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Nyerereite - Wikipedia, the free encyclopedia
Nyerereite has a chemical composition of Na 2 Ca(CO 3 ) 2 where the alkali element is clearly present, and has an important role when the magma reaches the surface. Nyrereite is orthorhombicpyr...
en.wikipedia.org/wiki/Nyerereite |
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Click Here for Larger Nyerereite Image in a New Browser Window Images: .... Print or Cut-and-Paste your Nyerereite Specimen Label here : ...
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Classification of Nyerereite ... Type Occurrence of Nyerereite ... Physical Properties of Nyerereite...
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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.
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Nyerereite Na2Ca(CO3)2; c 2001-2005 Mineral Data Publishing, version 1; Crystal Data: Orthorhombic, pseudohexagonal. Oldoinyo Lengai. J. Petrol., 36(4), 869–889. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means,
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Natrocarbonatite lavas erupted from hornitos T37B and T49B at Oldoinyo Lengai (Tanzania) during 23–30 July, 2000 are unusual in containing sylvite and fluorite microcrysts together with fluorite-nyerereite intergrowths.
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Compositions of nyerereite, barian nyerereite and gregoryite plotted in the system Na2CO3-K2CO3-CaCO3 (mol.%). Note that compositions of barian nyerereite ...
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Nyerereite and nahcolite have been identified as micro- and nano-inclusions in diamond from the Juina area, Brazil. Alongside them are Sr- and Ba-bearing ...
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Natrocarbonatite is composed mostly of two minerals, one of which is called nyerereite. You may recognize the name of Benjamin's boss, Gustave Nyerere, in that mineral's name. Nyerereite is named for the same man Chief Nyerere is - Julius Nyerere, the first president of Tanzania.
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Alkali carbonates nyerereite, ideally Na2Ca(CO3)2 and gregoryite, ideally Na2CO3, are the major minerals in natrocarbonatite lavas from Oldoinyo Lengai ...
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