Myrmekite from the Charnockite Series of Amaravathi, Guntur District, Andhra Pradesh

Authors

  • A. Ramaswamy
     Department of Geology, S. V. University, Tirupati
  • M. S. Murty
     Department of Geology, S. V. University, Tirupati

Abstract

A detailed description of myrmekite is furnished and its origin discussed in the light of the existing theories. Myrmekite is believed to be formed by exsolution, deriving both the components - quartz and plagioclase, which are held in solid solution in the form of albite and CaAl2, Si6O16 in po:ash felspar. Myrmekite in norite is presumed to be formed due to the breakdown of anorthite molecule of the plagioclase releasing the required silica, thus making the plagioclase less basic than its parent. The granulite facies (charnockite environmental) conditions seem to be ideal for the formation of myrmekite by exsolution process.

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Issue

Volume 13, Issue 3, September 1972

Section

Articles

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Published

1972-09-01

How to Cite

Ramaswamy, A., & Murty, M. S. (1972). Myrmekite from the Charnockite Series of Amaravathi, Guntur District, Andhra Pradesh. Journal of Geological Society of India, 13(3), 273–276. Retrieved from http://www.geosocindia.com/index.php/jgsi/article/view/61563

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