Iron Ore Mineralization of Ramagiri Greenstone Belt, Anantapur District, Andhra Pradesh, India

Lakshmidevamma B., Venkatarami Reddy Y., Gope Naik V., (doi: 10.23953/cloud.ijaese.314)

Abstract


Archaean provinces have rocks of 2500 Ma to 3000 Ma that contain, i. the granite – greenstone association, ii. The high-grade association and the cratonic basin association. Amongst the above said features, the granite - greenstone association is more in abundance and is characterized by the presence of mafic volcanic that has dominated the other units and is known as greenstone belts. These belts are surrounded by variant granitoids. These rocks are metamorphosed to greenschist to amphibolites facies and are hosts for mineralization of gold, copper, silver and iron etc. The main thrust in respect of mineralization is on the iron ore that is associated with the belt. It is mainly of “Algoma” type having alternate bands of magnetite and chert. The mineralization is in the Banded Iron formation of the Ilkal formation (Greenstone Group) and is very proximal to Ramagiri village. The thesis deals with all the details like distribution, possible origin and economic viability of the iron ore.


Keywords


Hypothesis for origin of early Proterozoic iron – formation; Mineralization of iron ore; Ramagiri Greenstone belt

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