Neo-Proterozoic Siwana Ring Complex (SRC) comprises per alkaline rocks of Malani Igneous Suite, viz., rhyolite, granite, and late phase microgranite and felsite dykes. Phulan area, lying at the northeastern margin of SRC exposes a small body of rhyolite (<1.0 km2) containing feldspar + quartz + aegirine + rebeckite and is cut by dykes of felsite. These felsite dykes have a general NNW–SSE trend and vary from 60–200 m long and 0.10–2.50 m wide. These dykes are composed of quartz, alkali feldspar, aegirine and opaques. These felsite dykes were sampled and analyzed using inductively coupled plasma methods. Of special significance is the enrichment of trace elements and rare earth elements (REE) in the felsite dykes. These include up to 1.17% Ce, 0.6% La, 0.8% Y, 0.12% Dy, 169.25 ppm U, 571 ppm Th, 1385 ppm Nb, 9944 ppm Zr. These dykes are peralkaline in nature and show negative europium (Eu) anomaly. In this study, the authors attempted to characterize REE bearing phases of the felsite dykes of Phulan area, SRC with respect to their geneiss. REE bearing phases identified in felsite dykes are monazite, bastnaesite, parisite, eudiyalite, allanite, perreierite and tritomite. Monazite, perreierite, allanite and tritomite are mostly found to be of magmatic in origin whereas bastnaesite, parasite and eudiyalytes occur both as magmatic and as well as of hydrothermal types. Magmatic REE minerals are mostly formed during crystallization of REE rich magma. In felsite dykes, Zr/Hf ratio varies from 23 to 31 and Nd/Ta ratio ranges from 7 to 44. These two ratios are positively correlated and indicators of hydrothermal fluid influx.
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Agangi A, Kamenetsky V S and McPhie J 2010 The role of fluorine in the concentration and transport of lithophile trace elements in felsic magmas: Insights from the Gawler Range Volcanics, South Australia; Chem. Geol. 273 314–325.
Andersen T 1986 Magmatic fluids in the Fen complex, SE Norway. Evidence of mid-crustal fractionation from solid and fluid inclusions in apatite; Contrib. Mineral. Petrol. 93 491–503.
Andrade F R D, Moller P, Luders V, Dulski P and Gilg H A 1999 Hydrothermal rare earth elements mineralization in the Barra do Itapirauã carbonatite, southern Brazil: Behaviour of selected trace elements and stable isotopes (C, O); Chem. Geol. 155 91–113.
Balashov Y U A and Krigman L D 1975 The effects of alkalinity and volatiles on rare-earth separation in magmatic systems; Geochem. Int. 12(6) 165–170.
Bau M 1996 Controls on the fractionation if isovalent trace elements in magmatic and aqueous fluids: Evidence from Y/Ho, Zr/Hf, and lanthanide tetrad effect; Contrib. Mineral Petrol. 123 323–333.
Bhushan S K 1995 Late proterozoic continental growth: Implications from geochemistry of acid magmatic events of west Indian craton, Rajasthan; Geol. Soc. India Memoir 34 339–355.
Bhushan S K and Kumar A 2013 First carbonatite hosted REE deposit from India; J. Geol. Soc. India 81 41–60.
Bhushan S K and Chittora V K 1999 Late Proterozoic bimodal assemblage of Siwana subsidence structure, western Rajasthan, India; J. Geol. Soc. India 53 433–453.
Bhushan S K and Mohanty M 1988 Mechanics of intrusion and geochemistry of alkaline granites from Siwana, Barmer district, Rajasthan; Ind. J. Earth Sci. 15 103–115.
Bidwai R, Srinavasan S, Nanda L K, Banerjee A, Bangroo P N, Rai A K and Parihar P S 2014 Anomalous silver concentration in volcano-plutonic rocks of Siwana Ring Complex, Barmer district, western Rajasthan; Curr. Sci. 106 159–162.
Bilal B A and Becker P 1979 Complex formation of trace elements in geochemical systems. II: Stability of rare earths fluoro complexes in fluorite bearing model system at various ionic strength; J. Inorg. Nucl. Chem. 41 1607–1608.
Bulakh A G, Le Bas M J, Wall F and Zaitsev A N 1998 Ancylite-bearing carbonatites of the Seblyavr massif, Kola peninsula, Russia; Neues Jahrb. Mineral. Monatsh. 4 171–192.
Chahmouradin A and Zaitsav A N 2012 Rare earth mineralization in igneous rocks: Source and Processes; Elements 8 347–353.
Chen Y X and Zheng Y F 2015 Extreme Nb/Ta fractionation in metamorphic titanite from ultrahigh-pressure metagranite; Geochim. Cosmochim. Acta 150 53–73.
Claiborne L L, Miller C F, Walker B A, Wooden J L, Mazdab F K and Bea F 2006 Tracking magmatic processes through Zr/Hf ratios in rocks and Hf and Ti zoning in zircons: An example from the Spirit Mountain batholith, Nevada; Mineral. Mag. 70 517–543.
Das U K, Gantait A, Panda L and Hussain S 2016 Rare earth element potential of the felsite dykes of Phulan area, Siwana Ring Complex, Rajasthan, India; Curr. Sci. 110 1157–1162.
Deer W A, Howie R A and Zussman J 1986 Rock forming minerals, vol 1B: Disilicates and Ringsilicates (2nd edn), Longman, Horlow, United Kingdom.
De La Roche H, Leterrier J, Grandclaude P and Marchal M 1980 A classification of volcanic and plutonic rocks using R1R2-diagram and major element analyses – its relationships with current nomenclature; Chem. Geol. 29 183–210.
Dostal J 2017 Rare earth element deposits of alkaline igneous rocks; Resources 6 34.
Dostal J and Chatterjee A K 2000 Contrasting behaviour of Nb/Ta and Zr/Hf ratios in a peraluminous granitic pluton (Nova Scotia, Canada); Chem. Geol. 163 207–218.
Eby G N and Kochhar N 1990) Geochemistry and petrogenesis of the Malani Igneous Suite, northern India; J. Geol. Soc. India 36 109–130.
Flynn R T and Burnham C W 1978 An experimental determination of rare earth partition coefficients between a chloride containing vapor phase and silicate melts; Geochim. Cosmochim. Acta 42 685–701.
Hogarth D D, Hartree R, Loop J and Solberg T N 1985 Rare-earth element minerals in four carbonatites near Gatineau, Quebec; Am. Mineral. 70 1135–1142.
Hui H, Niu Y, Zhidan Z, Huixin H and Dicheng Z 2011 On the enigma of Nb–Ta and Zr–Hf fractionation: A critical review; J. Earth Sci. 22 52–66.
Jain R B, Miglani T S, Kumar S, Swarnkat B M and Singh R 1996 Rare metal and rare earth rich peralkaline, agpaitic granitoid dykes of Siwana Ring Complex, District Barmer, Rajasthan; Curr. Sci. 70 854–858.
John T, Klemd R, Klemme S, Pfander J A, Hoffmann J E and Gao J 2011 Nb–Ta fractionation by partial melting at the titanite-rutile transition; Contrib. Mineral. Petrol. 161 35–45.
Kochhar N 1992 Mineralization associated with A-type Malani magmatism, northwestern peninsular India; In: Metallogeny related to tectonic of the Proterozoic mobile belts (ed.) S C Sarkar, Oxford IBH, New Delhi, pp. 209–224.
Kochhar N 2000 Attributes and significance of the A-type Malani magmatism, northwestern peninsular India; In: Crustal evolution and metallogeny in the northwestern India Shield (ed.) M Deb, Narosa Publishers, New Delhi, pp. 158–188.
Kogarko L N, Lazutkina L N and Romanchev B P 1982 The origin of eudialyte mineralization; Geochem. Int. 19 128–145.
Linnen R L and Keppler H 2002 Melt composition control of Zr/Hf fractionation in magmatic processes; Geochim. Cosmochim. Acta 66 3293–3301.
Maheshwari A, Sial A N, Coltorti M, Chittora V K and Cruz M J M 2001 Geochemistry and petrogenesis of Siwana Peralkaline Granites, West of Barmer, Rajasthan, India; Gondwana Res. 4(1) 87–95.
Macdonald R and Belkin H E 2002 Compositional variation in minerals of the chevkinite group; Mineral. Mag. 66 1075–1098.
McDonough W F and Sun S S 1995 The composition of the Earth; Chem. Geol. 120 223–253.
Middlemost E A K 1994 Naming materials in magma/igneous rock system; Earth Sci. Rev. 37 215–224.
Mohanty M and Bhushan S K 2004 Neoproterozoic Peralkaline Siwana granite, Barmer district, Rajasthan and its potential for Rare earth element mineralization; Geol. Surv. India, Spec. Publ. 72 363–376.
Moller P 1986 Rare earth mineral deposits and their industrial importance; In: Lanthanides, Tantalum and Niobium (eds) Moller P, Cerny and Saupe F, Proceedings of a workshop in Berlin, November 1986, Springer-Verlag.
Nakamura N 1974 Determination of REE, Ba, Fe, Mg, Na and K in carbonaceous and ordinary chondrite; Geochim. Cosmochim. Acta 38 757–775.
Pearce J A, Harris N B W and Tindle A G 1984 Trace element discrimination diagrams for the tectonic interpretation of granitic rocks; J. Petrol. 25 956–983.
Rastogi S K, Mukherjee T and Gupta G P 2015 Flow stratigraphy, geochemistry and REE mineralization in northern part of the Siwana Ring Complex in Malani Igeneous Suite (MIS), Barmer district, Rajasthan, Recent Development in Metallogeny and Mineral Exploration in Rajasthan; Geol. Surv. India, Spec. Publ. 101 207–217.
Samson I M and Wood S A 2004 The rare earth elements: Behavior in hydrothermal fluids and concentration in hydrothermal mineral deposits, exclusive of alkaline settings; In: Rare-Element Geochemistry and Mineral Deposits (ed.) Geological Association of Canada, Short Course Notes, 17, pp. 269–298.
Shand S J 1943 Eruptive rocks: Their genesis, composition, classification and their relation to ore deposits with a chapter on meteorite; New York: John Wiley and Sons.
Singh A K and Vallinayagam G 2009 Radioactive element distribution and rare-metal mineralization in anorogenic acid volcano-plutonic rocks of the Neoproterozoic Malani felsic province, western peninsular India; J. Geol. Soc. India 73 837–853.
Singh L S and Vallinayagam G 2013 Geochemistry and petrogenisis of acid volcano-plutonic rocks of the Siner area, Siwana Ring Complex, northwestern peninsular India, J. Geol. Soc. India 82 67–79.
Sokolov S V 2005 Physical and chemical conditions for ore-formation of carbonatites; Explor. Conser. Res. 4 29–32 (in Russian).
Vallinayagam G 1988 Geology and geochemistry of alkali granites and the associated acid volcanics around Mokalsar, District Barmer, west Rajasthan, India and their bearing on rift tectonics; Unpublished Ph.D. thesis, Panjab University, Chandigarh, 113p.
Vallinayagam G and Kochhar N 1998 Geochemical characteristic and petrogenesis of A-type granite and the associated acid volcanic of the Siwana ring complex, northern peninsular, India; In: The Indian Precambrian (ed.) B S Paliwal, Scientific Publisher, Jodhpur, pp. 460–481.
Vallinayagam G 2001 Geochemistry and petrogenesis of basic rocks in the Siwana ring complex, Barmer district, Rajasthan, India; Indian Minerals 35 121–133.
Vallinayagam G 2004 A report on rare metals and rare earths in the Siwana ring complex, Rajasthan; J. Appl. Geochem. 6(2) 387–391.
Verplank P L, Van Gossen B S, Seal R R and McCafferty A E 2010 A deposit model for carbonatite and peralkaline intrusion related rare earth element deposit; Chapter J of Mineral Deposit models for Resource Assessment, Scientific Investigation Report 2010-5070-J.
Wilson M 1989 Igneous petrogenesis: A global tectonic approach; Unwin Hyman, London, 466p.
Zaitsev A N 1996 Rhombohedral carbonates from carbonatites of the Khibina Massif, Kola Peninsula, Russia; Can. Mineral. 34 453–468.
The authors express their gratitude to Shri. Brij Kumar, Additional Director General and HOD for giving permission and continuous encouragement for publishing the article. The authors also express their profound gratefulness to Dr N P Nathan, Deputy Director General (Retd.) and Dr Shabbir Hussain, Deputy Director General (Retd.) for their close supervision, continuous encouragement and valuable suggestions during the project. Authors also thank the anonymous reviewer for his valuable suggestions to improve the manuscript. UKD and AG also thank all the officers of Regional Chemical Laboratory, GSI, Jaipur and EPMA Laboratory, Faridabad for their expertise and guidance during analysis process.
Communicated by N V Chalapathi Rao
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Das, U.K., Gantait, A. REE mineral chemistry and the nature of REE mineralization: A study from felsite dykes of Phulan area, Siwana Ring Complex, Rajasthan, India. J Earth Syst Sci 129, 72 (2020). https://doi.org/10.1007/s12040-019-1330-3
- Siwana Ring Complex
- rare earth element