TITLE:
Petrographic Studies of Pb-Zn Ore Deposits of Rajpura-Dariba-Bethumni Belt in District Udaipur (Rajasthan) India
AUTHORS:
Juned Alam, Farhat Nasim Siddiquie, Mohd Shaif
KEYWORDS:
Sphalerite, Galena, Pyrite, Zn-Pb Ores, Ore Textures, Rajpura-Dariba-Bethumni Belt, Udaipur District (Rajasthan)
JOURNAL NAME:
International Journal of Geosciences,
Vol.6 No.4,
April
13,
2015
ABSTRACT: The Proterozoic
Aravalli-Delhi orogenic complex hosts a large number of economically important
stratabound base metal sulphide deposits. In the present work, rock samples
taken from Outcrop and Underground Mine of Sindeskar Kalan, Vedanta Group,
Rajpura-Dariba-Bethumni Belt which are located at a distance of 76 Kms from
Udaipur District (Rajasthan) have been studied. The chief litho units of the
group are identified which contain sulfide-bearing calc-silicate and graphite
mica schist, dolomite marble, calc-biotite schist and quartzite. Importance to
the ore minerals like galena and sphalerite which have been reported in
association with the buffer minerals like pyrite and pyrrhotite occurr in the
host rocks of the study area. Ore petrography denotes two types of sphalerites,
1) highly deformed and dark brown colour, 2) less deformed and with light
yellow colour. Galena shows high reflectance and a network of triangular pits.
Pyrite shows high reflectance and anomalous anisotropism because of high
brittleness.