File:Biotite and muscovite.jpg
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Summary
| Description |
Polarizing microscope picture of thin section taken in crossed polarized light. The green mineral is biotite and the coloured one is muscovite. The black inclusion in biotite is magnetite. Rock:Nepheline syenite gneiss Local:Rio de Janeiro, Brazil Author:Eurico Zimbres Free for all use Date: 1990 |
| Date | 10 March 2006 (original upload date) |
| Source | No machine-readable source provided. Own work assumed (based on copyright claims). |
| Author | No machine-readable author provided. Zimbres assumed (based on copyright claims). |
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 00:23, 10 March 2006 | | 668 × 674 (291 KB) | Zimbres | == Summary == Polarizing microscope picture of thin section taken in crossed polarized light. The green mineral is biotite and the coloured one is muscovite. The black inclusion in biotite is magnetite. Rock:Nepheline syenite gneiss Local:Rio de Janeiro |
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