| Abstract: | Lithic-wacke inclusions within the alkali-ultramafic diatreme at Coyote Peak record a history of pronounced metasomatism and crystal growth. The dominant metasomatic changes were loss of Si from the inclusions and mass influx of K, due to an unusually high K activity in the ultramafic host. The reaction with K converted much of the clay, quartz and lithic fraction of the lithic wacke into microcline, and exchanged Na from abundant clastic albite. Probe analyses are tabulated for cores and rims of titanian acmites, augites and alkali amphiboles. -J.A.Z. |
| Genre: | Article |
| ProdID: | 70013104 |
| Citation Author: | Czamanske, And, S. , A. , Atkin, G. K. |
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| Citation End Page: | 516 |
| Citation Issue: | 5-6 |
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| Citation Language: | English |
| Citation Larger Work Title: | American Mineralogist |
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| Citation Number Of Pages: | 18 |
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| Citation Search Results Text: | Metasomatism, titanian acmite, and alkali amphiboles in lithic- wacke inclusions within the Coyote Peak diatreme, Humboldt County, California.; 1985; Article; Journal; American Mineralogist; Czamanske, And, S. , A. , Atkin, G. K. |
| Citation Start Page: | 499 |
| Citation Volume: | 70 |
| Citation Year: | 1985 |
| Type: | citation/reference |
| Text: | Metasomatism, titanian acmite, and alkali amphiboles in lithic- wacke inclusions within the Coyote Peak diatreme, Humboldt County, California.; 1985; Article; Journal; American Mineralogist; Czamanske, And, S. , A. , Atkin, G. K. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Tue, 1 Jan 1985 00:00 -0600 |
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