Contributions to mineral chemistry of Hawaiian rocks |
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| Authors: | T E Bunch Klaus Keil |
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| Institution: | (1) Space Science Division, Ames Research Center, NASA, 94035 Moffett Field, California, USA;(2) Department of Geology, Institute of Meteoritics, University of New Mexico, 87106 Albuquerque, New Mexico, USA |
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| Abstract: | Small gabbroic dikes of high TiO2 content transect massive hawaiite in the Kaena Quarry, Waianae Range, Oahu. One dike studied consists of two rock types: (a) border zone alkali gabbro of high titanomagnetite and titanaugite content and, (b) interior mugearite that contains iron-rich pyroxenes and K-feldspar. The dike probably formed as an in situ latestage segregation enriched in TiO2, SiO2, and alkalis. |
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