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| | MYRMEKITE 44 of 50 |
 | | In the Papoose Flat pluton in the Inyo Mountains of California the orthoclase megacrysts are suggested to form by K-metasomatism because microfracturing of a few normally zoned plagioclase crystals channeled introduced K-bearing fluids to these places, thereby promoting K-metasomatism and localized growth to form the megacrysts. |
 | | Moreover, the K-feldspar crystals in the terranes in California and Connecticut, in which Simpson and Wintsch (1989) assumed that the K-feldspar crystals were primary, have been restudied, and the K-feldspar crystals are actually secondary K-replacements of primary plagioclase in deformed rocks (Collins, 1997f, 1997g). |
 | | California, genesis and exploration implications; in Coyner, A. R., and Fahey, P. L., eds., Geology and Ore Deposits of the American Cordilleran: Geological Society of Nevada Symposium Proceedings, Reno/Sparks, Nevada, April 1995, p. |
| www.csun.edu /~vcgeo005/Papoose.htm (9284 words) |
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