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Origin of fluorite mineralisation and hydrothermal alteration at the Chandidongri deposit, Rajnandgaon District, Central India - Evidence from oxygen and hydrogen isotopes

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Title Origin of fluorite mineralisation and hydrothermal alteration at the Chandidongri deposit, Rajnandgaon District, Central India - Evidence from oxygen and hydrogen isotopes
 
Creator CHANGKAKOTI, A
PANDALAI, HS
GRAY, J
AHMAD, S
PERASUD, ER
 
Subject madhya-pradesh
systems
fluorite mineralisation
hydrothermal alteration
oxygen and hydrogen isotopes
central india
 
Description Economic mineralization relatable to the early-Proterozoic Dongargarh granite that forms part of a large volcano-plutonic complex of Central India includes the Chandidongri fluorite deposit located on the granite, a few small deposits of uranium in sheared rhyolites and basic rocks in close proximity to the granite, and minor Cu +/- Pb mineralisation within sheared rhyolites. In the fault-controlled fluorite deposit at Chandidongri, the delta 18O values of fluorite-bearing quartz range from 11.4 to 13.8 per mil, whereas delta O-18 values of quartz from intensely altered granites range from 13.0 to 14.4 per mil. The delta D values of fluid inclusion waters extracted from vein-quartz, fluorite and quartz from altered granites range from -32 to -52, -38 to -40 and -48 to -60 per mil respectively. The delta 18O values and measured delta D values indicate a dominantly meteoric source for the fluorite and alteration fluids that may have undergone slight mixing with magmatic water.
 
Publisher GEOLOGICAL SOC INDIA
 
Date 2011-07-30T05:48:55Z
2011-12-26T12:52:41Z
2011-12-27T05:39:26Z
2011-07-30T05:48:55Z
2011-12-26T12:52:41Z
2011-12-27T05:39:26Z
2006
 
Type Article
 
Identifier JOURNAL OF THE GEOLOGICAL SOCIETY OF INDIA, 67(1), 33-40
0016-7622
http://dspace.library.iitb.ac.in/xmlui/handle/10054/7865
http://hdl.handle.net/10054/7865
 
Language en