Srinivasan, T. P. ; Chalapathi Rao, N. V. (1995) Mineralogy and textural features of Settupalle syenites, Prakasm District, Andhra Pradesh Journal of Geological Society of India, 45 (2). pp. 137-144. ISSN 0016-7622
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Official URL: http://www.geosocindia.org/index.php/jgsi/article/...
Abstract
The Settupalle igneous complex is characterised by syenitic variants with distinct mineralogic assemblages. The variable perthitic patterns, nature of plagioclase, fayalite-quartz assemblage in Settupalle syenites clearly suggest that the Settupalle igneous complex has evolved under fluctuating pressure and temperature conditions. The mineral chemistry of K-feldspar and plagioclase suggests that K-feldspar assemblage in these rocks indicates their subsolvus nature. The probable crystallization sequence of rocks is Fayalite Clinopyroxene Syenite (FC-Syenite) - Fayalite Quartz Syenite (FQ-Syenite)-hornblende syenite - quartz syenite - nepheline syenite in that order.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Geological Society of India. |
| Keywords: | Mineralogy; Syenites; Settupalle; Prakasarn District; Andra Pradesh |
| ID Code: | 104475 |
| Deposited On: | 26 Dec 2017 11:11 |
| Last Modified: | 26 Dec 2017 11:11 |
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