The crystal structure of Mg end-member lizardite-1<i>T</i> forming polyhedral spheres from the Lizard, Cornwall
書誌事項
- 公開日
- 2010-04
- 権利情報
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- https://www.cambridge.org/core/terms
- DOI
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- 10.1180/minmag.2010.074.2.277
- 公開者
- Mineralogical Society
この論文をさがす
説明
<jats:title>Abstract</jats:title><jats:p>The crystal structure of lizardite-1<jats:italic>T</jats:italic> from Gew-graze, Cornwall, has been refined by single-crystal X-ray diffraction to <jats:italic>R</jats:italic><jats:sub>1</jats:sub> of 0.0263 and 0.0557, for two crystals having <jats:italic>P</jats:italic>31<jats:italic>m</jats:italic> space group and lattice parameters <jats:italic>a</jats:italic> = 5.2905(5) Å, <jats:italic>c</jats:italic> = 7.2815(8) Å, and <jats:italic>a</jats:italic> = 5.3111(10) Å, <jats:italic>c</jats:italic> = 7.2907(15) Å, respectively. The Gew-graze lizardite is very close to the end-member composition, so these refinements confirm the existence of well crystallized pure Mg-lizardite and show this to be the most weakly H-bonded lizardite ever refined. With regard to its lattice parameters, Si–O bond distances and geometrical parameters controlled by interlayer interactions (i.e. H-bonding), the Gew-graze Mg end-member lizardite yields slight but observable geometrical differences compared with previous refined structures for specifically, aluminous, lizardites.</jats:p>
収録刊行物
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- Mineralogical Magazine
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Mineralogical Magazine 74 (2), 277-284, 2010-04
Mineralogical Society
