Glauconite from the precambrian belt series, Montana

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Glauconite from the upper part of the Missoula Group of the Belt Series, Flathead County, Montana, has been dated at 1070 million years by potassium-argon and rubidium-strontium analyses. This is the first glauconite of Precambrian age reported in North America.
Publication type Article
Publication Subtype Journal Article
Title Glauconite from the precambrian belt series, Montana
Series title Science
Volume 140
Issue 3565
Year Published 1963
Language English
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Science
First page 390
Last page 391
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