OH .11 -.11 .13 .50
F .11 -.11 .13 .50
_database_code_amcsd 0000027
9.2 5.3 60.0 90 90. 90 Cc
K1 0 .3333 .0825
K2 .3333 .6667 .2492
K3 .1667 .8333 .4158
Mg2 0 0 .1667
Mg3 0 0 .3333
Mg4 .1667 .5 0
Mg5 .1667 .5 .1667
Mg6 .1667 .5 .3333
Mg7 .3333 0 0
Mg8 .3333 0 .1667
Mg9 .3333 0 .3333
Si1 .3333 .3333 .0440 .75
Si2 0 .6667 .2107 .75
Si3 0 .3333 .3773 .75
Si4 .1667 .8333 .0440 .75
Si5 .1667 .1667 .2107 .75
Si6 .3333 .3333 .3773 .75
Si7 0 .6667 -.044 .75
Si8 .1667 .8333 .1227 .75
Si9 0 .6667 .2893 .75
Si10 .3333 .6667 -.044 .75
Si11 .3333 .3333 .1227 .75
Si12 .1667 .1667 .2893 .75
Al1 .3333 .3333 .0440 .25
Al2 0 .6667 .2107 .25
Al3 0 .3333 .3773 .25
Al4 .1667 .8333 .0440 .25
Al5 .1667 .1667 .2107 .25
Al6 .3333 .3333 .3773 .25
Al7 0 .6667 -.044 .25
Al8 .1667 .8333 .1227 .25
Al9 0 .6667 .2893 .25
Al10 .3333 .6667 -.044 .25
Al11 .3333 .3333 .1227 .25
Al12 .1667 .1667 .2893 .25
O1 .25 .0833 .0530
O2 .0833 .4167 .2197
O3 .1667 .3333 .3863
O4 .25 .5833 .0530
O5 .3333 .1667 .2197
O6 .4167 .0833 .3863
O7 .5 .3333 .0530
O8 .0833 .5833 .2197
O9 .4167 .5833 .3863
O10 .3333 .3333 .0170
O11 0 .6667 .1837
O12 0 .3333 .3503
O13 .1667 .8333 .0170
O14 .1667 .1667 .1837
O15 .3333 .3333 .3503
O16 0 .6667 -.017
O17 .1667 .8333 .1497
O18 0 .6667 .3163
O19 .3333 .6667 -.017
O20 .3333 .3333 .1497
O21 .1667 .1667 .3163
O22 .1667 .6667 -.053
O23 0 .8333 .1137
O24 .0833 .4167 .2803
O25 .4167 .4167 -.053
O26 .25 .0833 .1137
O27 .0833 .5833 .2803
O28 .4167 .5833 -.053
O29 .25 .5833 .1137
O30 .3333 .1667 .2803
OH1 0 .3333 .0170 .50
OH2 .3333 .6667 .1837 .50
OH3 .1667 .8333 .3503 .50
OH4 .1667 .1667 -.017 .50
OH5 0 .3333 .1497 .50
OH6 .3333 .6667 .3163 .50
F1 0 .3333 .0170 .50
F2 .3333 .6667 .1837 .50
F3 .1667 .8333 .3503 .50
F4 .1667 .1667 -.017 .50
F5 0 .3333 .1497 .50
F6 .3333 .6667 .3163 .50
_database_code_amcsd 0000028
5.3 5.3 60.0 90 90 120 P-1
K1 0 .1667 .0825
K2 .3333 .1667 .2492
K3 .3333 .5 .4158
Mg1 .3333 .1667 0
Mg2 0 .5 0
Mg3 .3333 .1667 .5
Mg4 0 .5 .5
Mg5 0 .8333 .1667
Mg6 .6667 .1667 .1667
Mg7 .3333 .5 .1837
Mg8 0 .1667 .5
Mg9 .3333 .8333 .3333
Mg10 .6667 .5 .3503
Si1 .3333 .8333 .0440 .75
Si2 .6667 .5 .0440 .75
Si3 0 .1667 .5440 .75
Si4 .3333 .8333 .5440 .75
Si5 .6667 .8333 .2107 .75
Si6 0 .5 .2107 .75
Si7 .6667 .5 .1227 .75
Si8 .3333 .8333 .1227 .75
Si9 0 .8333 .3773 .75
Si10 .6667 .1667 .3773 .75
Si11 0 .5 .2893 .75
Si12 .6667 .8333 .2893 .75
Al1 .3333 .8333 .0440 .25
Al2 .6667 .5 .0440 .25
Al3 0 .1667 .5440 .25
Al4 .3333 .8333 .5440 .25
Al5 .6667 .8333 .2107 .25
Al6 0 .5 .2107 .25
Al7 .6667 .5 .1227 .25
Al8 .3333 .8333 .1227 .25
Al9 0 .8333 .3773 .25
Al10 .6667 .1667 .3773 .25
Al11 0 .5 .2893 .25
Al12 .6667 .8333 .2893 .25
O1 .3333 .8333 .0170
O2 .6667 .5 .0170
O3 0 .6667 .0530
O4 .5 .6667 .0530
O5 .5 .1667 .0530
O6 0 .1667 .5170
O7 .3333 .8333 .5170
O8 .1667 0 .5530
O9 .6667 0 .5530
O10 .1667 .5 .5530
O11 .6667 .8333 .1837
O12 0 .5 .1837
O13 .6667 .5 .1497
O14 .3333 .8333 .1497
O15 .8333 .6667 .2197
O16 .8333 .1667 .2197
O17 .3333 .6667 .2197
O18 0 .6667 .1137
O19 .5 .6667 .1137
O20 .5 .1667 .1137
O21 0 .8333 .3503
O22 .6667 .1667 .3503
O23 0 .5 .3163
O24 .6667 .8333 .3163
O25 .8333 0 .3863
O26 .3333 0 .3863
O27 .8333 .5 .3863
O28 .8333 .1667 .2803
O29 .8333 .6667 .2803
O30 .3333 .6667 .2803
OH1 0 .1667 .0170 .50
OH2 .6667 .5 .5170 .50
OH3 .3333 .1667 .1837 .50
OH4 0 .1667 .1497 .50
OH5 .3333 .5 .3503 .50
OH6 .3333 .1667 .3163 .50
F1 0 .1667 .0170 .50
F2 .6667 .5 .5170 .50
F3 .3333 .1667 .1837 .50
F4 0 .1667 .1497 .50
F5 .3333 .5 .3503 .50
F6 .3333 .1667 .3163 .50
Multiple datasets can be concatenated into a single downloadable file by selecting the datasets and then hitting the "Download Selected Data" button.
Total number of retrieved datasets: 6 View in amc, download in amc
Return to AMCSD Home Page
