STRUCTURAL CONTROL AND GENESIS OF THE PEGMATITES AROUND BHILWARA, RAJASTHAN, INDIA

Abstract

"In the words of Dana 'Pegmatites are the museum of nature'. Moreover, they have a unique economic importance and are recognised the world over, as the store house of nuaerous valuable minerals. ?he 3hil*ara pegnatltes of Bajasthan are considered important for their musosvitc and beryl and lately for the tavs earth minerals, ""rude mining methods for their exploitation were employed roughly i« the third decade of the present century and stll the mining is primitive. There Is not mioh of mechanisation an-.* most of the mines are closed with the decline in mica concentration and with the fall In prices* In the following pages the results of the detailed studies carried on the pegmatites are given with a vie* to unravel the difficult problems of their emplacement. Along with this pursuit of pro-Men some stratlgrvphlc correl tions and the general tectonlo pattern of the area have be**n worked out. ) ring these investigations atte pts have been made to establish the nature of eoonomic concentration of Muscovite In a pegmatite and its implications as most of the pegmatites are generally considered as very erratic. It is hoped that the present work will not only provide better academic understanding of the pegmatite the geology of the Bhilwara area but also, will provide appreciable help in the prospecting and exploitation of the pegmatites."