Almandine, Oligoclase (Var: Oligoclase-Albite)

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Locality: Steli Feldspar Quarry, Tveit, Iveland, Aust-Agder, Norway

Almandine crystals with plagioclase feldspar. Almandine garnets are abundant at the location, both as bands in feldspar, and with muscovite mica. The specimen is 12 x 13 cm, and the largest crystal is just over 2 cm in diameter.

The garnets from the primary pegmatites in the general Evje/Iveland area are all of intermediate composition between almandine and spessartine, often with some Y2O3.Most of then have Mn>Fe and can be called spessartine. At the Steli quarry the almandine component has been dominant in the analysed samples.

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Photo added: 31st Mar 2009

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Current server date and time: 15th Feb 2012 18:16:26