Nyerereite

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

Photomicrograph of a thin section of natrocarbonatite lava. Nyerereite occurs as the central, rectangular crystals and also the long acicular crystals in the groundmass. The rounded colorless crystals are gregoryite and the opaques are alabandite. Two crossed-polars photo also uploaded. Collection and photo, T. Peterson (lava collected by Charles Milton).

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Photo added: 23rd May 2007

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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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