Beta-diopside
	Plonka A M, Dera P, Irmen P, Rivers M L, Ehm L, Parise J B
	Geophysical Research Letters 39 (2012) L24307
	Beta-diopside, a new ultrahigh-pressure polymorph of
	CaMgSi2O6 with six-coordinated silicon
	Note: P = 56.1 GPa
	Locality: synthesize from natural sample
	_database_code_amcsd 0020131
	9.053 7.677 4.751 90 96.34 90 P2_1/c
	atom x y z Uiso
	Ca(1) .7393 .0675 .0901 .006
	Mg(1) .2420 .1641 .4032 .003
	Si(1) .5108 .1660 .4627 .006
	Si(2) .0316 .8543 .2634 .008
	O(1) .3937 .1693 .1129 .005
	O(2) .3913 .4831 .0857 .004
	O(3) .6154 .2932 .2673 .004
	O(4) .1425 .3516 .2168 .005
	O(5) .1056 .0289 .1983 .009
	O(6) .1082 .7090 .0695 .007
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