Ahrensite
	Yagi T, Marumo F, Akimoto S I
	American Mineralogist 59 (1974) 486-490
	Crystal structures of spinel polymorphs of Fe2SiO4 and Ni2SiO4
	Locality: synthetic
	_database_code_amcsd 0000404
	8.234 8.234 8.234 90 90 90 Fd3m
	atom x y z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
	Fe .625 .625 .625 .989 .0015 .0015 .0015 -.0001 -.0001 -.0001
	Si .625 .625 .625 .011 .0015 .0015 .0015 -.0001 -.0001 -.0001
	Fe 0 0 0 .023 .0010 .0010 .0010 0 0 0
	Si 0 0 0 .977 .0010 .0010 .0010 0 0 0
	O .3658 .3658 .3658 .0015 .0015 .0015 -.0001 -.0001 -.0001
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	Ahrensite
	Finger L W, Hazen R M, Yagi T
	American Mineralogist 64 (1979) 1002-1009
	Crystal structures and electron densities of nickel and iron silicate spinels at
	elevated temperature or pressure
	Locality: synthetic
	_database_code_amcsd 0000748
	8.236 8.236 8.236 90 90 90 *Fd3m
	.125 .125 .125
	atom x y z Biso
	Fe .5 .5 .5 0.40
	Si .125 .125 .125 0.27
	O .2409 .2409 .2409 0.41
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	Ahrensite
	Yamanaka T
	Physics and Chemistry of Minerals 13 (1986) 227-232
	Crystal structures of Ni2SiO4 and Fe2SiO4 as a function of
	temperature and heating duration
	Sample: T = 20 C
	Locality: synthetic
	_database_code_amcsd 0007404
	8.2374 8.2374 8.2374 90 90 90 Fd3m
	atom x y z B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
	Fe .625 .625 .625 .00121 .00121 .00121 -.00005 -.00005 -.00005
	Si 0 0 0 .00118 .00118 .00118 0 0 0
	O .3658 .3658 .3658 .00137 .00137 .00137 -.00005 -.00005 -.00005
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	Ahrensite
	Yamanaka T
	Physics and Chemistry of Minerals 13 (1986) 227-232
	Crystal structures of Ni2SiO4 and Fe2SiO4 as a function of
	temperature and heating duration
	Sample: T = 200 C
	Locality: synthetic
	_database_code_amcsd 0007405
	8.2513 8.2513 8.2513 90 90 90 Fd3m
	atom x y z B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
	Fe .625 .625 .625 .00402 .00402 .00402 -.00013 -.00013 -.00013
	Si 0 0 0 .00354 .00354 .00354 0 0 0
	O .3658 .3658 .3658 .00472 .00472 .00472 -.00010 -.00010 -.00010
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	Ahrensite
	Yamanaka T
	Physics and Chemistry of Minerals 13 (1986) 227-232
	Crystal structures of Ni2SiO4 and Fe2SiO4 as a function of
	temperature and heating duration
	Sample: T = 400 C
	Locality: synthetic
	_database_code_amcsd 0007406
	8.2644 8.2644 8.2644 90 90 90 Fd3m
	atom x y z B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
	Fe .625 .625 .625 .00529 .00529 .00529 -.00006 -.00006 -.00006
	Si 0 0 0 .00476 .00476 .00476 0 0 0
	O .3658 .3658 .3658 .00558 .00558 .00558 -.00011 -.00011 -.00011
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	Ahrensite
	Yamanaka T
	Physics and Chemistry of Minerals 13 (1986) 227-232
	Crystal structures of Ni2SiO4 and Fe2SiO4 as a function of
	temperature and heating duration
	Sample: T = 600 C
	Locality: synthetic
	_database_code_amcsd 0007407
	8.3114 8.3114 8.3114 90 90 90 Fd3m
	atom x y z B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
	Fe .625 .625 .625 .00687 .00687 .00687 -.00019 -.00019 -.00019
	Si 0 0 0 .00654 .00654 .00654 0 0 0
	O .3657 .3657 .3657 .00763 .00763 .00763 -.00087 -.00087 -.00087
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	Ahrensite
	Yamanaka T
	Physics and Chemistry of Minerals 13 (1986) 227-232
	Crystal structures of Ni2SiO4 and Fe2SiO4 as a function of
	temperature and heating duration
	Sample: T = 700 C
	Locality: synthetic
	_database_code_amcsd 0007408
	8.3398 8.3398 8.3398 90 90 90 Fd3m
	atom x y z B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
	Fe .625 .625 .625 .00712 .00712 .00712 -.00068 -.00068 -.00068
	Si 0 0 0 .00760 .00760 .00760 0 0 0
	O .3654 .3654 .3654 .00854 .00854 .00854 -.00102 -.00102 -.00102
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	Ahrensite
	Yamanaka T, Shimazu H, Ota K
	Physics and Chemistry of Minerals 28 (2001) 110-118
	Electric conductivity of Fe2SiO4-Fe3O4 spinel solid solutions
	Sample: Fe(3-x)SixO4, x = 1.000, synthesized at 1200 C, 10 GPa
	Locality: synthetic
	_database_code_amcsd 0008507
	8.2374 8.2374 8.2374 90 90 90 Fd3m
	atom x y z occ
	FeO .625 .625 .625 .987
	SiO .625 .625 .625 .013
	FeT 0 0 0 .026
	SiT 0 0 0 .974
	O .3656 .3656 .3656
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	Ahrensite
	Ma C, Tschauner O, Beckett J R, Liu Y, Rossman G R, Sinogeikin S V, Smith J S, Taylor L A
	Geochimica et Cosmochimica Acta 184 (2016) 240-256
	Ahrensite, gamma-Fe2SiO4, a new shock-metamorphic mineral from the Tissint meteorite:
	Implications for the Tissint shock event on Mars
	Locality: Tissint meteorite
	_database_code_amcsd 0021229
	8.1629 8.1629 8.1629 90 90 90 *Fd3m
	.125 .125 .125
	atom x y z occ Biso
	Fe .5 .5 .5 .56 .55
	Mg .5 .5 .5 .43 .55
	Si .5 .5 .5 .03 .55
	Si .125 .125 .125 .98 .23
	Fe .125 .125 .125 .03 .23
	O .748 .748 .748 .25
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