{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["68(Pt 2)"],"submitter":["Posner ES"],"pubmed_abstract":["The title compound, (sodium magnesium) [magnesium iron(III) silicon] disilicate, (Na(0.97)Mg(0.03))(Mg(0.43)Fe(0.17) (3+)Si(0.40))Si(2)O(6), is isotypic with ordered P2/n omphacite. Its structure is characterized by single chains of corner-sharing SiO(4) tetra-hedra, extending along the c axis, which are crosslinked by bands of edge-sharing octa-hedra (site symmetry 2), statistically occupied by (Mg(2+) + Fe(3+) + Si(4+)). Between the bands built up of the octahedra are two non-equivalent highly distorted six-coordinated sites (site symmetry 2), statistically occupied by (Na + Mg). In contrast to omphacites, the great differences in size and charge between Mg(2+) and Si(4+) result in complete, rather than partial, ordering of Mg and Si into two distinct octa-hedral sites, whereas Fe(3+) is"],"journal":["Acta crystallographica. Section E, Structure reports online"],"pagination":["i18"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC3274841"],"repository":["biostudies-literature"],"pubmed_title":["High-pressure synthetic (Na(0.97)Mg(0.03))(Mg(0.43)Fe(0.17)Si(0.40))Si(2)O(6), with six-coordinated silicon, isostructural with P2/n omphacite."],"pmcid":["PMC3274841"],"pubmed_authors":["Yang H","Downs RT","Posner ES","Konzett J","Frost DJ"],"additional_accession":[]},"is_claimable":false,"name":"High-pressure synthetic (Na(0.97)Mg(0.03))(Mg(0.43)Fe(0.17)Si(0.40))Si(2)O(6), with six-coordinated silicon, isostructural with P2/n omphacite.","description":"The title compound, (sodium magnesium) [magnesium iron(III) silicon] disilicate, (Na(0.97)Mg(0.03))(Mg(0.43)Fe(0.17) (3+)Si(0.40))Si(2)O(6), is isotypic with ordered P2/n omphacite. Its structure is characterized by single chains of corner-sharing SiO(4) tetra-hedra, extending along the c axis, which are crosslinked by bands of edge-sharing octa-hedra (site symmetry 2), statistically occupied by (Mg(2+) + Fe(3+) + Si(4+)). Between the bands built up of the octahedra are two non-equivalent highly distorted six-coordinated sites (site symmetry 2), statistically occupied by (Na + Mg). In contrast to omphacites, the great differences in size and charge between Mg(2+) and Si(4+) result in complete, rather than partial, ordering of Mg and Si into two distinct octa-hedral sites, whereas Fe(3+) is","dates":{"release":"2012-01-01T00:00:00Z","publication":"2012 Feb","modification":"2025-04-18T19:18:36.876Z","creation":"2019-03-26T23:59:37Z"},"accession":"S-EPMC3274841","cross_references":{"pubmed":["22346794"],"doi":["10.1107/S1600536812002966"]}}