TITLE:
Melt Inclusion Studies of Pb-Zn Ore Deposits of Rajpura-Dariba-Bethumni Belt in District Udaipur, (Rajasthan) India
AUTHORS:
Juned Alam, Farhat Nasim Siddiquie
KEYWORDS:
Sphalerite, Zn-Pb Ore, Melt Inclusion, Rajpura Dariba-Bethumni Belt, Rajasthan
JOURNAL NAME:
International Journal of Geosciences,
Vol.6 No.6,
June
16,
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 mines of Sindeskar Kalan, Vedanta Group,
Rajpura Dariba-Bethumni Belt which were located at a distance of 76 Kms from
Udaipur District (Rajasthan) have been studied. The chief litho units of the
group were 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 occurred in the
host rocks of the study area. The study of melt inclusion (sulfide melt) of
sphalerite showed the maximum temperature of melting which was 923°C on the
Linkam-TMS94 (the maximum temperature limit of the system is up to 1500°C). The
maximum temperature of melting of sphalerite reveals that the dolerite and/or
pegmatite intrusion might have supplied sulfide rich melt during the study area
in the geological past.