Kosmochlor
Cameron M, Sueno S, Prewitt C T, Papike J J
American Mineralogist 58 (1973) 594-618
High-temperature crystal chemistry of acmite, diopside, hedenbergite, jadeite,
spodumene, and ureyite
T = 24 C
pyroxene
_database_code_amcsd 0000359
9.579 8.722 5.267 90 107.37 90 C2/c
atom x y z B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Si .2921 .0918 .2333 .00142 .00131 .00147 -.00010 .00020 -.00016
Cr1 0 .9076 1/4 .00167 .00146 .00229 0 .00043 0
Na2 0 .3008 1/4 .00350 .00166 .00344 0 -.00119 0
O1 .1140 .0791 .1374 .00156 .00177 .00186 -.00013 .00029 .00040
O2 .3599 .2583 .3037 .00221 .00152 .00377 -.00064 .00041 -.00038
O3 .3531 .0105 .0066 .00176 .00240 .00243 -.00001 .00035 -.00116
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Kosmochlor
Cameron M, Sueno S, Prewitt C T, Papike J J
American Mineralogist 58 (1973) 594-618
High-temperature crystal chemistry of acmite, diopside, hedenbergite, jadeite,
spodumene, and ureyite
T = 400 C
pyroxene
_database_code_amcsd 0000360
9.597 8.751 5.274 90 107.29 90 C2/c
atom x y z B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Si .2920 .0918 .2328 .00178 .00180 .01221 -.00020 .00204 -.00015
Cr1 0 .9072 1/4 .00194 .00195 .01226 0 .00196 0
Na2 0 .3001 1/4 .00719 .00335 .01819 0 -.00035 0
O1 .1139 .0794 .1369 .00223 .00311 .01507 -.00033 .00278 .00010
O2 .3607 .2571 .3012 .00352 .00214 .02085 -.00134 .00268 -.00220
O3 .3521 .0099 .0062 .00324 .00377 .01578 .00037 .00280 -.00084
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Kosmochlor
Cameron M, Sueno S, Prewitt C T, Papike J J
American Mineralogist 58 (1973) 594-618
High-temperature crystal chemistry of acmite, diopside, hedenbergite, jadeite,
spodumene, and ureyite
T = 600 C
pyroxene
_database_code_amcsd 0000361
9.612 8.77 5.279 90 107.25 90 C2/c
atom x y z B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Si .2921 .0912 .2324 .00213 .00255 .01040 -.00025 .00207 -.00014
Cr1 0 .9066 1/4 .00235 .00213 .01103 0 .00181 0
Na2 0 .3010 1/4 .00938 .00427 .02176 0 -.00089 0
O1 .1140 .0782 .1362 .00183 .00386 .01103 -.00032 .00255 .00066
O2 .3611 .2573 .3025 .00447 .00256 .02080 -.00161 .00372 -.00094
O3 .3519 .0094 .0074 .00308 .00447 .01486 -.00027 .00234 -.00287
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Kosmochlor
Secco L, Martignago F, Dal Negro A, Reznitskii L Z, Sklyarov E V
American Mineralogist 87 (2002) 709-714
Crystal chemistry of Cr-V-rich clinopyroxenes
Sample 1
_database_code_amcsd 0002806
9.6072 8.7413 5.2771 90 107.172 90 C2/c
atom x y z occ Uiso
SiT .29165 .09132 .23581 .00406
CrM1 0 .90618 .25 .478 .00453
VM1 0 .90618 .25 .428 .00453
MgM1 0 .90618 .25 .056 .00453
AlM1 0 .90618 .25 .033 .00453
TiM1 0 .90618 .25 .003 .00453
FeM1 0 .90618 .25 .001 .00453
MnM1 0 .90618 .25 .001 .00453
CaM2 0 .30078 .25 .055 .01105
NaM2 0 .30078 .25 .945 .01105
O1 .11430 .07965 .13983 .00598
O2 .36076 .25718 .30565 .00766
O3 .35267 .01016 .00964 .00688
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Kosmochlor
Origlieri M J, Downs R T, Thompson R M, Pommier C J S, Denton M B, Harlow G E
American Mineralogist 88 (2003) 1025-1032
High-pressure crystal structure of kosmochlor, NaCrSi2O6, and systematics of
anisotropic compression in pyroxenes
Sample: P = 0.0001 GPa
Note: altered y-coordinate of O2
_database_code_amcsd 0003133
9.5720 8.7094 5.2678 90 107.498 90 C2/c
atom x y z Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Na2 0 .2999 .25 1.55 .0051 .0045 .0122 0 -.0005 0
Cr1 0 .90769 .25 .91 .00277 .0030 .0078 0 .0005 0
Si .29259 .0918 .2343 .92 .0028 .0031 .0081 .0000 .0008 .0000
O1 .1137 .0784 .1366 1.01 .0027 .0038 .0081 -.0002 .0004 .0004
O2 .3605 .2589 .3033 1.25 .0038 .0039 .0123 -.0005 .0014 -.0001
O3 .3529 .0095 .0092 1.14 .0035 .0040 .0097 .0006 .0014 -.0002
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Kosmochlor
Origlieri M J, Downs R T, Thompson R M, Pommier C J S, Denton M B, Harlow G E
American Mineralogist 88 (2003) 1025-1032
High-pressure crystal structure of kosmochlor, NaCrSi2O6, and systematics of
anisotropic compression in pyroxenes
Sample: P = 1.14 GPa
_database_code_amcsd 0003134
9.5439 8.6831 5.2517 90 107.441 90 C2/c
atom x y z Biso
Na2 0 .3006 .25 1.80
Cr1 0 .9082 .25 1.23
Si .2925 .0921 .2342 1.29
O1 .1144 .0798 .138 1.34
O2 .3614 .2583 .306 1.4
O3 .3527 .0109 .007 1.45
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Kosmochlor
Origlieri M J, Downs R T, Thompson R M, Pommier C J S, Denton M B, Harlow G E
American Mineralogist 88 (2003) 1025-1032
High-pressure crystal structure of kosmochlor, NaCrSi2O6, and systematics of
anisotropic compression in pyroxenes
Sample: P = 2.22 GPa
_database_code_amcsd 0003135
9.5173 8.6605 5.2374 90 107.349 90 C2/c
atom x y z Biso
Na2 0 .3005 .25 1.5
Cr1 0 .9079 .25 .78
Si .2927 .0922 .2344 .92
O1 .1149 .0793 .136 1.0
O2 .3606 .2585 .307 1.1
O3 .3548 .0114 .008 1.1
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Kosmochlor
Origlieri M J, Downs R T, Thompson R M, Pommier C J S, Denton M B, Harlow G E
American Mineralogist 88 (2003) 1025-1032
High-pressure crystal structure of kosmochlor, NaCrSi2O6, and systematics of
anisotropic compression in pyroxenes
Sample: P = 3.53 GPa
_database_code_amcsd 0003136
9.4867 8.6323 5.2206 90 107.221 90 C2/c
atom x y z Biso
Na2 0 .3020 .25 1.4
Cr1 0 .9084 .25 .93
Si .2928 .0922 .2347 .93
O1 .1146 .0802 .140 1.2
O2 .3604 .2605 .308 1.2
O3 .3535 .0142 .008 0.9
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Kosmochlor
Origlieri M J, Downs R T, Thompson R M, Pommier C J S, Denton M B, Harlow G E
American Mineralogist 88 (2003) 1025-1032
High-pressure crystal structure of kosmochlor, NaCrSi2O6, and systematics of
anisotropic compression in pyroxenes
Sample: P = 5.05 GPa
_database_code_amcsd 0003137
9.4562 8.5997 5.2016 90 107.104 90 C2/c
atom x y z Biso
Na2 0 .3031 .25 1.5
Cr1 0 .9088 .25 .78
Si .2924 .0936 .2343 .95
O1 .116 .0799 .139 0.9
O2 .360 .2611 .310 1.0
O3 .359 .0131 .005 1.0
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Kosmochlor
Origlieri M J, Downs R T, Thompson R M, Pommier C J S, Denton M B, Harlow G E
American Mineralogist 88 (2003) 1025-1032
High-pressure crystal structure of kosmochlor, NaCrSi2O6, and systematics of
anisotropic compression in pyroxenes
Sample: P = 5.78 GPa
_database_code_amcsd 0003138
9.4350 8.5780 5.1894 90 107.030 90 C2/c
atom x y z Biso
Na2 0 .303 .25 1.2
Cr1 0 .9091 .25 .76
Si .2926 .0934 .2344 .64
O1 .114 .082 .137 0.8
O2 .362 .261 .314 0.8
O3 .353 .0162 .004 0.8
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Kosmochlor
Origlieri M J, Downs R T, Thompson R M, Pommier C J S, Denton M B, Harlow G E
American Mineralogist 88 (2003) 1025-1032
High-pressure crystal structure of kosmochlor, NaCrSi2O6, and systematics of
anisotropic compression in pyroxenes
Sample: P = 6.25 GPa
_database_code_amcsd 0003139
9.4295 8.5700 5.1844 90 106.999 90 C2/c
atom x y z Biso
Na2 0 .3034 .25 1.3
Cr1 0 .9087 .25 .80
Si .2929 .0935 .2343 .86
O1 .115 .0805 .138 0.8
O2 .362 .2622 .313 1.1
O3 .354 .0150 .002 0.9
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Kosmochlor
Origlieri M J, Downs R T, Thompson R M, Pommier C J S, Denton M B, Harlow G E
American Mineralogist 88 (2003) 1025-1032
High-pressure crystal structure of kosmochlor, NaCrSi2O6, and systematics of
anisotropic compression in pyroxenes
Sample: P = 7.08 GPa
_database_code_amcsd 0003140
9.4110 8.5517 5.1729 90 106.910 90 C2/c
atom x y z Biso
Na2 0 .3058 .25 1.3
Cr1 0 .9088 .25 .84
Si .2927 .0936 .2355 .95
O1 .116 .0813 .140 0.8
O2 .362 .2627 .313 1.2
O3 .358 .0172 .002 1.07
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Kosmochlor
Origlieri M J, Downs R T, Thompson R M, Pommier C J S, Denton M B, Harlow G E
American Mineralogist 88 (2003) 1025-1032
High-pressure crystal structure of kosmochlor, NaCrSi2O6, and systematics of
anisotropic compression in pyroxenes
Sample: P = 7.23 GPa
_database_code_amcsd 0003141
9.4105 8.5481 5.1727 90 106.915 90 C2/c
atom x y z Biso
Na2 0 .3025 .25 1.2
Cr1 0 .9086 .25 .69
Si .2929 .0933 .2348 .70
O1 .1148 .0820 .141 0.8
O2 .3588 .2624 .312 0.8
O3 .3570 .0161 .003 0.9
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Kosmochlor
Origlieri M J, Downs R T, Thompson R M, Pommier C J S, Denton M B, Harlow G E
American Mineralogist 88 (2003) 1025-1032
High-pressure crystal structure of kosmochlor, NaCrSi2O6, and systematics of
anisotropic compression in pyroxenes
Sample: P = 7.39 GPa
_database_code_amcsd 0003142
9.4059 8.5472 5.1703 90 106.892 90 C2/c
atom x y z Biso
Na2 0 .3053 .25 1.3
Cr1 0 .9089 .25 .77
Si .2933 .0934 .2356 .79
O1 .116 .0812 .139 0.9
O2 .358 .2637 .311 1.0
O3 .358 .0165 .002 0.9
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Kosmochlor
Origlieri M J, Downs R T, Thompson R M, Pommier C J S, Denton M B, Harlow G E
American Mineralogist 88 (2003) 1025-1032
High-pressure crystal structure of kosmochlor, NaCrSi2O6, and systematics of
anisotropic compression in pyroxenes
Sample: P = 8.50 GPa
_database_code_amcsd 0003143
9.3836 8.5201 5.1560 90 106.776 90 C2/c
atom x y z Biso
Na2 0 .303 .25 1.2
Cr1 0 .9092 .25 .74
Si .2936 .0932 .2352 .77
O1 .1136 .079 .138 0.8
O2 .360 .264 .313 1.0
O3 .355 .017 .002 0.7
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Kosmochlor
Origlieri M J, Downs R T, Thompson R M, Pommier C J S, Denton M B, Harlow G E
American Mineralogist 88 (2003) 1025-1032
High-pressure crystal structure of kosmochlor, NaCrSi2O6, and systematics of
anisotropic compression in pyroxenes
Sample: P = 8.97 GPa
_database_code_amcsd 0003144
9.3742 8.5086 5.1484 90 106.721 90 C2/c
atom x y z Biso
Na2 0 .304 .25 1.4
Cr1 0 .9096 .25 .83
Si .2936 .0938 .2350 .75
O1 .1142 .080 .139 0.8
O2 .359 .264 .314 1.1
O3 .357 .018 .004 0.8
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Kosmochlor
Origlieri M J, Downs R T, Thompson R M, Pommier C J S, Denton M B, Harlow G E
American Mineralogist 88 (2003) 1025-1032
High-pressure crystal structure of kosmochlor, NaCrSi2O6, and systematics of
anisotropic compression in pyroxenes
Sample: P = 9.28 GPa
_database_code_amcsd 0003145
9.3694 8.5028 5.1456 90 106.717 90 C2/c
atom x y z Biso
Na2 0 .3044 .25 1.2
Cr1 0 .9094 .25 .70
Si .2935 .0933 .2363 .72
O1 .1142 .081 .138 0.7
O2 .3585 .264 .314 0.9
O3 .3560 .0184 .000 0.7
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Kosmochlor
Posner E S, Dera P, Downs R T, Lazarz J D, Irmen P
Physics and Chemistry of Minerals 41 (2014) 695-707
High-pressure single-crystal X-ray diffraction study of jadeite and kosmochlor
Note: P = 2.1 GPa
Locality: synthetic
_database_code_amcsd 0020188
9.524 8.672 5.2411 90 107.36 90 C2/c
atom x y z Uiso
NaM2 0 .3018 .25 .014
CrM1 0 .0921 .75 .005
Si .2925 .0921 .2342 .007
O1 .1145 .0793 .1374 .008
O2 .3595 .2596 .3065 .010
O3 .1457 .4890 -.0075 .008
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Kosmochlor
Posner E S, Dera P, Downs R T, Lazarz J D, Irmen P
Physics and Chemistry of Minerals 41 (2014) 695-707
High-pressure single-crystal X-ray diffraction study of jadeite and kosmochlor
Note: P = 18.5 GPa
Locality: synthetic
_database_code_amcsd 0020189
9.197 8.327 5.0572 90 106.23 90 C2/c
atom x y z Uiso
NaM2 0 .3098 .25 .009
CrM1 0 .0888 .75 .005
Si .2944 .0953 .2368 .006
O1 .1146 .0852 .1390 .006
O2 .3588 .2674 .3276 .008
O3 .1378 .4745 .0043 .007
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Kosmochlor
Posner E S, Dera P, Downs R T, Lazarz J D, Irmen P
Physics and Chemistry of Minerals 41 (2014) 695-707
High-pressure single-crystal X-ray diffraction study of jadeite and kosmochlor
Note: P = 31.3 GPa
Locality: synthetic
_database_code_amcsd 0020190
9.084 8.077 4.9544 90 105.70 90 C2/c
atom x y z Uiso
NaM2 0 .3128 .25 .011
CrM1 0 .0876 .75 .005
Si .2940 .0973 .2412 .006
O1 .1120 .0903 .1380 .009
O2 .3578 .2710 .3417 .010
O3 .1368 .4653 .0057 .008
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Kosmochlor
Posner E S, Dera P, Downs R T, Lazarz J D, Irmen P
Physics and Chemistry of Minerals 41 (2014) 695-707
High-pressure single-crystal X-ray diffraction study of jadeite and kosmochlor
Note: P = 35.3 GPa
Locality: synthetic
_database_code_amcsd 0020191
9.076 7.971 4.9309 90 105.56 90 C2/c
atom x y z Uiso
NaM2 0 .3125 .25 .008
CrM1 0 .0873 .75 .006
Si .2943 .0976 .2437 .008
O1 .1130 .0909 .1373 .006
O2 .3556 .2734 .3447 .010
O3 .1364 .4648 .0049 .008
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Kosmochlor
Posner E S, Dera P, Downs R T, Lazarz J D, Irmen P
Physics and Chemistry of Minerals 41 (2014) 695-707
High-pressure single-crystal X-ray diffraction study of jadeite and kosmochlor
Note: P = 40.2 GPa
Locality: synthetic
_database_code_amcsd 0020192
9.011 7.918 4.8955 90 105.10 90 C2/c
atom x y z Uiso
NaM2 0 .3164 .25 .007
CrM1 0 .0859 .75 .007
Si .2938 .0978 .2459 .005
O1 .1125 .0931 .1380 .006
O2 .3535 .2760 .3468 .010
O3 .1394 .4663 .0068 .009
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