Phonolite from France (Roche Sanadoire, Auvergne) thin section.
| Oxyhornblende, amphiboles and feldspar. Some feldspathoid crystals and biotite have also been found.
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| Plane polarized view |
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Phonolite from France (Roche Sanadoire, Auvergne) thin section. |
| Oxyhornblende, amphiboles and feldspar. Some feldspathoid crystals and biotite have also been found.
|
|
|
| Plane polarized view |
|
|