Detrital iron-ore deposits in the Iron Ore Group of rocks, northern Orissa, eastern India

Mohapatra, B. K.; Singh, Prem Prakash; Mishra, Pratibha; Mahant, K.

doi:10.1080/08120090802266592

Cited by 7 publications

(10 citation statements)

References 6 publications

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“…The rocks have been subjected to multiple phases of deformation. A prominent fault present along the eastern side of the belt, termed the boundary fault, has a north-south trend, although east-west faults are also present (Mohapatra et al 2008). Kumar (1986) explains the rock succession exposed in the southern Singbhum and keonjhar and lying unconformably over the "Older Metamorphics" was named as Iron Ore Series".…”

Section: Geology Of Noamundi and Jodamentioning

confidence: 98%

Hyperspectral Radiometry to Quantify the Grades of Iron Ores of Noamundi and Joda Mines, Eastern India

Thangavelu

Sanjeevi

Bhattacharya

2011

J Indian Soc Remote Sens

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This paper present the results of a preliminary study to assess the potential of the visible, NIR and SWIR energy of the EMR in differentiating iron ores of different grades in a rapid manner using hyperspectral radiometry. Using different iron ore samples from Noamundi and Joda mines, Jharkhand and Orissa, states of India, certain spectro-radiometric measurements and geochemical analysis were carried out and the results have been presented. It was observed that the primary spectral characteristics of these iron ores lie in the 850 to 900 nm and 650-750 nm regions. The spectral parameters for each curve used for studying the iron ores are: (i) the slopes of the spectral curve in 685-725 nm region; (ii) position of the peak with respect to wavelength in 730-750 nm region and (iii) radius of curvature of the absorption trough in the 850-900 nm region. Comparison of these spectral parameters and the geochemistry of the samples indicates that the position of the peak of the curve in 730-750 nm region shifts towards longer wavelength with increasing iron oxide content, while the slope of the curvature in the 685-725 nm region has a strong negative correlation with the iron oxide content of the samples. Similarly, a strong negative correlation is observed between the radius of curvature of the 850-900 nm absorption trough and the iron oxide content. Such strong correlations indicate that hyperspectral radiometry in the visible and NIR regions can give a better estimate and quantification of the grades of iron ores. This study has demonstrated that generation of empirical models using hyperspectral radiometric techniques is helpful to quantify the grade of iron ores with limited geochemical analysis.

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Section: Geology Of Noamundi and Jodamentioning

confidence: 98%

Hyperspectral Radiometry to Quantify the Grades of Iron Ores of Noamundi and Joda Mines, Eastern India

Thangavelu

Sanjeevi

Bhattacharya

2011

J Indian Soc Remote Sens

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“…Joda East Iron ore Mine (JEIM) is part of the volcano-sedimentary basins with iron ore deposits belonging to the Iron Ore Group (IOG) of Archaean Singhbhum Craton. Details of mineralogy and geochemistry of this deposit has been dealt by different researchers [3][4]. Beneficiation plant is in operation with the primary objective of reducing alumina in iron ore.…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of sodium silicate as gangue depressants in iron ore slimes flotation

Rao

Vijayakumar

Rao

et al. 2011

Int J Miner Metall Mater

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The recovery of iron from the screw classifier overflow slimes by direct flotation was studied. The relative effectiveness of sodium silicates with different silica-to-soda mole ratios as depressants for silica and silicate bearing minerals was investigated. Silica-to-soda mole ratio and silicate dosage were found to have significant effect on the separation efficiency. The results show that an increase of Fe content in the concentrate is observed with concomitant reduction in SiO 2 and Al 2 O 3 levels when a particular type of sodium silicate at a proper dosage is used. The concentrate of 58.89wt% Fe, 4.68wt% SiO 2 , and 5.28wt% Al 2 O 3 with the weight recovery of 38.74% and the metal recovery of 41.13% can be obtained from the iron ore slimes with 54.44wt% Fe, 6.72wt% SiO 2 , and 6.80wt% Al 2 O 3 , when Na 2 SiO 3 with a silica-to-soda mole ratio of 2.19 is used as a depressant at a feed rate of 0.2 kg/t.

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“…Srinivasan & Naqvi 1990;Naha et al 1995;Vasudev & Chadwick 2008;Bhushan & Sahoo 2010), but only a few have been the subject of true geological research (e.g. Reddy et al 2002;Mohapatra et al 2008), and fewer still have been investigated sedimentologically in some detail (e.g. Chatterjee & Das 2004;Bhattacharya & Mahapatra 2008).…”

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confidence: 99%

Chapter 8 Archaean sedimentation on the Singhbhum Craton: depositional environments of conglomerates in Jharkhand (east India)

Loon

2015

Memoirs

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Archaean to Palaeoproterozoic metasediments overlie the Archaean granitoid pluton of the Singhbhum Craton in east India. Relatively little is known about the Archaean metasediments, but they comprise several conglomerates in the state of Jharkhand. Their age is most probably Mesoarchaean, possibly earliest Neoarchaean. They occur at separate localities and their exposures commonly consist of scattered patches with a limited extent. Their interrelationships are consequently poorly known. Sedimentological analysis of their structure, architecture and clast composition suggests that most of them represent individual occurrences that partly have been largely eroded away. Other occurrences must have had a limited extent from the very beginning. The various conglomerates were deposited in different environments. Some represent braided or meandering fluvial environments, whereas others seem to have been deposited by mass flows with different degrees of viscosity, possibly mainly on alluvial fans.

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Detrital iron-ore deposits in the Iron Ore Group of rocks, northern Orissa, eastern India

Cited by 7 publications

References 6 publications

Hyperspectral Radiometry to Quantify the Grades of Iron Ores of Noamundi and Joda Mines, Eastern India

Hyperspectral Radiometry to Quantify the Grades of Iron Ores of Noamundi and Joda Mines, Eastern India

Effectiveness of sodium silicate as gangue depressants in iron ore slimes flotation

Chapter 8 Archaean sedimentation on the Singhbhum Craton: depositional environments of conglomerates in Jharkhand (east India)

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