| Abstract: | Seven glauconite samples from the Magmont area yield a 359 + or - 22 m.y. Rb-Sr isochron. The Rb/Sr ratios for these seven samples are significantly lower than the ratios for glauconite samples from distant, unmineralized sites. The glauconites from Magmont are postulated to have been affected by the same thermochemical event(s) that produced the SE Missouri ore deposits, and therefore to date that mineralization.-G.J.N. |
| Genre: | Article |
| ProdID: | 70013118 |
| Citation Author: | Stein, H. J.; Kish, S. A. |
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| Citation End Page: | 753 |
| Citation Issue: | 3 |
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| Citation Language: | English |
| Citation Larger Work Title: | Economic Geology |
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| Citation Number Of Pages: | 15 |
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| Citation Search Results Text: | The timing of ore formation in southeast Missouri: Rb-Sr glauconite dating at the Magmont mine, Viburnum trend.; 1985; Article; Journal; Economic Geology; Stein, H. J.; Kish, S. A. |
| Citation Start Page: | 739 |
| Citation Volume: | 80 |
| Citation Year: | 1985 |
| Type: | citation/reference |
| Text: | The timing of ore formation in southeast Missouri: Rb-Sr glauconite dating at the Magmont mine, Viburnum trend.; 1985; Article; Journal; Economic Geology; Stein, H. J.; Kish, S. A. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Tue, 1 Jan 1985 00:00 -0600 |
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