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Vermiculite |
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Gruner J W |
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American Mineralogist 19 (1934) 557-575 |
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The structures of vermiculites and their collapse by dehydration |
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Locality: Structure results from data of many samples |
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5.31 9.20 28.46 90 97.14 90 Cc |
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atom x y z |
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Mg1 0 0 0 |
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Mg2 0 1/3 0 |
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Mg3 0 2/3 0 |
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Si1 .397 0 .094 |
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Si2 .897 1/6 .094 |
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Si3 .603 0 .406 |
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Si4 .103 1/6 .406 |
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OH1 .858 5/6 .039 |
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OH2 .142 5/6 .461 |
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O1 .858 .5 .039 |
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O2 .858 1/6 .039 |
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O3 .161 1/12 .115 |
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O4 .661 1/12 .115 |
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O5 .911 1/3 .115 |
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O6 .839 1/12 .385 |
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O7 .339 1/12 .385 |
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O8 .089 1/3 .385 |
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O9 .142 .5 .461 |
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O10 .142 1/6 .461 |
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Vermiculite |
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Hendricks S B, Jefferson M E |
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American Mineralogist 23 (1938) 851-862 |
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Crystal structure of vermiculites and mixed vermiculite-chlorites |
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5.33 9.18 28.85 90 93.25 90 Cc |
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atom x y z |
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Mg1 0 0 0 |
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Mg2 0 1/3 0 |
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Mg3 0 2/3 0 |
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OH1 .180 .5 .040 |
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OH2 -.180 5/6 -.040 |
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O1 .180 5/6 .040 |
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O2 -.180 .5 -.040 |
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O3 .180 1/6 .040 |
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O4 -.180 1/6 -.040 |
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O5 -.048 .75 .115 |
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O6 .048 .5833 -.115 |
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O7 .452 .75 .115 |
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O8 -.452 .5833 -.115 |
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O9 .202 0 .115 |
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O10 -.202 1/3 -.115 |
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Si1 .196 5/6 .095 |
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Si2 -.196 .5 -.095 |
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Si3 -.304 2/3 .095 |
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Si4 .304 2/3 -.095 |
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|
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Vermiculite |
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Mathieson A M, Walker G F |
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American Mineralogist 39 (1954) 231-255 |
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Crystal structure of magnesium-vermiculite |
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5.33 9.18 28.90 90 97 90 Cc |
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atom x y z occ |
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Mg1 0 0 0 .393 |
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Fe1 0 0 0 .080 |
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Al1 0 0 0 .027 |
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Mg2 0 .3330 0 .393 |
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Fe2 0 .3330 0 .080 |
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Al2 0 .3330 0 .027 |
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Mg3 0 .6670 0 .393 |
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Fe3 0 .6670 0 .080 |
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Al3 0 .6670 0 .027 |
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Si1 .397 0 .096 .680 |
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Al4 .397 0 .096 .320 |
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Si2 .397 .3330 .097 .680 |
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Al5 .397 .3330 .097 .320 |
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Mg4 .5 0 .25 .053 |
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Mg5 .5 .3330 .25 .053 |
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Mg6 .5 .6670 .25 .053 |
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O1 .358 0 .037 |
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O2 .358 .3330 .037 |
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O3 .358 .6670 .037 |
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O4 .147 .4040 .114 |
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O5 .147 .9290 .114 |
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O6 .434 .1670 .114 |
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OH7 .160 -.019 .213 |
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OH8 .160 .3520 .213 |
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OH9 .105 .6670 .213 |
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|
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Vermiculite |
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Haase D J, Weiss E J, Steinfink H |
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American Mineralogist 48 (1963) 261-270 |
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The crystal structure of a hexamethylene-diamine-vermiculite complex |
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5.33 9.18 17.12 90 97.0 90 C2 |
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atom x y z |
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Mg1 0 0 0 |
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Mg2 0 .333 0 |
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Mg3 0 .667 0 |
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Si1 .3967 .9920 .1607 |
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Si2 .3967 .3330 .1607 |
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Ob .3579 .9920 .0624 |
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Ob .3579 .3480 .0624 |
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Ob .3579 .6617 .0624 |
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O1 .4322 .1775 .1775 |
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O2 .1482 .4040 .1960 |
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O3 .1482 .9290 .1960 |
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N1 .3200 .1600 .3300 |
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C1 .1500 .1875 .3925 |
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C2 .1300 .3475 .4035 |
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C3 -.0400 .3750 .4690 |
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C4 -.0600 .5350 .4800 |
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C5 -.2300 .5625 .5455 |
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C6 .75 .7225 .5565 |
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N2 -.4200 .75 .6190 |
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|
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Vermiculite |
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Shirozu H, Bailey S W |
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American Mineralogist 51 (1966) 1124-1143 |
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Crystal structure of a two-layer Mg-vermiculite |
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5.349 9.255 28.89 90 97.12 90 C2/c |
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atom x y z occ Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) |
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Mg1 0 .1638 .25 .96 |
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Mg2 0 .4997 .25 .82 |
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Mg3 0 .8332 .25 .86 |
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Mg4 0 0 0 .41 2.30 |
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Si1 .1042 .9997 .1545 .715 1.23 |
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Al1 .1042 .9997 .1545 .285 1.23 |
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Si2 .1026 .6647 .1547 .715 .83 |
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Al2 .1026 .6647 .1547 .285 .83 |
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O1 .1424 .0039 .2132 .83 |
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O2 .1410 .6683 .2113 1.05 |
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O3 .3579 .0697 .1338 2.09 |
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O4 .3529 .5964 .1346 2.01 |
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O5 .5593 .3316 .1339 1.94 |
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OH .1420 .3380 .2129 1.21 |
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Wat1 .3363 .9736 .0397 .62 .0601 .0242 .0006 -.0024 .0036 -.0036 |
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Wat2 .3515 .3274 .0412 .62 .0768 .0226 .0007 -.0187 .0011 -.0037 |
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Wat3 .3832 .6520 .0414 .62 .0686 .0276 .0006 -.0181 .0067 -.0034 |
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|
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Vermiculite |
|
Kanamaru F, Vand V |
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American Mineralogist 55 (1970) 1550-1561 |
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The crystal structure of a clay-organic complex of 6-amino hexanoic acid and |
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vermiculite |
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5.33 9.18 17.45 90 97.0 90 C2 |
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atom x y z occ |
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Mg1 0 0 0 .79 |
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Fe1 0 0 0 .16 |
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Al1 0 0 0 .05 |
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Mg2 0 .333 0 .79 |
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Fe2 0 .333 0 .16 |
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Al2 0 .333 0 .05 |
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Mg3 0 .667 0 .79 |
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Fe3 0 .667 0 .16 |
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Al3 0 .667 0 .05 |
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Si1 .393 0 .160 .68 |
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Al1 .393 0 .160 .32 |
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Si2 .393 .333 .160 .68 |
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Al2 .393 .333 .160 .32 |
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O1 .352 0 .061 |
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O2 .352 .333 .061 |
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O3 .352 .667 .061 |
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O4 .136 .464 .189 |
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O5 .136 .929 .189 |
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O6 .412 .167 .218 |
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OH .715 .332 .330 |
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O .465 .298 .432 |
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C0 .600 .366 .392 |
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C1 .480 .505 .422 |
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C2 .595 .633 .383 |
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C3 .475 .763 .413 |
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C4 .590 .900 .375 |
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C5 .470 .038 .405 |
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N .585 .167 .367 |
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|
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| |
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