Textural Analysis and Mineralogy of the Black Sand Deposits of Visakhapatnam-Bhimunipatnam Coast, Andhra Pradesh, India

Authors

  • T. Ramamohana Rao
     Geology Department, Andhra University, Waltair 530003
  • Ch. Shanmukha Rao
     Geology Department, Andhra University, Waltair 530003
  • K. Sanyasi Rao
     Geology Department, Andhra University, Waltair 530003

Abstract

Textural analysis reveals that the black sand samples are well sorted. negatively skewed, mostly mesokurtic and unimodal in distribution with the Mean Size of the grains falling mostly within the fine sand. The opaques and non-opaque heavies in a weighted average sample constitute 78.1% and represent the full range of minerals found in the rocks of the Eastern Ghats. The marked preference of a particular heavy mineral to a certain sieve fraction can be related to the grain size of the heavy mineral in the source rocks. The occurrence of thin layers of black sand in the stream channels inland. the non-disappearance of any unstable heavy mineral in the deposits, suggest that the black sands are derived from the highland area.

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Issue

Volume 23, Issue 6, June 1982

Section

Research Papers

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Published

1982-06-01

How to Cite

Ramamohana Rao, T., Shanmukha Rao, C., & Sanyasi Rao, K. (1982). Textural Analysis and Mineralogy of the Black Sand Deposits of Visakhapatnam-Bhimunipatnam Coast, Andhra Pradesh, India. Journal of Geological Society of India, 23(6), 284–289. Retrieved from https://geosocindia.com/index.php/jgsi/article/view/65062

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