MODEL PYROXENES I: IDEAL PYROXENE TOPOLOGIES
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dc.contributor.author | Thompson R.M. | |
dc.contributor.author | Downs R.T. | |
dc.date.accessioned | 2022-01-02T07:44:04Z | |
dc.date.available | 2022-01-02T07:44:04Z | |
dc.date.issued | 2003 | |
dc.identifier | https://www.elibrary.ru/item.asp?id=7597049 | |
dc.identifier.citation | American Mineralogist, 2003, 88, 4, 653 | |
dc.identifier.issn | 0003-004X | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/34088 | |
dc.description.abstract | Ideal pyroxenes are hypothetical structures based on ideal closest-packed arrangements of O anions. They are modeled after observed pyroxene structures and have the general formula M2M1T2O6, where M2 and M1 represent octahedrally coordinated cations, and T represents tetrahedrally coordinated cations. An algorithm has been created to construct all possible ideal pyroxenes based on closest-packed stacking sequences of length 12 or less. These structures are reported. The only significant structural parameters that vary between different ideal pyroxenes are the M1-T and M2-T distances. We show that the repulsive forces between these pairs of cations distinguishes the energetics of the ideal pyroxenes and may be important in determining the topologies of observed pyroxenes. | |
dc.subject | MINERALOGY | |
dc.subject | ALGORITHMS | |
dc.subject | CRYSTALS | |
dc.subject | HYPOTHESES | |
dc.subject | pyroxenes | |
dc.title | MODEL PYROXENES I: IDEAL PYROXENE TOPOLOGIES | |
dc.type | Статья |
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