Refine your search
Co-Authors
- Sohail Fahmi
- A. K. Bhatt
- Govind Singh
- Rajendra Singh
- D. V. Subba Rao
- A. Rai Choudhuri
- D. B. Guha
- B. C. Sarkar
- M. K. Roy
- K. A. Raju
- D. Veera Bhaskar
- K. Asha
- Nasim Ahmad
- K. M. Singh
- Shekhar Gupta
- K. Nautiyal
- V. R. Akhila
- V. K. Shrivastava
- A. K. Padhi
- M. B. Verma
- A. P. Kushwaha
- S. P. Upadhyay
- Kuldeep Nautiyal
- B. V. S. N. Raju
- Santu Patra
- Jitu Gogoi
- U. P. Sharma
- Rahul Banerjee
- Vivekanand Kain
- Deependra Singh
- C. K. Asnani
- Kamlesh Kumar
Journals
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Sinha, D. K.
- Evidences for Soda Metasomatism in Ladera-Sakhun Area, Northeastern Rajasthan
Abstract Views :212 |
PDF Views:2
Authors
Affiliations
1 Department of Atomic Energy, C-31, Devnagar, Tonk Road, Jaipur-302018, IN
2 Department of Atomic Energy, AMD Complex, Begumpet, Hyderabad-560016, IN
1 Department of Atomic Energy, C-31, Devnagar, Tonk Road, Jaipur-302018, IN
2 Department of Atomic Energy, AMD Complex, Begumpet, Hyderabad-560016, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 56, No 5 (2000), Pagination: 573-582Abstract
Albitite and albitised banded gneissic country rock from the Ladera-Sakhun area, situated about 80km southwest of Jaipur, show several evidences for soda metasomatism. Megascopic evidences include reddening of outcrops due to aventurisation, gradational contacts between albitite and gneisses, development of metasomatic minerals, dequartzification, epidotization and cataclasitisation. Microscopic evidences include relict microcline in the newly formed albite grain, poor and discontinuous development of twin lamellae in albite giving step-like appearance, ubiquitous sweeping extinction in albite due to cataclasitisation, occasional mortar texture in albitite, tapering of twin lamellae within the grain, twin lamellae forming in chequered fashion, development of aventurine albite containing dusty Fe-oxide inclusions, development of albite along twin/cfeavage plane of microcline, formation of new albite in plagioclase, destruction of sericite in plagioclase of albitised granite, formation of myrmekite of intergranular, intragranular and rim types, development of epidote corona around clinopyroxene in pyroxenite, partial to complete dequartzification and filling up of voids by calcite. Petrochemical evidences of increased characteristic values of Na2O from 3.17 to 7.00 wt%, K2O and Si2O from -0.03 to -6.00 wt% and -0.76 to -10.55 wt% in the unalbitised to albitised rocks respectively, provide further support for soda metasomatism. Albitisation at Ladera-Sakhun area extends over a considerable distance into Haryana in the NE and beyond Tal in the SW, attesting to its regional significance and its potential for mineralisation.Keywords
Petrology, Metasomatism, Albitite, Ladera-Sakhun, Rajasthan.
- A New Find of Younger Dolerite Dykes with Continental Flood Basalt Affinity from the Meso-Neoproterozoic Chhatisgarh Basin, Bastar Craton, Central India
Abstract Views :186 |
PDF Views:121
Authors
Affiliations
1 Scientific Officer/G, AMD, Plot No 188, Laxmi Nagar, Niwaru Road, Jhothwara, Jaipur - 302 012, IN
2 National Geophysical Research Institute, Hyderabad - 500 007, IN
1 Scientific Officer/G, AMD, Plot No 188, Laxmi Nagar, Niwaru Road, Jhothwara, Jaipur - 302 012, IN
2 National Geophysical Research Institute, Hyderabad - 500 007, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 70, No 2 (2007), Pagination: 371-373Abstract
No Abstract.Full Text
- Evolution of the Great Boundary Fault: a Re-Evalution
Abstract Views :175 |
PDF Views:121
Authors
Affiliations
1 Plot no. 188, Laxmi Nagar, Niwaru Road, Jhothwara, Jaipur - 302 012, IN
2 Geological Survey of India, Salt Lake city, Kolkata - 700 091, IN
1 Plot no. 188, Laxmi Nagar, Niwaru Road, Jhothwara, Jaipur - 302 012, IN
2 Geological Survey of India, Salt Lake city, Kolkata - 700 091, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 65, No 2 (2005), Pagination: 258-258Abstract
No Abstract.Full Text
- Geochemistry of Mesoproterozoic Lower Vindhyan Shales from Chittorgarh, Southern Rajasthan and its Bearing on Source Rock Composition, Palaeoweathering Conditions and Tectonosedimentary Environment
Abstract Views :174 |
PDF Views:135
Authors
Affiliations
1 Sarala Sadan, Laxmi Nagar, Jhothwara, Jaipur, IN
1 Sarala Sadan, Laxmi Nagar, Jhothwara, Jaipur, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 61, No 6 (2003), Pagination: 737-741Abstract
No Abstract.Full Text
- Discovery of the Uraniferous Polymetallic Veins in the Gneisses of Chhota-Udaipur, Ajmer District, Ra Jasthan
Abstract Views :180 |
PDF Views:182
Authors
Affiliations
1 Atomic Minerals Directorate for Exploration and Research, Department of Atomic Energy, 521207 Pratap Nagar, Tonk Road, Sanganer-Jaipur -303 609, IN
1 Atomic Minerals Directorate for Exploration and Research, Department of Atomic Energy, 521207 Pratap Nagar, Tonk Road, Sanganer-Jaipur -303 609, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 59, No 5 (2002), Pagination: 469-472Abstract
Uraniferous polymetallic veins are found in the Gyangarh Asind acidic igneous suite and Sandmata Complex near Chhota-Udaipur in Rajasthan. These veins occur in continuation of the well-known U-Co-Mo mineralised albitite zone in Rajasthan and represent a potential target.Full Text
- Sulphur Isotopic Characteristics of Pyrite and Galena from the Singhora Group, Chhattisgarh Supergroup, India: Genetic Implications
Abstract Views :170 |
PDF Views:2
Authors
Affiliations
1 Atomic Minerals Directorate for Exploration and Research, Jaipur - 302 018, IN
2 Atomic Minerals Directorate for Exploration and Research, Nagpur - 440 001, IN
3 Atomic Minerals Directorate for Exploration and Research, Hyderabad - 500 016, IN
1 Atomic Minerals Directorate for Exploration and Research, Jaipur - 302 018, IN
2 Atomic Minerals Directorate for Exploration and Research, Nagpur - 440 001, IN
3 Atomic Minerals Directorate for Exploration and Research, Hyderabad - 500 016, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 57, No 2 (2001), Pagination: 171-177Abstract
Rocks of Singhora Group, Chhattisgarh Supergroup, deposited in a protobasin, contain pyrite and galena near Juba and Banjhapalli villages of Raipur District, Madhya Pradesh. Veins of fluorite, quartz and quartz-feldspathic material reported along the eastern and western margins of the protobasin contain galena and pyrite in the sedimentary rocks. Pyrites are developed diagenetically, epigenetically and by remobilization in Rehatikhol Formation of Singhora Group, while only epigenetic pyrite occurs in the basement. High positive δ34S values (+3 1.58‰ δ34S samples) for diagenetic pyrite indicate reaction between iron-bearing minerals and H2S and/or HS- generated by reduction of seawater sulphate. High δ34S value (+23.35‰) for galena is due to reaction between diagenetic pyrite and base metal-bearing fluids at elevated temperatures. The galena-pyrite pair developed epigenetically shows 135°C temperature for their formation at near equilibrium conditions. Galena grains collected from quartzo-feldspathic/quartz veins from the eastern margin of Singhora protobasin near Chiwarkuta village yielded δ34S value of +11.1‰, while pyrite from quartz veins of Birsinghpali-Kapudih tract of western margin has givenδ34S value of +3.3‰. These values suggest an igneous source for the fluids, probably from a magma that assimilated sulphur from the country rocks. High δ34S value (+27‰) of pyrite in black shale of Saraipalli Formation explains its deposition below mud-water interface. Quartz arenite of Bhalucona Formation overlying the Saraipalli shales contains pyrite concretions having a δ34S value of +23.7‰. δ34S value (+3.4‰) of pyrites from migmatite and quartz veins intruding the crystallines of eastern margin i.e. Sambalpur Granitoid that forms the basement to Chhattisgarh Supergroup, also shows magmatic source of sulphur that could have been generated from the upper mantle or homogenized crust.Keywords
Sulphur Isotopes, Pyrite, Galena, Chhattisgarh Basin.- Economic Analysis of Growth, Instability and Resource Use Efficiency of Sugarcane Cultivation in India:An Econometric Approach
Abstract Views :229 |
PDF Views:223
Authors
Affiliations
1 Department of Agricultural Economics, Dr. Rajendra Prasad Central Agricultural University, Pusa (Samastipur), Bihar-848 125, IN
2 Extension Education, Dr. Rajendra Prasad Central Agricultural University, Pusa (Samastipur), Bihar-848 125, IN
1 Department of Agricultural Economics, Dr. Rajendra Prasad Central Agricultural University, Pusa (Samastipur), Bihar-848 125, IN
2 Extension Education, Dr. Rajendra Prasad Central Agricultural University, Pusa (Samastipur), Bihar-848 125, IN
Source
Indian Journal of Economics and Development, Vol 6, No 4 (2018), Pagination: 1-10Abstract
Objectives: To find out the growth, as well as instability in area, production and productivity of sugarcane farming and to assess the resource use efficiency in major sugarcane growing states of India and trade performance of sugar.
Methods/Statistical Analysis: Investigation is based on secondary data of area, production and productivity of sugarcane in major sugarcane growing states of India for the period from 2000-01 to 2015-16. Efficiency of sugarcane production was estimated using plot level data obtained from website of Cost of Cultivation Scheme, Directorate of Economics and Statistics, Ministry of Agriculture and Farmers Welfare, Government of India for the year, 2014-15. Compound growth rates, instability indices using formula suggested by Cuddy- Della Valle, and resource use efficiency using Data Envelopment approach (DEA) were computed.
Findings: At national level area, production and productivity of sugarcane went up during the period of investigation. Similar result was also observed in case of growth rates of sugarcane crop which were found positive and encouraging. The area under sugarcane was found stable in the states like Uttar Pradesh, Uttrakhand and Gujarat on the other hand the yield of sugarcane recorded almost stable in Uttar Pradesh, Uttrakhand and Tamil Nadu. Technical efficiency at national level in sugarcane production was found to be 66% which indicated that the production of crop may further be raised by 34% with the available technology. Allocative mean efficiencies indicated that costs may be reduced by 40% through using optimum combination of inputs keeping in mind their prices while selecting their quantities. The cost efficiency (CE) asserted that farmers may potentially reduce their overall cost of sugarcane production, upto 60% to harvest the existing level of output at least cost. Undoubtedly, the export of sugar from India has increased during the period of investigation.
Applications/Improvements: State government initiatives were found appreciable making sugarcane cultivation more remunerative. Proper use of scarce resources may make it more productive and profitable and realizing the objective of doubling income and uplifting standard of cultivators.
Keywords
Sugarcane, Data Envelopment Approach, Resource Use Efficiency, Technical Efficiency, Allocative Efficiency, Cost Efficiency.Full Text
References
- Commission for agricultural costs and prices. Price Policy for Sugarcane. 2015; 1-80.
- K.M. Arjun. Indian agriculture- status, importance and role in Indian economy. International Journal of Agriculture and Food Science Technology. 2013, 4(4), 343-346.
- V.P. Sharma. India’s agrarian crisis and smallholder producers’ participation in new farm supply chain initiatives: a case study of contract farming. Food and Agriculture Organization of the United Nations. 2007.
- Onwueme IC, Sinha TD. CTA field crop production in tropical Africa. CTA, WageNingen, Netherlands. 1991; 401-411.
- Directorate of Economics and Statistics. http://des.kar.nic.in/. Date accessed: 07/05/2016.
- R.K. Rout, A.K. Behera, P.K. Padhiary, A. Nanda, A. Nayak, D. Behra, T. Das. A study on resource use efficiency of sugarcane farms: evidence from village level study in Orissa, India. International Journal of Current Microbiology and Applied Sciences. 2017, 6(11), 1955-1962.
- Directorate of Economics and Statistics, Ministry of Agriculture and Farmers Welfare. http://eands.dacnet.nic.in/. Date accessed: 26/02/2018.
- J.D.A. Cuddy, P.A. Della Valle. Measuring the instability of time series data. Oxford Bulletin of Economics and Statistics. 1978; 40, 79-85.
- M.J. Farrel. The measurement of productivity efficiency. Journal of the Royal Statistical Society. 1957; 120(3), 253-290.
- R.D. Banker, A. Charnes, W.W. Cooper. Some models for estimating technical and scale inefficiencies in data envelopment analysis. Management Science. 1984; 30(9), 1078-92.
- A. Charnes, W. Cooper, E. Rhodes. Measuring efficiency of decision making units. European Journal of Operational Research. 1978; 2(6), 429-444.
- T. Coelli, P.D.S. Rao, E.B. George. An introduction to efficiency and productivity analysis. Kluwar Academic Publisher, London. 1998.
- N. Ahmad, D.K. Sinha, K.M. Singh, R.R. Mishra. Growth performance and resource use efficiency of maize in Bihar: economic perspectives. Journal of Agriculture Search. 2017; 4(1), 71-75
- N. Ahmad, D.K. Sinha, K.M. Singh. Estimating production efficiency in rice cultivation of Bihar: an economic approach. Economic Affair. 2017; 62(3), 1-8
- A. Kumar, R. Singh. Risk analysis in sugarcane production: evidences from Uttar Pradesh and Maharashtra states of India. International Journal of Current Microbiology and Applied Sciences. 2017, 6(9), 1211-1216.
- J.M. John, S.S. Mali. An economic analysis of area, production, yield and export of sugarcane in India. Acme Intellects International Journal of Research in Management, Social Sciences and Technology. 2016; 16(16), 1-17.
- A. Saravanan. Resource use efficiency of sugarcane production in Sathyamangalam Taluk of Erode district of Tamil Nadu: An economic analysis. Agricultural Situation in India. 2016; 21-28.
- Redeeming The Nexus of The Times:Tagore’s Birth Anniversary Contexts
Abstract Views :160 |
PDF Views:3
Authors
Affiliations
1 Indian Science Congress Association & Former Upacharya (Vice-Chancellor), Visva-Bharati, IN
1 Indian Science Congress Association & Former Upacharya (Vice-Chancellor), Visva-Bharati, IN
Source
Indian Science Cruiser, Vol 24, No 2 (2010), Pagination: 66-66Abstract
This year being the 150th birth anniversary of Rabindranath Tagore, its celebrations should inevitably unleash a variety of activities. One cannot rule out few mundane overtones on Tagore, which may not be even within miles of recapturing Tagore innovatively. Tagore’s legacy being invariably overwhelming, of course in qualitative terms, any centennial remembrance of Tagore ought to bring to the fore the evolving nexus with times. Contemporaneity, whatever be the period, has a compelling dimension in seeking ideas for which Tagore might have given some glimpses. As is wellknown, having dwelt on ‘crisis in civilization’, he could not possibly foresee the fetishes, one makes about ‘clash of civilization s’ nowdays. To him, culture has an overriding edge despite several disquieting impediments. Even today, facets of the culture, keep on emanating.
- Recapturing image of the volunteerism vis a vis Entrepreneurship in Acharya Prafulla Chandra Ray:150th Birth Tribute
Abstract Views :182 |
PDF Views:3
Authors
Source
Indian Science Cruiser, Vol 24, No 5 (2010), Pagination: 66-66Abstract
Prafulla Chandra Ray, widely known as P C Ray, has, even during his 150th Birth Anniversary Year, assuredly an inexorable image. Although he had few other celebrities, born in the same year, his is a remarkable exemplar of a preceptor who plunged himself to volunteerism, without dispensing with the quintessence of renaissance that still kept on lingering in his period. The scientific spin-off of renaissance seemed to be in the offing. True that J C Bose and P C Ray, could become, in academic realms, the precursors of science renaissance that could be sustained by Satyendra Nath Bose, Meghnad Saha, Jhan Chandra Ghosh, Jnanendra Nath Mukherjee, Debendra Mohan Bose, Prasanta Chandra Mahalanabis and other luminaries. It is equally true that he could obtain a robust ally in Sir Asutosh Mookerjee for building up institutional edifices in science.
- Towards The ‘Change’ Leading to A Critical Dialogue
Abstract Views :164 |
PDF Views:3
Authors
Source
Indian Science Cruiser, Vol 25, No 5 (2011), Pagination: 64-64Abstract
The word ‘change’, though a buzzword nowadays and aspired few months ago in different areas, is fast assuming a complexion by a handful of users. Is the vision that one used to associate earlier is losing gradually what it ought to have on a continuing basis? Or, is it something of the process of visualization that’s still in the offing? Did the erstwhile environment have a different vision? Were they useful at all? How did reliably the earlier features of change exist? Perhaps, emotions couldn’t be engaged appropriately earlier, far from predicting something.
- Seeking A Genre of Inclusivity
Abstract Views :147 |
PDF Views:3
Authors
Source
Indian Science Cruiser, Vol 26, No 3 (2012), Pagination: 66-66Abstract
‘Inclusivity’ as a word is fast coming to stay, largely because of its use in some aspects of human activity. It looks now that no other verbiage has received so much of stimuli and forms, too. Innovative attributes/features ought to be on the anvil. On the other hand, criticalities may have to be encountered in respect of its variants. Few queries may naturally arise. One may pause and should seek for responses of questions like: Does inclusivity have an historicity uniquely of its own or through its usages? Shouldn’t inclusivity have moorings as well, so as to make its allies flourish with several add-ons? Surprisingly, inclusive growth is a talk of the day, despite the economic setbacks, downturns and so forth. But, somehow or the other, realms of education seem to have an edge over others. This cannot just be attributed to what policymakers keep on harping on in the aftermath of the recent enactment of Right To Education (RTE).
- Serpentinized Peridotite-Hosted Uranium Mineralization (U–Cr–Ni–Mo–REE–Fe–Mg) in Kudada–Turamdih Area:A New Environment of Metallogeny in Singhbhum Shear Zone, India
Abstract Views :259 |
PDF Views:111
Authors
D. K. Sinha
1,
Shekhar Gupta
1,
K. Nautiyal
1,
V. R. Akhila
1,
V. K. Shrivastava
1,
A. K. Padhi
1,
M. B. Verma
1
Affiliations
1 Atomic Minerals Directorate for Exploration and Research, Hyderabad 500 016, IN
1 Atomic Minerals Directorate for Exploration and Research, Hyderabad 500 016, IN
Source
Current Science, Vol 117, No 5 (2019), Pagination: 830-838Abstract
Recent exploration efforts in Kudada-Turamdih area has brought to light, for the first time, serpentinizedperidotite- hosted uranium mineralization (up to 0.188% U3O8) of polymetallic nature (U–Cr—Ni–Mo–REE–Fe–Mg) in the domain of Singhbhum Shear Zone (SSZ). The peridotite has been emplaced into the Iron Ore Group (IOG) and represents late phase activity in the IOG. Exploratory drilling has established substantial lateral (600 m) and downdip (1000 m) continuity of the mineralization. Subhedral to anhedral disseminated uraninite grains (10–600 μm) with cell dimensions of 5.4498 to 5.4650 Å suggest crystallization in meso to hypo-thermal range (300– 500°C). Magnetite, chromite, molybdenite, cobaltite, nickeline, vaesite, cerussite, pyrite and chalcopyrite have also been identified in the REE enriched (Av. 1457 ppm) uraniferous peridotite. Presence of MgO (18–28%), Cr (295–3165 ppm), Ni (222–9530 ppm), Au (11–30 ppb), Pt (47–95 ppb) and As (15–755 ppm) suggests komatiitic parentage of host rock. Discovery of polymetallic mineralization in serpentinized peridotite, a hitherto unknown geological environment, opens up scope for further research and enhancement of uranium resources in the SSZ.Keywords
Polymetallic, Mineralization, Serpentinized Peridotite, Singhbhum Shear Zone, Uranium.Full Text
References
- Dunn, J. A., The geology of North Singhbhum including parts of Ranchi and Manbhum Districts. Mem. Geol. Surv. India, 1929, 54, 166.
- Dunn, J. A. and Dey, A. K., Geology and petrology of Eastern Singhbhum and surrounding areas. Mem. Geol. Surv. India, 1942, 69(2), 281–456.
- Rao, N. K. and Rao, G. V. U., Uranium mineralization in Singhbhum Shear Zone, Bihar. I. Ore mineralogy and petrography. J. Geol. Soc. India, 1983, 24, 437–454.
- Sarkar, S. C., Uranium (–nickel–cobalt–molybdenum) mineralization along the Singhbhum copper belt, India, and the problem of ore genesis. Miner. Deposita, 1982, 17(2), 257–278.
- Pal, D. C. and Rhede, D., Geochemistry and chemical dating of uraninite in the Jaduguda uranium deposit, Singhbhum Shear Zone, India – implications for uranium mineralization and geochemical evolution of uraninite. Econ. Geol., 2013, 108(6), 1499–1515.
- Sinha, K. K., Das, A. K., Sinha, R. M., Upadhyay, L. D., Pandey, P. and Shah, V. L., Uranium and associated copper nickel molybdenum mineralization in Singhbhum Shear Zone, Bihar, India: present status and exploration strategy. EARFAM, 1990. 3, 27–43.
- Mahadevan, T. M., In Geology of Bihar and Jharkhand, Text Book Series, Geological Society of India, Bangalore, 2000.
- Pandey, P., Kumar, P. and Upadhyay, L. D., Uranium deposits of Turamdih–Nandup area, Singhbhum district, Bihar and their spatial relationship. EARFAM, 1994, 7, 1–13.
- Saha, A. K., Crustal evolution of Singhbhum, North Orissa, Eastern India. Mem. Geol. Soc. India, 1994, 27, 341.
- Chaudhuri, T., Wan, Y., Mazumder, R., Mingzhu, M. and Liu, D., Evidence of enriched, Hadean mantle reservoir from 4.2–4.0 Ga zircon xenocrysts from Paleoarchean TTGs of the Singhbhum Craton, Eastern India. Nature, Sci. Rep., 2018, Article 7069, doi:10.1038/s41598-018-25494-6.
- Mukhopadhaya, D., The Archaean nucleus of Singhbhum: the present state of knowledge. Gondawana Res., 2001, 4, 307–318.
- Gupta, A. and Basu, A., North Singhbhum Proterozoic mobile belt Eastern India – a review. Geol. Surv. India, Spec. Publ., 2000, 55, 195–226.
- Acharyya, S. K., A plate tectonic model for Proterozoic Crustal evolution of Central Indian Tectonic Zone. Gondwana Geol. Mag., 2003, 7, 9–31.
- Mazumder, R., Eriksson, P. G., De, S., Bumby, A. J. and Lenhardt, N., Palaeoproterozoic sedimentation on the Singhbhum Craton: global context and comparison with Kaapvaal. Geol. Soc., London, Spec. Publ., 2012, 365, 49–74; http://dx.doi.org/10.1144/SP365.4.
- Banerji, A. K., Ore genesis and its relationship to volcanism, tectonism, granitic activity and metasomatism along the Singhbhum Shear Zone, Eastern India. Econ. Geol., 1981, 76, 905–912.
- Sarkar, S. C., Geology and ore mineralisation along the Singhbhum copper uranium belt, Eastern India. Jadavpur University, Calcutta, 1984, p. 263.
- Sarkar, S. N., Ghosh, D., Lambert, R. J., Rb–Sr and lead isotopic studies on the soda granites from Mosaboni, Singhbhum Copper Belt, Eastern India. J. Earth Sci., 1986, 13, 101–116.
- Sinha, D. K. and Verma, M. B., The uranium potential in the Singhbhum Shear Zone: future prospects. International Symposium by International Atomic Energy Agency, Extended Abstract, 2018, pp. 393–398.
- Nesbitt, H. W. and Young, G. M., Early Proterozoic climate and plate motions inferred from major element chemistry of lutiites. Nature, 1982, 299, 715–717.
- Le Bas, M. J., IUGS Re classification of the high Mg and picritic volcanic rocks. J. Petrol., 2000, 41(10), 1467–1470.
- Viljoen, M. J. and Viljoen, R. P., The geology and geochemistry of the lower ultramafic unit of the Onverwacht Group and a proposed new class of igneous rocks. Geol. Soc. S. Afr. Spec. Publ., 1969. 2, 55–86.
- Viljoen, M. J., Viljoen, R. P. and Pearton, T. N., The nature and distribution of Archaean komatiite volcanics in South Africa (eds Arndt, N. T. and Nisbet, E. G.), Allen and Unwin, London, 1982, pp. 53–79.
- Sun, S. S. and McDonough, W. F., Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes. Geol. Soc. London, Spec. Publ., 1989, 42, 313–345.
- Eby, G. N., Abundance and distribution of the rare-earth elements and yttrium in the rocks and minerals of the Oka carbonatite complex, Quebec. Geochim. Cosmochim. Acta, 1975, 39, 597–620.
- Uraninite-Bearing Leucosomes from Migmatites of Chhotanagpur Granite Gneiss Complex, Karke Area, Garhwa District, Jharkhand, India
Abstract Views :283 |
PDF Views:65
Authors
Affiliations
1 Atomic Minerals Directorate for Exploration and Research, Jaipur 302 033, IN
2 Atomic Minerals Directorate for Exploration and Research, Jamshedpur 831 001, IN
3 Atomic Minerals Directorate for Exploration and Research, New Delhi 110 066, IN
4 Atomic Minerals Directorate for Exploration and Research, Hyderabad 500 083, IN
1 Atomic Minerals Directorate for Exploration and Research, Jaipur 302 033, IN
2 Atomic Minerals Directorate for Exploration and Research, Jamshedpur 831 001, IN
3 Atomic Minerals Directorate for Exploration and Research, New Delhi 110 066, IN
4 Atomic Minerals Directorate for Exploration and Research, Hyderabad 500 083, IN
Source
Current Science, Vol 118, No 3 (2020), Pagination: 350-351Abstract
Uraninite, brannerite and secondary uranium minerals have been identified by petrographical studies of the leucosome of migmatites from Karke area, Garhwa district, Jharkhand (Figure 1). Secondary uranium minerals show fine flaky nature, anomalous interference colours and medium to high density alpha tracks on CN film. The host of uranium minerals is lensoidal in nature and occurs within the melanosome part of migmatitic band in Chhotanagpur Granite Gneiss Complex (CGGC)1. The width of migmatite varies from ~10 m to ~100 m, especially in Karke area. The migmatitic bands are flanked by pink granitoide occurring as linear body along the northern periphery. These are partially granitized metasediments and are the part of migmatites. These migmatites are hosted in biotite granite gneiss country with general trend of N65°W to S65°E, in this part of CGGC (Figure 1). A total of nine lenses of radioactive leucosome have been traced within a zone of 1000 m × 30 m trending NW–SE (Figure 2). The radioelemental distribution in these rocks is given in Table 1.Full Text
References
- Mahadevan, T. M., Geology of Bihar and Jharkhand, Geological Society of India, Bangalore, 2002, pp. 257–315.
- Mahendra Kumar, K., Bhattacharya, A. K., Gorikhan, A. K., Mathur, D. K. and Sengupta, B., Exploration and Research for Atomic Minerals, AMD, 1998, 11, 55–60.
- Uranium and Associated Polymetallic Mineralization in Palaeoproterozoic Khetabari Formation of Bomdila Group, Laggi Gamlin Area, West Siang District, Arunachal Pradesh, India
Abstract Views :227 |
PDF Views:74
Authors
Affiliations
1 Atomic Minerals Directorate for Exploration and Research, Shillong 793 019, IN
2 Atomic Minerals Directorate for Exploration and Research, Hyderabad 500 016, IN
1 Atomic Minerals Directorate for Exploration and Research, Shillong 793 019, IN
2 Atomic Minerals Directorate for Exploration and Research, Hyderabad 500 016, IN
Source
Current Science, Vol 119, No 4 (2020), Pagination: 603-606Abstract
No Abstract.Full Text
- Revisiting Ancient Indian Mathematics : Seeking Afresh Historical Perspectives
Abstract Views :129 |
PDF Views:2
Authors
Affiliations
1 Sir Rashbehary Ghose Professor of Applied Mathematics, University of Calcutta, IN
1 Sir Rashbehary Ghose Professor of Applied Mathematics, University of Calcutta, IN
Source
Indian Science Cruiser, Vol 23, No 1 (2009), Pagination: 39-43Abstract
No Abstract.- Whither Basics of Science: Attracting or Repelling?
Abstract Views :154 |
PDF Views:2
Authors
Source
Indian Science Cruiser, Vol 23, No 2 (2009), Pagination: 70-70Abstract
No Abstract.- Basics of learning: Equipping for Careers Process
Abstract Views :143 |
PDF Views:2
Authors
Source
Indian Science Cruiser, Vol 23, No 4 (2009), Pagination: 55-56Abstract
No Abstract.- Atomic minerals: journey of India to self-sufficiency
Abstract Views :189 |
PDF Views:118
Authors
Affiliations
1 Materials Group, Bhabha Atomic Research Centre, Mumbai 400 085, India
2 Atomic Minerals Directorate for Exploration and Research, Begumpet 500 016, India
3 Indian Rare Earths Limited (India), Prabhadevi 400 028, India
4 Uranium Corporation of India Ltd, Jaduguda 832 102, India
1 Materials Group, Bhabha Atomic Research Centre, Mumbai 400 085, India
2 Atomic Minerals Directorate for Exploration and Research, Begumpet 500 016, India
3 Indian Rare Earths Limited (India), Prabhadevi 400 028, India
4 Uranium Corporation of India Ltd, Jaduguda 832 102, India
Source
Current Science, Vol 123, No 3 (2022), Pagination: 293-309Abstract
Atomic minerals include mainly minerals containing uranium, thorium, rare metals, viz. niobium, tantalum, lithium, beryllium, titanium, zirconium, and rare earth elements (REEs) containing uranium and thorium as well as beach sand minerals. In India, these minerals are specified in Part B of the First Schedule to the Mines and Minerals (Development and Regulation) Act, 1957, and a few of these minerals containing uranium, thorium, niobium, tantalum and beryllium are included in the list of ‘Prescribed Substances’ under the Atomic Energy Act, 1962. After independence, different units of the Department of Atomic Energy have been playing a key role in making India self-reliant in these minerals and their processing. In the front end, the Atomic Minerals Directorate for Exploration and Research shoulders the responsibility for survey, exploration, and augmentation of atomic mineral(s) resources. The Uranium Corporation of India Limited is responsible for mining and processing of uranium ores, while the Indian Rare Earths (India) Limited caters to the mining of monazite-rich beach sands for recovery and processing of thorium and REEs. These three units of the DAE are ably supported by the Materials Group of Bhabha Atomic Research Centre, Mumbai, for technology development for mineral beneficiation and processing to produce metals/alloys/compounds required to support the requirements for expanding the nuclear power programme of India.Full Text
References
- Wadia, S. R., Homi Jegangir Bhabha and the Tata Institute of Fundamental Research. Curr. Sci., 2009, 96(5), 725–733.
- Government of India Notification No. F-402/DSR/48 – under clause 13 of the Atomic Energy Act, 1948.
- Bhabha, H. J. and Prasad, N. B., A study of the contributions of atomic energy to a power programme in India. In Proceedings of the Second United Nations International Conference on the Peaceful uses of Atomic Energy, International Atomic Energy Agency (IAEA), Geneva, 1958, vol. 1, pp. 89–101.
- Chaudhuri, N. P., Story of GSI, 1851–2001. Geological Survey of India, Commemor. vol. 150th Anniversary Celebrations of GSI, 2001, pp. 159–160.
- Derriks, J. J. and Vaes, J. F., The Shinkolobwe uranium deposit: current status of our geological and metallogenic knowledge. In Proceedings of the International Conference on the Peaceful Uses of Atomic Energy, United Nations, New York, USA, 1956, pp. 94–128.
- Sims, P. K. and Sheridan, D. M., Geology of uranium deposits in the Front Range, Colorado. US Geol. Surv. Bull., 1964, 1159, 116.
- Fermor, L., The mineral resources of Bihar and Orissa. Rec. Geol. Surv. India, 1921, 53, 239–319.
- Khedkar, V. R., Report on the iso-rad survey and prospecting for uranium in the belt of uraniferous rocks in Singhbhum district, Bihar. Field Season Report for 1950–51. Un published RMSU (AEC) Report, 1951.
- Vasudeva, S. G., Preliminary geological observations on the drill cores in Singhbhum thrust belt. In Proceedings of the Symposium on Uranium Prospecting and Mining in India – 1964 (ed. Rama Rao, Y. N.), Jaduguda, Bihar (now Jharkhand), 1965, pp. 88–95.
- Bhola, K. L., Radioactive deposits of India. In Symposium on Uranium Prospecting and Mining in India, Department of Atomic Energy, Jaduguda, 1965, pp. 1–41.
- Bhola, K. L., Rama Rao, Y. N., Sastry, C. S. and Mehta, N. R., Uranium mineralisation in the Singhbhum Thrust Belt, Bihar India. Econ. Geol., 1966, 61, 162–173.
- Saraswat, A. C., Uranium exploration in India: perspectives and strategy. J. Expl. Res. Atomic Min., India, 1988, 1, 1–11.
- Kaul, R., Yadava, R. S., Gupta, K. R., Singh, G. and Bahuguna, R., Structure and uranium mineralisation in the Proterozoic Aravalli Supergroup of Umra area, Udaipur district, Rajasthan, India. J. Expl. Res. Atomic Min., India, 1991, 4, 13–25.
- Udas, G. R. and Mahadevan, T. M., Controls and genesis of uranium mineralisation in some geological environments in India. In Proceedings of the Symposium on Formation of Uranium Ore Deposits, International Atomic Energy Agency (IAEA), Vienna, 1974, pp. 425–436.
- Saraswat, A. C., Uranium resources for India’s nuclear power programme – overview. In Proceedings of IAEA Technical Committee Meeting on Assessment of Uranium Resources and Supply, IAEA-TECDOC-597, Vienna, Austria, 29 August–1 September 1989, pp. 109–120.
- Saraswat, A. C., Rishi, M. K., Gupta, R. K. and Bhaskar, D. V., Recognition of favourable uraniferous area in sediments of Meghalaya, India. In Proceedings of the Symposium on Recognition and Evaluation of Uraniferous Areas, International Atomic Energy Agency, Vienna, Austria, 1977, pp. 165–181.
- Phadke, A. V., Mahadevan, T. M., Narayan Das, G. R. and Saraswat, A. C., Uranium mineralisation in some Phanerozoic sandstones in India. International Atomic Energy Agency, IAEA-TECDOC-328, Vienna, Austria, 1985, pp. 121–134.
- Sengupta, B., Bahuguna, R., Kumar, S., Singh, R. and Kaul, R., Discovery of sandstone type uranium deposit at Domiasiat, West Khasi Hills District, Meghalaya, Northeast India. Curr. Sci., 1991, 61, 46–47.
- Sundaram, S. M., Sinha, P. A., Ravindra Babu, B. and Muthu, V. T., Uranium mineralisation in Vempalle dolomite and Pulivendla conglomerate/quartzite of Cuddapah Basin, Andhra Pradesh. Indian Miner., 1989, 43(2), 98–103.
- Vasudeva Rao, M., Nagabhushana, J. C. and Jeyagopal, A. V., Uranium mineralisation in the middle Proterozoic carbonate rocks of the Cuddapah Super Group, Southern Peninsular India. J. Expl. Res. Atomic Min., India, 1989, 2, 29–38.
- Suri, A. K., Ghosh, S. K. and Padmanabhan, N. P. H., Recent pilot-plant experience on alkaline leaching of low grade uranium ore in India. In International Symposium on Uranium Raw Material for Nuclear Fuel Cycle (URAM 2009), IAEA-CN-175/65, IAEA, Vienna, Austria, 22–26 June 2009, pp. 231–246.
- Suri, A. K. et al., Process development studies for the recovery of uranium and sodium sulphate from a low-grade dolostone hosted stratabound type uranium ore deposit. Miner. Process. Extract. Metall., 2014, 123(2), 104–115.
- Rai, A. K., Zakaulla, S. and Anjan, C., Proterozoic stratabound carbonate rock (dolostone) hosted uranium deposits in Vempalle formation in Cuddapah basin, India. In: International Symposium on Uranium Raw Material for the Nuclear Fuel Cycle: Exploration, Mining, Production, Supply and Demand, Economics and Environmental Issues (URAM-2009), IAEA-CN-175/27, IAEA, Vienna, Austria, 22–26 June 2009, p. 95.
- Gupta, R., Technical developments in uranium mining and milling in India. In International Symposium on Uranium Raw Material for the Nuclear Fuel Cycle: Exploration, Mining, Production, Supply and Demand, Economics and Environmental Issues (URAM-2009), IAEA-CN-175/63, IAEA, Vienna, Austria, 22–26 June 2009, p. 35.
- Sinha, R. M., Shrivastava, Y. K., Sarma, G. Y. G. and Parthasarathy, T. N., Geological favourability for unconformity-related uranium deposits in the northern parts of the Cuddapah basin: evidence from Lambapur uranium occurrences, Andhra Pradesh, India. J. Expl. Res. Atomic Min., India, 1995, 8, 111–126.
- Nanda, L. K., Katti, V. J. and Maithani, P. B., Prospects and potentialities for uranium in North Delhi Fold Belt: a case study from Rohil, Rajasthan, India. In International Symposium on Uranium Raw Material for the Nuclear Fuel Cycle: Exploration, Mining, Production, Supply and Demand, Economics and Environmental Issues (URAM-2009), IAEA-CN-175/26, IAEA, Vienna, Austria, 22–26 June 2009, p. 97.
- Mishra, B., Kumar, K., Khandelwal, M. K. and Nanda, L. K., Uranium mineralization in the Khetri Sub-Basin, North Delhi Fold Belt, India. In International Symposium on Uranium Raw Material for the Nuclear Fuel Cycle: Exploration, Mining, Production, Supply and Demand, Economics and Environmental Issues (URAM-2018), Vienna, Austria, 25–29 June 2018, pp. 285–288.
- Achar, K. K., Pandit, S. A., Natarajan, V., Kumar, Mary, K. and Dwivedy, K. K., Uranium mineralisation in the Neoproterozoic Bhima Basin, Karnataka, India. In Recent Developments in Uranium Resources. Production and Demand, IAEA, Vienna, Austria, 1997, pp. 1–22.
- Chaki, A., Panneerselvam, A. and Chavan, S. J., Uranium exploration in the Upper Proterozoic Bhima Basin, Karnataka, India: a new target area. In IAEA Proceeding Series, Uranium Production and Raw Materials for the Nuclear Fuel Cycle – Supply and Demand, Economics, the Environment and Energy Security, 2005, pp. 183–194.
- Roy, D., Bhattacharya, D., Mohanty, Patnaik, S., Pradhan, A. K., Chakrabarty, K. and Zakaullah, S., Deformation pattern in Gogi–Kurlagere fault zone at Gogi–Kanchankayi sector of Proterozoic Bhima Basin of northern Karnataka: implication in control of uranium mineralization. J. Expl. Res. Atomic Min., India, 2016, 26, 157–176.
- Uranium 2020: Resources, Production and Demand, Joint Biennial Report NEA and IAEA, NEA No. 7551, © OECD-2020, 2020, pp. 237–249.
- Pandit, S. A., Natarajan, V. and Dhana Raju, R., Exploration for uranium in the Bhima Basin in parts of Karnataka, India. J. Expl. Res. Atomic Min., India, 2002, 14, 29–58.
- Sinha, D. K., Gupta, S., Nautiyal, K., Akhila, V. R., Shrivastava, V. K., Padhi, A. K. and Verma, M. B., Serpentinized peridotite-hosted uranium mineralisation (U–Cr–Ni–Mo–REE–Fe–Mg) in Kudada–Turamdih area: a new environment of metallogeny in Singhbum Shear Zone, India. Curr. Sci., 2019, 117(5), 830–838.
- Ray, S. K., Mineral potential of the albitite line of Rajasthan, Geol. Surv. India, Spec. Publ., 2004, 72, 487–496.
- Kumar, P., Panigrahi, B. and Joshi, G.B., Palaeochannel controlled cretaceous sandstone-type uranium deposit of Lostoin area, Mahadek Basin, Meghalaya. J. Geol. Soc. India, 2016, 87, 424–428.
- Gupta, R. and Sarangi, A. K., Overview of Indian uranium production scenario in coming decades. Energy Procedia, 2011, 7, 146–152.
- Gupta, R. and Sarangi, A. K., Emerging trend of uranium mining: the Indian scenario. In IAEA Symposium on Uranium Production and Raw Materials for the Nuclear Fuel Cycle – Supply and Demand, Economics, the Environment and Energy Security, IAEA-CN-128/6, IAEA, Vienna, Austria, 20–24 June 2005.
- Gupta, R. and Sarangi, A. K., Uranium mining potential of India. Indian Min. J., 2008, 47(10), 55–59.
- IREL, Rare Earth in India – The Incredible Voyage of Endurance, Indian Rare Earths Limited (India), Mumbai, 2020.
- Mahadevan, C. and Sriramdas, A., Monazite in the beach sands of Visakhapatnam district. Proc. Indian Acad. Sci., 1948, 27(A), 275–278.
- Vishwanathan, P., Studies on Travancore beach sands. J. Ind. Min., Spec. Issue, 1957, 109–122.
- Rao, G. D., Shetty, B. K. and Rami Naidu, Ch., Heavy minerals content and textural characteristics of coastal sands in Krishna, Godavar, Gosthani, Champavathi and Pennar River deltas of Andhra Pradesh: a comparative study. J. Expl. Res. Atomic Min., India, 1989, 2, 147–155.
- Ali, M. A., Krishnan, S. and Banerjee, D. C., Beach and inland heavy mineral sand investigations and deposits in India – an overview. J. Expl. Res. Atomic Min., India, 2002, 13, 1–21.
- Bhabha, H. J., The role of atomic power in India and its immediate possibilities. In Proceedings of the International Conference on the Peaceful uses of Atomic Energy, Geneva, 1955, vol. 1, pp. 103–109.
- Bhabha, H. J., The need for atomic energy in the under-developed countries. In Proceedings of the Second United Nations International Conference on the Peaceful uses of Atomic Energy, Geneva, 1958, vol. 1, pp. 395–407.
- Sinha, D. K., Atomic Minerals Directorate for Exploration and Research. Institutional Report. Proc. Indian Natl. Sci. Acad., 2020, 86(1), 755–758.
- IREL, Annual Report 1951–52, Indian Rare Earths Limited, Mumbai, 1952.
- IREL, Annual Report 1952–53, Indian Rare Earths Limited, Mumbai, 1953.
- IREL, Annual Report 1958–59, Indian Rare Earths Limited, Mumbai, 1959.
- IREL, Annual Report 1988–89, Indian Rare Earths Limited, Mumbai, 1989.
- IREL, Annual Report 1964–65, Indian Rare Earths Limited, Mumbai, 1965.
- IREL, Annual Report 2015–16, Indian Rare Earths Limited, Mumbai, 2016.
- Sinha, D. K., Emerging concepts in uranium exploration in India: an overview and way forward. In Vietnam Conference on Nuclear Science and Technology (VINANST-14). IAEA-CN-175/65, Vietnam Atomic Energy Institute and the Department of Science and Technology of Lam Dong Province, Da Lat city, Vietnam, 9–10 December 2021.
- GSI-AMD, Strategic plan for enhancing REE exploration in India, 2020; https://amd.gov.in/WriteReadData/userfiles/file/GSI_AMD_Vision_Document_REE.pdf
- Thorat, D. D., Tripathi, B. M. and Sathiyamoorthy, D., Extraction of beryllium from Indian beryl by ammonium hydrofluoride. Hydrometallurgy, 2011, 109, 18–22.
- Saha, S., Hydrometallurgy of beryllium in the Indian perspective. Miner. Process. Extract. Metall. Rev., 1994, 13, 43–52.
- Sharma, B. P. and Sivasubramanian, N., Processing of beryllium for high technology applications. Miner. Proc. Extract. Metall. Rev., 1994, 13, 229–242.
- Banerjee, D. C., Krishna, K. V. G., Murthy, G. V. G. K., Srivastava, S. K. and Sinha, R. P., Occurrence of spodumene in the rare metal bearing pegmatites of Marlagalla–Allapatna area, Mandya district, Karnataka. J. Geol. Soc. India, 1994, 44, 127–139.
- Ramesh Babu, P. V., Rare metal and rare earth pegmatites of Central India. J. Expl. Res. Atomic Min. India, 1999, 14, 59–78.
- Banerjee, D. C., Rare metal and rare earth pegmatites of India: an overview and some perspectives. J. Expl. Res. Atomic Min., India, 1999, 12, 1–6.
- Ramachar, T. M., Shivananda, S. R., Dwivedy, K. K. and Jayaram K. M. V., The rare metal and REE occurrences in South Bastar, Madhya Pradesh. Geol. Surv. India, Spec Publ., 1979, 13, 104–107.
- Banerjee, D. C., Ranganathan, N., Maithani, P. B. and Jayaram, K. M. V., Rare metal bearing pegmatites in parts of southern Karnataka, India. J. Geol. Soc. India, 1987, 30, 507–513.
- Jena, P. K., Gupta, C. K. and Taneja, A. K., The present status and the projected programme on niobium–tantalum metallurgy in India. National Metallurgical Laboratory, Jamshedpur, 1969, vol. 3, pp. 173–180.
- Bose, D. K., Pyrometallurgy of niobium, tantalum and vanadium – development work at Bhabha Atomic Research Centre. Min. Process. Extract. Metall. Rev., 1992, 10(1), 217–237.
- Anomalous uranium concentration in tourmaline-bearing leucogranite of Higher Himalaya, Nuranang, Tawang district, Arunachal Pradesh, North East India
Abstract Views :80 |
PDF Views:55
Authors
Affiliations
1 Atomic Minerals Directorate for Exploration and Research, Hyderabad 500 016, India, IN
2 Atomic Minerals Directorate for Exploration and Research, Nagpur 400 001, India, IN
3 House No. 171, Swami Colony, Phase 1, Akar Nagar, Katol Road, Nagpur 440 013, India, IN
4 Flat 511, Block Garnet (E), Rainbow Vista@Rock Garden, Moosapet, Hyderabad 500 018, India, IN
1 Atomic Minerals Directorate for Exploration and Research, Hyderabad 500 016, India, IN
2 Atomic Minerals Directorate for Exploration and Research, Nagpur 400 001, India, IN
3 House No. 171, Swami Colony, Phase 1, Akar Nagar, Katol Road, Nagpur 440 013, India, IN
4 Flat 511, Block Garnet (E), Rainbow Vista@Rock Garden, Moosapet, Hyderabad 500 018, India, IN
Source
Current Science, Vol 124, No 2 (2023), Pagination: 253-257Abstract
Here we report anomalous uranium concentration in tourmaline-bearing leucogranite occurring at Nuranang, Tawang district, Arunachal Pradesh, North East India. The leucogranite occurs as concordant layers parallel to gneissic foliation, similar to the gneisses of the Palaeoproterozoic Se La Group. It is medium to coarse-grained, and is composed of quartz, potash feldspar and plagioclase as dominant minerals with variable proportions of muscovite, biotite, tourmaline and garnet. Apatite, zircon and pyrite are accessory minerals. Geochemically, the leucogranite is alkali-rich, peraluminous and highly differentiated. It is emplaced in a syn to late orogenic collision tectonic setting. Analyses of 10 granite samples collected at 500 m intervals show relatively high radioelemental concentration (U: 5–96 ppm, Th: 5–23 ppm, K: 2.23–7.72% and Th/U; 0.07–1.00, n = 10) compared to normal granite. Anomalous uranium concentration in the leucogranite is observed in a 200 m ´ 50 m area at Nuranang. Samples from this area have assayed 0.016–0.029% U3O8 and <0.005% ThO2. Leachable U3O8 content determined in five samples varies from 81.25% to 87.50%. Preliminary studies indicate that uranium is in the adsorbed state associated with iron oxide and altered feldspar/clay. The findings of anomalous uranium concentration in tourmaline-bearing leucogranite likely open up a new target area for uranium search in the Higher Himalaya of Arunachal PradeshFull Text