Combeite, Nepheline, Aegirine, Sodalite

Locality: Mt. Oldoinyo Lengai (Ol Doinyo Lengai), Arusha Region, Tanzania

Combeite (large colorless with inclusions), aegirine (green, acicular), nepheline (colorless, rectangular), and sodalite (colorless modified cubes, below largest combeite). Sample collected by Hans Eugster; sample in possession of T. Peterson. Plane polarized light: see accompanying photo with crossed polars.

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Photo added: 9th Jan 2006

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Copyright © Jolyon Ralph and Ida Chau 1993-2012. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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