Crystallography Open Database

Information card for entry 9016764

Preview

Coordinates	9016764.cif
External links	AMCSD

Structure parameters

Mineral name	Anorthite
Formula	Al2 Ca O8 Si2
Calculated formula	Al2 Ca O8 Si2
Title of publication	High-pressure structure of anorthite Sample: P = 1 bar
Authors of publication	Angel, R. J.
Journal of publication	American Mineralogist
Year of publication	1988
Journal volume	73
Pages of publication	1114 - 1119
a	8.175 Å
b	12.873 Å
c	14.17 Å
α	93.11°
β	115.89°
γ	91.28°
Cell volume	1337.8 Å³
Ambient diffracton pressure	100 kPa
Number of distinct elements	4
Space group number	2
Hermann-Mauguin space group symbol	I -1
Hall space group symbol	-I 1
Has coordinates	Yes
Has disorder	No
Has F_obs	No

Version history

Revision	Date	Message	Files
293639 (current)	2024-08-02	Corrected summary formula for new submissions of anorthite.	9016764.cif
283960	2023-05-23	cif/9/ (saulius@tasmanijos-velnias) Estimating atom types and attached hydrogen counts for all range 9 COD entries. Atom types and hydrogen counts for about 170 entries were adjusted manually after running 'cif_guess_AMCSD_atom_types'. Commiting only those entries where declared and calculated summary formulae are matching exactly. To get the reduced formula, the Z value was estimated with 'cif_estimate_Z' after atom type adjustment. NB.: some files still do not contain the Z value, since the Z that was written into the files was estimated before the atom type correction was made, not after. The Z values will be recomputed once more after the atom types are checked in.	9016764.cif
282074	2023-03-27	cod/ (saulius@kukutis) Syncronising the AMCSD and the COD: depositing those AMCSD files that are genuinely new (i.e. do not have corresponding COD entries when compared using DOI, atomic coordinates, cell parameters and symmetry).	9016764.cif