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Verma, M. B.
- LREE–Nb Mineralization in the South Western Part of Ambadongar Carbonatite Complex, Chhota Udepur District, Gujarat, India
Abstract Views :573 |
PDF Views:80
Authors
B. Nagabhushanam
1,
S. Durai Raju
2,
K. L. Mundra
3,
S. D. Rai
1,
R. K. Purohit
1,
M. B. Verma
1,
L. K. Nanda
1
Affiliations
1 Atomic Minerals Directorate for Exploration and Research, Hyderabad 500 016, IN
2 Atomic Minerals Directorate for Exploration and Research, Beach Sand and Offshore Investigations, Thiruvananthapuram 695 012, IN
3 Atomic Minerals Directorate for Exploration and Research, Western Region, Jaipur 302 033, IN
1 Atomic Minerals Directorate for Exploration and Research, Hyderabad 500 016, IN
2 Atomic Minerals Directorate for Exploration and Research, Beach Sand and Offshore Investigations, Thiruvananthapuram 695 012, IN
3 Atomic Minerals Directorate for Exploration and Research, Western Region, Jaipur 302 033, IN
Source
Current Science, Vol 114, No 08 (2018), Pagination: 1608-1610Abstract
The Ambadongar sub-volcanic carbonatite alkali complex is located about 140 km east of Vadodara, Chhota Udepur district, Gujarat, India and falls in Survey of India Toposheet No. 46 K/1. The complex intrudes Bagh sandstone (Cretaceous) and overlying Deccan basalts (Eocene) and is situated in the Narmada rift zone. The carbonatites came into prominence in the early 1960s with significant discoveries of fluorite and conspicuous radioactivity located near Chhota Udepur, at Ambadongar, the erstwhile Baroda district, Gujarat. Earlier workers have clarified many aspects of the carbonatite complex.Full Text
References
- Viladkar, S. G. and Dulski, P., N. Jb. Miner. Mh. Jg., 1986, 37–48.
- Sukheswala, R. N. and Udas, G. R., Sci. Cult., 1963, 29, 563–568.
- Subramaniam, A. P. and Parimoo, M. L., Nature, 1963, 198, 563–564.
- Viladkar, S. G., In International Carbonatite Workshop, GMDC Science & Research Centre, Ahmedabad, 5–11 December 1996, pp. 1–66.
- Viladkar, S. G., Bull. Geol. Soc. Finland, 1981, 17–28.
- Doroshkevich, A. G., Viladkar, S. G., Ripp, G. S. and Burtseva, M. V., Can. Mineral., 2009, 47, 1105–1116.
- Viladkar, S. G., In Geochemistry–Earths System Processes (ed. Panagiotaras, D.), 2012, pp. 485–500.
- Van Gosen, B. S., Open File Report 2009-1005, U.S. Department of the Interior and US Geological Survey, 2009, pp. 1–27.
- Uranium Mineralization in Metasediments of North Delhi Fold Belt of Buchara Area, Jaipur District, Rajasthan, India
Abstract Views :276 |
PDF Views:82
Authors
Affiliations
1 Atomic Minerals Directorate for Exploration and Research, Hyderabad 500 016, IN
2 Atomic Minerals Directorate for Exploration and Research, Western Region, Jaipur 302 033, IN
1 Atomic Minerals Directorate for Exploration and Research, Hyderabad 500 016, IN
2 Atomic Minerals Directorate for Exploration and Research, Western Region, Jaipur 302 033, IN
Source
Current Science, Vol 114, No 12 (2018), Pagination: 2437-2439Abstract
The Proterozoic Delhi Supergroup rocks of North Delhi Fold Belt (NDFB) is one of the prime targets for base metals, uranium and other economic mineral prospects.Full Text
References
- Khandelwal, M. K., Jain, R. C., Dash, S. K., Padhi, A. K. and Nanda, L. K., Mem. Geol. Soc. India, 2010, 76, 75–85.
- Yadav, O. P., Hamilton, S., Vimal, R., Saxena, V. P., Pande, A. K. and Gupta, K. R., Explor. Res. At. Miner., 2002, 14, 109–130.
- Padhi, A. K. et al., Explor. Res. At. Miner., 2016, 26, 53–70.
- Sinha-Roy, S., Malhotra, G. and Mohanti, M., Geological Society of India, Geology of Rajasthan, 1998, 1st edn, p. 278.
- 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.
- Uranium Mineralization in Kappatralla Outlier of Gulcheru Quartzite Formation, Mesoproterozoic Cuddapah Supergroup, Kurnool District, Andhra Pradesh, India
Abstract Views :263 |
PDF Views:89
Authors
Affiliations
1 Atomic Minerals Directorate for Exploration and Research, Department of Atomic Energy, Hyderabad 500 016, IN
1 Atomic Minerals Directorate for Exploration and Research, Department of Atomic Energy, Hyderabad 500 016, IN
Source
Current Science, Vol 116, No 8 (2019), Pagination: 1294-1298Abstract
In the eastern Dharwar craton, the crescent- shaped Cuddapah Basin forms a large intracratonic basin, comprising Meso–Neoproterozoic sedimentary sequence with volcanic rock components. The sedimentary environment of the Cuddapah Basin, in general, is comparable with peri-tidal complex with shallow marine carbonate shelf and beach environment. Systematic geological studies of the Cuddapah Basin are well documented1,2. The litho-units of the basin are mainly divided into older Cuddapah Supergroup and a younger Kurnool Group. The former is present throughout the basin, while the younger group is seen in its western and northeastern parts. The sediments of the basin overlie the Late Archaean–Lower Proterozoic granitoids intruded by basic and ultrapotassic dykes.Full Text
References
- King, W., Mem. Geol. Surv. India, 1872, 8, 346.
- Nagaraja Rao, B. K., Rajurkar, S. T., Ramalinga Swamy, G. and Ravindar Babu, B., Mem. Geol. Soc. India, 1987, 6, 33–86.
- Umamaheswar, K., Basu, H., Patnaik, J. K., Ali, M. A. and Banerjee, D. C., J. Geol. Soc. India, 2001, 57, 405–409.
- Dwivedi, A. K., Hegde, G. N. and Umamaheswar, K., J. Geol. Soc. India, 2006, 67, 197–200.
- Bhopal Reddy, A. and Rao, K. S., District Resource Map of Kurnool district, AP, Geological Survey of India, 1999,
- Darnley, A. G., In Uranium in Granites, (ed. Maurice, Y. T.), Geological Survey of Canada, 1982, Paper 81-23, pp. 1–10.
- Steenfelt, A., Mineral. Mag., 1982, 46, 149–161.
- William, P. F. and Rust, B. R., J. Sediment. Petrol., 1969, 39, 649–679.
- Reineck, H. E. and Singh, I. B., Depositional Sedimentary Environments, SpringerVerlag, 1973, p. 439, ISBN 3-54006115-0.
- Dickinson, W. R. et al., Geol. Soc. Am. Bull., 1983, 64, 233–235.
- Leder, F. and Park, W. C., Am. Assoc. Petrol. Geol. Bull., 1986, 70, 1713–1728.
- Breger, I. A. and Deul, M., International Conference on Peaceful Uses of Atomic Energy (Proceedings of Conference Geneva, 1955–56), UN, New York, USA, 1956, p. 418.