Phonolite from the Boca de Tauce, Tenerife.
Feldspar |
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| Reflected light image of a large feldspar crystal (10). |
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| Raman spectra of feldspar (seems to be anorthoclase) from this phonolithe section. |
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| Mixed spectrum of feldspar and aenigmatite from spot
6 on page 1, first picture.
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Richterite |
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| The dark mineral visible in thin section plane polarized light which is believed to be Richterite, a calcium sodium amphibole. It is mixed with the feldspar. |
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| Reflection image of richterite (17). |
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| Raman spectrum of Richterite (17) compared to the reference in RRUFF database. The spectrum of spot 17 has additional peaks and is thus not a pure Richterite crystal, it is mixed with feldspar as shown by the red spectrum from pure feldspar. |