Restricted accessResearch articleFirst published online 2026
Lithium-enriched Sibagaon pegmatites of Rajasthan,India and their economic potentiality: Geospatial,geochemical and petrological insights for Li–Cs–Ta (LCT) pegmatite exploration
Sibagaon pegmatites in Northwest India demonstrate transition from barren granitic magmatism to LCT mineralization, offering geochemical insights to refine rare metal exploration models. Hosted in calc-silicate rocks, these pegmatites are highly fractionated, peraluminous, LCT-type, show syn- to post-collisional signatures and feature lepidolite (contain up to 2.34 w-t% Li2O) as primary Li- mineral, followed by elbaite to liddicoatite tourmalines. Geochemical markers distinguishing them from barren granites include low Nb/Ta ratios, REE tetrad effects, non-CHARAC behavior, and linear Li-F correlation. Lepidolite and tourmaline exhibit core to rim Li and F enrichment. Tourmalines with liddicoatite rims and feldspar replacement textures indicate late stage CaO rich fluid contamination. This study illustrates a continuum from fractional crystallization to magmatic-hydrothermal interaction with late Li-F fluid influx causing rare metal mineralization. These signatures with inferred resource of 91,295 tonnes at 0.673 wt-% Li2O provide a quantitative framework for identifying similar prospects in evolved collisional granitic systems.
TabelinCBDallasJCasanovaS, et al.Towards a low-carbon society: a review of lithium resource availability, challenges and innovations in mining, extraction and recycling, and future perspectives. Miner Eng2021; 163(1–4): 106743.
2.
U.S. Geological Survey. Mineral commodity summaries. 2023.
3.
GloverASRogersWZBartonJE. Granitic pegmatites: storehouses of industrial minerals. Elements2012; 8(4): 269–273.
4.
LinnenRLTruemanDLBurtRO. Tantalum and niobium: case studies of two rare metal resources. Elements2012; 8(4): 281–286.
5.
LondonD. Rare-element granitic pegmatites. In: VerplanckPLHitzmanMW (eds) Rare earth and critical elements in ore deposits. 18. Society of Economic Geologists Inc., 2016, pp.165–193.
6.
ČernýPTeertstraDChapmanR, et al.Extreme fractionation and deformation of the leucogranite – pegmatite suite at Red Cross lake, Manitoba, Canada. IV. Mineralogy. Can Mineral2012; 50(6): 1839–1875.
7.
ErcitTS. REE-enriched granitic pegmatites. In: LinnenRLSamsonIM (eds) Rare element geochemistry and mineral deposits. 17. The Geological Association of Canada,Short Course Notes, 2005, pp.175–199.
MirkamalovRDivaevFUzokovR, et al.Geology of critical mineral deposits of the Kuljuktau Mts., Central Kyzylkum (Uzbekistan). Appl Earth Sci2024; 134(1): 44–62.
12.
de WallHPanditMKSharmaKK, et al.Deformation and granite intrusion in the Sirohi area, SW Rajasthan – constraints on Cryogenian to Pan African crustal dynamics of NW India. Precambrian Res2014; 254: 1–18. https://doi.org/10.1016/j.precamres.2014.07.025
13.
GuptaSNAroraYKMathurRK, et al.Lithostratigraphic map of the Aravalli region, southern Rajasthan and northeastern Gujarat. Geol Surv India Misc Publ1980; 34: 1–21.
14.
Roy ChoudhuryMAgarwalNChanderS. Occurrence of liddicoatite-bearing LCT pegmatites in Sirohi region, northwest India and their rare metal potentiality. Curr Sci2020; 118(5): 723–727.
AverillWAOlsonDL. A review of extractive processes for lithium from ores and brines. Energy1978; 3(3): 305–313.
17.
GaoYBagasLLiK, et al.Newly discovered Triassic lithium deposits in the Dahongliutan area, north west China: a case study for the detection of lithium-bearing pegmatite deposits in rugged terrains using remote-sensing data and images. Front Earth Sci2020; 8: 591966. https://doi.org/10.3389/feart.2020.591966
18.
GrovesDIZhangLGrovesIM, et al.Spodumene: the key lithium mineral in giant lithium–cesium–tantalum pegmatites. Acta Petrolog Sin2022; 38(1): 1–8.
19.
ČernýPErcitTS. The classification of granitic pegmatites revisited. Can Mineral2005; 43(6): 2005–2026.
20.
SinclairWD. Granitic pegmatites. In: EckstrandORSinclairWDThorpeRI (eds) Geology of Canadian mineral deposit types. Ottawa: Geological Survey of Canada (Canada Communication Group), 1996, pp.503–512.
21.
ScharfenbergLde WallHSchöbelS, et al.In situ gamma radiation measurements in the Neoproterozoic rocks of Sirohi region, NW India. J Earth Syst Sci2015; 124(6): 1223–1234.
22.
SomaniOPMisraAJeyagopalAV, et al.Radioelemental distribution in Neoproterozoic volcano-sedimentary Sindreth Basin, Sirohi District, Rajasthan and its significance. Curr Sci2012; 103(3): 305–309.
23.
HeronAM. Geology of central Rajputana. Mem Geol Surv India1953; 79: 339.
24.
JoshiAULimayeMA. Evidence of syndeformational granitoid emplacement within Champaner Group, Gujarat. J Maharaja Sayajirao Uni Baroda2014; 49: 45–54.
25.
KaurPZehAChaudhriN, et al.Two distinct sources of 1.73–1.70 Ga A-type granites from the northern Aravalli orogen, NW India: constraints from in situ zircon U–Pb ages and Lu–Hf isotopes. Gondwana Res2017; 49: 164–181. https://doi.org/10.1016/j.gr.2017.05.012
26.
BhattacharjeeJFareeduddin,JainSS. Tectonic setting, petrochemistry and tungsten metallogeny of the Sewariya granite in the South Delhi Fold Belt, Rajasthan. J Geol Soc India1993; 42(1): 3–16.
27.
SinghSShuklaAUmasankarBH, et al.2021. Timing of South Delhi orogeny: interpretation from structural fabric and granite geochronology, Beawar–Rupnagar–Babra Area, Rajasthan, NW India. https://doi.org/10.1007/978-3-030-40593-9_1
28.
PanditMKde WallHDaxbergerH, et al.Mafic rocks from Erinpura gneiss terrane in the Sirohi region: possible ocean floor remnants in the foreland of the Delhi Fold Belt, NW India. J Earth Syst Sci2011; 120(4): 627–641.
29.
PearceNJPerkinsWTWestgateJA, et al.A compilation of new and published major and trace element data for NIST SRM 610 and NIST SRM 612 glass reference materials. Geostand Newsl1997; 21(1): 115–144.
30.
MiddlemostE. Naming materials in the magma/igneous rock system. Earth Sci Rev1994; 37(3–4): 215–224.
31.
ShandSJ. The eruptive rocks. 2nd edn. John Wiley, 1943, p.444.
32.
ManiarPDPiccoliPM. Tectonic discriminations of granitoids. GSA Bull1989; 101(5): 635–643.
33.
McDonoughWSunSS. The composition of the earth. Chem Geol1995; 120(3–4): 223–253.
34.
BauM. Controls on the fractionation of isovalent trace elements in magmatic and aqueous systems: evidence from Y/Ho, Zr/Hf, and lanthanide tetrad effect. Contrib Mineral Petrol1996; 123(3): 323–333.
35.
IrberW. The lanthanide tetrad effect and its correlation with K/Rb, Eu/Eu*, Sr/Eu, Y/Ho and Zr/Hf of evolving peraluminous granite suits. Geochim Cosmochim Acta1999; 63(3–4): 489–508.
36.
BallouardCPoujolMBoulvaisP, et al.Nb–Ta fractionation in peraluminous granites: a marker of the magmatic–hydrothermal transition. Geology2016; 44(3): 231–234. https://doi.org/10.1130/G37475.1
37.
WhitneyDLEvansBW. Abbreviations for names of rock-forming minerals. American Mineralogist2010; 95: 185–187. https://doi.org/10.2138/am.2010.3371
38.
FosterMD. Interpretation of the composition of lithium micas. US Geol Surv Prof Pap1960: 1–146. https://doi.org/10.3133/pp354B
39.
TischendorfG. On Li-bearing micas: estimating Li from electron microprobe analyses and an improved diagram for graphical representation. Mineral Mag1997; 61(408): 809–834.
40.
CaoCShenPBaiYX, et al.Chemical evolution of micas and Nb–Ta oxides from the Koktokay pegmatites, Altay, NW China: insights into rare-metal mineralization and genetic relationships. Ore Geol Rev2022; 146(1): 104933.
41.
RodaEKellerPPesqueraA, et al.Micas of the muscovite–lepidolite series from Karibib pegmatites, Namibia. Mineral Mag2007; 71(1): 41–62.
42.
Van LichterveldeMGrégoireMLinnenR. Trace element geochemistry by laser ablation ICP-MS of micas associated with Ta mineralization in the Tanco pegmatite. Contrib Mineral Petrol2008; 155(6): 791–806.
43.
ČernýPMeintzerREAndersonAJ. Extreme fractionation in rare-element granitic pegmatites – selected examples of data and mechanisms. Can Mineral1985; 23(3): 381–421.
44.
TruemanDLČernýP. Exploration for rare-element granitic pegmatites. In: ČernýP (ed.) Granitic pegmatites in science and industry, Short Course Handbook 8 Mineralogical Association of Canada, 1982, pp.463–494.
45.
WiseMACurryACHarmonRS. Reevaluation of the K/Rb-Li systematics in muscovite as a potential exploration tool for identifying Li mineralization in granitic pegmatites. Minerals2024; 14(1): 117.
PearceJAHarrisNBWTindleAG. Trace element discrimination diagrams for the tectonic interpretation of granitic rocks. J Petrol1984; 25(4): 956–983.
48.
HarrisNBWPearceJATindleAG. Geochemical characteristics of collision-zone magmatism. In: CowardMPRiesAC (eds) Collision tectonics. 19. Geological Society of London Special Publication, 1986, pp.67–81.
49.
AnnikovaIYVladimirovAGSmirnovSZ, et al.Geology and mineralogy of the Alakha spodumene granite porphyry deposit, Gorny Altai, Russia. Geol Rudn Mest2016; 58(5): 404–426.
50.
MelentievGBYurgensonGADelitzynLM. Prospects and priorities for the reconstruction and development of lithium mining production on the basis of domestic raw materials. IOP Conf Ser Earth Environ Sci2022; 962(1): 012055.
51.
SeltmannRSolovievSShatovPirajnoF, et al.Metallogeny of Siberia: tectonic, geologic and metallogenic settings of selected significant deposits. Aust J Earth Sci2010; 57(6): 655–706.
52.
GoodenoughKMShawRABorstAM, et al.Lithium pegmatites in Africa: a review. Econ Geol2025; 120(3): 513–539.
TraoreEMOlatunjiASSidibeM, et al.Geological setting, geochemistry and mineralogy of lithium bearing pegmatites in South Western Mali, West Africa: a review. Geol Ecol Landscapes2025; 10(1): 1–23. https://doi.org/10.1080/24749508.2025.2449623
55.
Roy ChoudhuryMAgarwalNLalS. Preliminary exploration for lithium and associated rare metal mineralization in Sibagaon area, Sirohi district, Rajasthan. Unpublished report of Geological Survey of India, Western region, Jaipur. 2022.
56.
Phelps-BarberZTrenchAGrovesDI. Recent pegmatite-hosted spodumene discoveries in western Australia: insights for lithium exploration in Australia and globally. Appl Earth Sci2022; 131: 100–113.
