Age of granitic activity associated with copper?molybdenum mineralization at Malanjkhand, Central India

Panigrahi, M. K.; Bream, Brendan R.; Misra, Kamakhya Prakash; Naik, Rajesh Kumar

doi:10.1007/s00126-004-0441-0

Cited by 52 publications

(29 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The basement gneisses have Archean ages (cf. Sm-Nd age of 2325e2494 Ma for the Tirodi Gneiss, Ahmad et al, 2009; U-Pb zircon ages of 2378 AE 17 and 2432 AE 5 Ma of the Amgaon Gneiss, Ahmad et al, 2009; and 2478 AE 9 Ma Re-Os age by Stein et al, 2004; 2480 AE 3 Ma U-Pb zircon age by Panigrahy et al, 2002 reported for the Malanjkhand Granite). The unconformable relationship between the Tirodi Gneiss and the Sausar Group is marked by the presence of polymictic conglomerates at the contacts of the two units (Mohanty, 1993).…”

Section: The Western Domain Of the Satpura Mountainsmentioning

confidence: 90%

Spatio-temporal evolution of the Satpura Mountain Belt of India: A comparison with the Capricorn Orogen of Western Australia and implication for evolution of the supercontinent Columbia

Mohanty

2012

Geoscience Frontiers

View full text Add to dashboard Cite

show abstract

Section: The Western Domain Of the Satpura Mountainsmentioning

confidence: 90%

Spatio-temporal evolution of the Satpura Mountain Belt of India: A comparison with the Capricorn Orogen of Western Australia and implication for evolution of the supercontinent Columbia

Mohanty

2012

Geoscience Frontiers

View full text Add to dashboard Cite

show abstract

“…The origin and evolution of the Malanjkhand coppermolybdenum deposit is still under debate (Sikka, 1989;Sarkar et al, 1996Sarkar et al, , 1997Panigrahi andMookherjee, 1997, 1998;Sikka and Nehru, 1998;Stein et al, 2004Stein et al, , 2006Panigrahi et al, 2006). The age of the major phase of the granitoid complex hosting the copper deposit has been constrained by U-Pb dating on zircons (~2476 ± 8 Ma; Panigrahi et al, 2004).…”

Section: Geological Setting Of Malanjkhand Orementioning

confidence: 99%

“…The age of the major phase of the granitoid complex hosting the copper deposit has been constrained by U-Pb dating on zircons (~2476 ± 8 Ma; Panigrahi et al, 2004). Stein et al (2004Stein et al ( , 2006 provided Re-Os models and isochron dates (ranging from 2491 to 2439 Ma) of molybdenite from the mine pit and from the leucogranite.…”

Section: Geological Setting Of Malanjkhand Orementioning

confidence: 99%

“…Using temperature-salinity plots, Panigrahi and Mookherjee (1997) concluded that the mineralization was brought about by a mixture of two fluids: A hightemperature (~375°C) and low-saline (4 to 8 wt.% NaCl equivalent) fluid, containing appreciable amounts of CO 2 and sulfur (from now on referred to as "F 1 "); and a lowtemperature (180-200°C), moderately saline (20 to 24 wt.% NaCl equivalent) metal-rich fluid (F 2 ). They also suggested that F 2 was the dominant fluid component and was derived from the main phase of the Malanjkhand granitoid, the coarse grained granodiorite-tonalite exposed in the mine pit and its surroundings (Panigrahi et al, 1993(Panigrahi et al, , 2004. A minor phase of leucogranite, whose temporal relationship with the main phase is unclear as of yet, is exposed in the ore zone vicinity at Malanjkhand.…”

Section: Geological Setting Of Malanjkhand Orementioning

confidence: 99%

“…Elements residing in the hydroxyl site of biotite have greater exchangeability relative to ions in the tetrahedral K-feldspar; (c) K-feldspar (unaltered) with chalcopyrite in the fractures and cleavage spaces, a strikingly recurrent feature in all the ore types at Malanjkhand. try of biotite, chlorite and epidote from different mineral assemblages such as biotite + K-feldspar ± magnetite ± pyrite; biotite + K-feldspar + chalcopyrite; chlorite + chalcopyrite and epidote + chalcopyrite from the Malanjkhand copper-molybdenum deposit, the largest open pit copper mine in India (Seetharam, 1976;Jairath and Sharma, 1986;Sikka, 1989;Panigrahi et al, 1991Panigrahi et al, , 1993Panigrahi et al, , 2004Sarkar et al, 1996;Panigrahi andMookherjee, 1997, 1998;Pal, 1999, 2000;Stein et al, 2004Stein et al, , 2006). An estimated reserve of 789 million tons of copper ores with a grade of 0.83% Cu (Sikka, 1989) underlines the economic importance of this deposit.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Reconstructing physico-chemical parameters of hydrothermal mineralization of copper at the Malanjkhand deposit, India, from mineral chemistry of biotite, chlorite and epidote

et al. 2008

Self Cite

View full text Add to dashboard Cite

Mineral chemistry of biotite, chlorite and epidote associated with the granitoid ore body of the Malanjkhand coppermolybdenum deposit have been studied to constrain temperature, oxidation and sulfidation states as well as fugacity ratios of HF, HCl and H 2 O of the hydrothermal mineralizing fluid. Calculated mineralizing temperatures from biotite, chlorite and epidote are mutually consistent and agree well with earlier estimates derived from fluid inclusion studies. Major element chemistry of biotite indicates low oxidation state (FMQ-NNO) and re-equilibrated nature (~300°C). However, exchange of Cl-F-OH between biotite and the fluid continued to lower temperatures. Subtle differences between the Malanjkhand deposit and known porphyry copper deposits have been evidenced by the fugacity ratios of halogens and water. Chlorite registers equilibrium with fluid down to 200°C and, together with biotite composition, indicates that copper was transported as chloride complex in the fluid. Sulfide deposition occurred during a prompt rise in fugacity of H 2 S at 300°C, possibly resulting from a coupled oxidation of Fe 2+ and reduction of SO 4 2-. Interaction of ore fluid with epidote in the wall-rock favored the deposition of chalcopyrite, enhanced the Ca 2+ activity in the fluid and inhibited a fall in pH and a subsequent acid alteration of K-feldspar in the wall-rock. These physicochemical characteristics of the mineralized fluid suggest that the Malanjkhand deposit represents an ancient granitoid-associated geothermal system rather than a classic porphyry copper ore deposit.

show abstract

Magma chamber processes and geodynamic implications of the Pithora pluton, Bastar Craton, Central India

et al. 2019

View full text Add to dashboard Cite

The interaction between the coeval mafic and felsic magmas result in mixing, mingling, and chemical exchanges between both the end‐member magmas. We document the features relevant to the magma chamber processes and quantify the extent of mixing by means of detailed field, petrographic, mineral, and whole‐rock geochemistry from one of the less known granitic plutons from the Pithora region that forms part of the Kanker granite, Bastar Craton. The study area is composed of granite, granodiorite (mixed zone), and quartz diorite microgranular enclaves (MEs). The occurrence of syn‐plutonic mafic dykes, cuspate contact, magmatic flow textures, and hybridization suggest the coeval emplacement of end‐member magmas. Petrographic evidence such as disequilibrium textures such as resorption, quartz ocelli, and spikes in plagioclase, acicular apatites, and mafic clots are formed by magma mixing. Plagioclase from MEs and the mixed region exhibit disequilibrium textures such as normal, reverse, and oscillatory zoning suggestive of magma mixing. Whole‐rock geochemical data indicates the metaluminous to peraluminous host granites and metaluminous ME. The broadly linear trend of geochemical variation diagrams for these granitoids and MEs showcase the hybridization of two end‐member magmas. The mineral chemistry of the biotites and hornblende show subduction affinity, being further constrained by whole‐rock trace elemental systematics. The granitoids of Pithora region were formed in a subduction setting where large‐scale mantle‐ and crustal‐derived magmas were generated and subsequently mixed at crustal emplacement level.

show abstract

Age of granitic activity associated with copper?molybdenum mineralization at Malanjkhand, Central India

Cited by 52 publications

References 22 publications

Spatio-temporal evolution of the Satpura Mountain Belt of India: A comparison with the Capricorn Orogen of Western Australia and implication for evolution of the supercontinent Columbia

Spatio-temporal evolution of the Satpura Mountain Belt of India: A comparison with the Capricorn Orogen of Western Australia and implication for evolution of the supercontinent Columbia

Reconstructing physico-chemical parameters of hydrothermal mineralization of copper at the Malanjkhand deposit, India, from mineral chemistry of biotite, chlorite and epidote

Magma chamber processes and geodynamic implications of the Pithora pluton, Bastar Craton, Central India

Contact Info

Product

Resources

About