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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Science / Faculty of Science >
Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and mineralogy >
Vol.XX, No.1 >
Ti- and Al-rich Clinopyroxenes from the Dolerite Dike in the Meguro Area of the Hidaka Metamorphic Belt, Hokkaido
| Title: | Ti- and Al-rich Clinopyroxenes from the Dolerite Dike in the Meguro Area of the Hidaka Metamorphic Belt, Hokkaido |
| Authors: | Maeda, Jin'ichiro Browse this author |
| Issue Date: | Mar-1981 |
| Publisher: | 北海道大学 |
| Journal Title: | 北海道大学理学部紀要 |
| Journal Title(alt): | Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and mineralogy |
| Volume: | 20 |
| Issue: | 1 |
| Start Page: | 79 |
| End Page: | 86 |
| Abstract: | A Ti- and Al-rich clinopyroxene (augite-salite) is described from the dolerite dike in the southern part of the Main zone of the Hidaka metamorphic belt. Maximum contents of TiO2 and Al2O3 attain up to 3.5 percent and 8.1 percent, respectively. An increase in Ti, Al, Fe/(Mg + Fe) and Ca/(Ca + Mg + Fe) and a decrease in Si from the colorless core to the pinkish margin are observed. This may suggest that SiO2 concentration in magma crystallizing the clinopyroxene decreases successively and that the dolerite belongs to alkaline suite. |
| Type: | bulletin (article) |
| URI: | http://hdl.handle.net/2115/36708 |
| Appears in Collections: | Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and mineralogy > Vol.XX, No.1
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