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Meteoritic rutile: A niobium bearing mineral

Authors
Journal
Earth and Planetary Science Letters
0012-821X
Publisher
Elsevier
Publication Date
Volume
11
Identifiers
DOI: 10.1016/0012-821x(71)90194-4

Abstract

Abstract Quantitative electron microprobe analysis of rutile grains in several meteorites revealed the presence of variable Nb amounts. In iron meteorites rutile is enriched in niobium; the NbO 2 content varies between 1.63 and 2.93 wt %. In the Vaca Muerta mesosiderite rutile shows much lower NbO 2 contents varying between 0.04 and 0.38%. Tantalum was not detected in any of the analyzed rutiles. The present findings establish a Ti/Nb coherency and the strong lithophilic behavior of Nb in meteorites.

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