Re-investigation of clino-ferrosilite from Lake Naivasha, Kenya.
The clino-ferrosilite from the lithophysae in an obsidian fl'om Lake Naivasha, Kenya, originally examined by Bowen (1935), has been shown to be substantially pure FeSiO3, with about 5 % MnSiO3 in solid solution. It has the same space-group, P21/c , as clino-enstatite and pigeonite. The unit-cell dimensions are a = 9.718 A, b = 9.088 A, c = 5.239 A, ~b = 108~'27'. These do not conform to the scheme proposed by Brown (1960): reasons are given why this was not unexpected.
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| Format: | Journal Contribution biblioteca |
| Language: | English |
| Published: |
1965
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| Subjects: | Iron compounds, Lithology, Petrology, |
| Online Access: | http://hdl.handle.net/1834/6917 |
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