Laser Ablation Multi Collector Inductively Coupled Plasma Mass Spectrometer (LA-ICPMS)Geochronology & Isotope Geology Studies
LAICPMS is an analytical technique that can be used to obtain high precision trace elemental and isotopic information directly from solid phases. It comprises of two main parts:
LA:The laboratory houses ArF excimer gas-based Laser Ablation System through which tiny volume of solid material is ablated with a powerful short pulse 193nm source for mass spectrometric analyses.
MC-ICPMS:A hybrid mass spectrometer instrument that combines the advantages of superior ionization of an Inductively Coupled Plasma (ICP) source and the precise measurements of a magnetic
sector Multi-Collector (MC) Mass Spectrometer (MS) to measure isotopic ratios of elements that are used in geochronology, geochemistry and cosmochemistry.
|Advantages: The primary advantage of MC-ICPMS is its ability to analyse a broader range of elements, including those with high ionisation potential that are difficult to analyse by other mass spectrometers.
Applications:Major applications include solid state U-Pb geochronology on polished refractory phases such as zircon, monazite, sphene etc. using LA system. Other applications mainly used in the laboratory are determination of Sr and Pb isotopic ratios on chemically digested geological and environmental samples.
The Laboratory houses Clean Chemistry Laboratory equipped with Microwave Digestion System, acid distillation unit and MQ water plant ion exchange resin columns for separation of Sr, Pb, Sm & Nd fractions for further isotopic analyses.
- The LA MC ICP MS Lab has significantly contributed in the field of crustal evolution of Indian Craton and zircon U-Pb geochronology has produced the evidence for the oldest crust in the Eastern Dharwar Craton (EDC).
(Abstract no. 858, Goldschmidt Conference 2017, Paris, August 13-18) and Constraints on episodic magmatism of eastern Trans-Himalaya; Geological Journal, 2021.
- Pb isotopic signatures as an exploratory tool for mine body extension; case study in and around Khetri Mines. Applied Geochemistry, 128 (2021) 104938
- Apart from these the Laboratory has done pioneering work in the field of environmental studies such as impact of coal based Thermal power plants on lead pollution and Source Apportionment with a Health Risk Assessment of Pb pollution in the Street Dust of Kolkata. (Environmental Science and Pollution Research,23(22), pp.22454-22466; International Journal of Environmental Science and Technology,15(1),. Chemosphere,197, pp.152-164).
Major publications from the laboratory:
Full Length Papers
- Pebam J., Kamalakannan D., Krishna K.V.S.S., Sengupta S., Gosh J.G., Kumar R., Basak K., Guha D., 2021. Zircon U-Pb ages of Lohit Plutonic Complex, NE India: Constraints on episodic magmatism of eastern Trans-Himalaya. Geological Journal 2nd revision sought by the reviewers and under modifications in progress, Geological Journal (Wiley Publication).
- Das, A., Patel, S.S., Basak, K., and Guha, D.,2021. Pb isotopic assessment of Khetri Copper Belt, Rajasthan, India and its use as an exploratory tool for mine body extension (Accepted,Applied Geochemistry, Elsevier, March,2021).
- Das, A., Kumar, R., Patel, S.S., Saha, M.C. and Guha, D.,2020. Source apportionment of potentially toxic elements in street dust of a coal mining area in Chhattisgarh, India, using multivariate and lead isotopic ratio analysis.Environmental Monitoring and Assessment,192(6), pp.396-396.
- Misra A, Chauhan A and Chatterjee D. 2020.Petrology, geochemistry and geochronology of Neoarchean A-type granite from Alwar Basin, North Delhi Terrane, NW India, J. Earth Syst. Sci.129 88; https://doi.org/10.1007/s12040-020-1349-5.
- Pebam, J. and Kamalakannan, D., 2019.Petrogenesis and emplacement of magmatic rocks of Lohit Plutonic Complex, Arunachal Trans-Himalaya, Northeast India. Indian Journal of Geosciences, 73(3), pp.213-230.
- Kumar, R., Ghosh, J.G., Patel, S.S., Das, A., Sengupta, S., Krishna, K.V.S.S. and Guha, D., 2019. Pbâisotopic characterization of major Indian Gondwana Coalfields: implications for environmental fingerprinting and Gondwana reconstruction. In Tectonics and Structural Geology: Indian Context (pp. 441-455). Springer book Chapter
- Das, A., Krishna, K.V.S.S., Kumar, R., Saha, M.C., Sengupta, S. and Ghosh, J.G., 2018. Extent and characterization of heavy metal pollution in the street dusts of Kolkata, India with source identification by multivariate statistical analysis.Indian Journal of Geosciences, 72(4), pp.261-268.
- Das, A., Patel, S.S., Kumar, R., Krishna, K.V.S.S., Dutta, S., Saha, M.C., Sengupta, S. and Guha, D., 2018. Geochemical sources of metal contamination in a coal mining area in Chhattisgarh, India using lead isotopic ratios.Chemosphere, 197, pp.152-164.
- Das, A., Krishna, K.V., Kumar, R., Saha, M.C., Sengupta, S. and Ghosh, J.G., 2018. Lead isotopic ratios in source apportionment of heavy metals in the street dust of Kolkata, India. International journal of environmental science and technology, 15(1), pp.159-172.
- Kumar, R., Patel, S.S., Das, A., Ghosh, J.G., Sengupta, S., Krishna, K.V.S.S. and Guha, D., 2017. Variability of Pb-isotopes in the East Indian Gondwana Coal deposits: Itâs influence on Kolkata street dust. Indian Journal of Geoscience, 71(4), pp.575-588.
- Pebam J., Kamalakannan D., 2020. Geochemistry and Sr isotopic studies on leucogranites from Tawang, western Arunachal Himalayas, India. Submitted an abstract for 36th International Geological Congress, New Delhi, India.
- Kamalakannan D., Pebam J., 2018. Petrology and Geochemistry of Tidding Ophiolite from eastern Arunachal Himalayas: Implications on their petrogenesis and tectonic setting. Abstract, National seminar on Dynamics of surface and subsurface geological processes,Pondicherry University, Puducherry, India, February 8-9.
- Adhikary, D., Sahoo, R.K., Behera, K.K., and Krishna, K.V.S.S., 2017. Zircon U-Pb dating of the TTG Gneiss in and around Khammam area, Telangana, India-Evidence for the oldest crust in the Eastern Dharwar Craton (EDC). Abstract no. 858, Goldschmidt conference, Paris, August 13-18.
- Pebam, J., Kamalakannan D., Sengupta, S., Guha, D., Ghosh, J.G., Krishna K.V.S.S., 2017. Zircon U-Pb Ages of Lohit Plutonic Complex, Arunachal Pradesh: Implication in understanding India â Asia juxtaposition. Abstract, NCPS2017/112, National conference on Polar Sciences, National Centre for Polar and Ocean Research, Goa, India, May 16-17.
- Das, A., Ghosh, J.G., Krishna, K.V.S.S., Kumar, R., Saha, M.C., 2016. Application of Lead Isotopic Ratios and Multivariate Statistical Analysis in Source Apportionment with a Health Risk Assessment of Heavy Metals in the Street Dust of Kolkata, India. Conference abstract, 35th International Geological Congress, Cape Town, South Africa.
- Pebam J., Ghosh J.G., Kamalakannan D., 2016. LA-MC-ICPMS zircon U-Pb age and Hf isotopic studies of the Lohit Plutonic Complex, Arunachal Pradesh, India. Conference abstract,35th International Geological Congress, Cape Town, South Africa.
- Kumar, R., Patel, S S. and Ghosh J. G., 2016. Variability of Pb-isotopes in the East Indian Gondwana Coal deposits: its influence on Kolkata street dust. Conference abstract, 35th International Geological Congress, Cape Town, South Africa.
Geological Survey of India, Ground Floor, Dharitri Building , Sector-V, Salt Lake, Kolkata 700091
- Dr. Sandip Nandy, Director G&IG; Mobile: 9433948719
- Subhra Sarita Patel, Senior Geologist; Mobile: 9830137280
- Rajeev Kumar, Senior Geologist; Mobile: 8334054873
- Avijit Das, Senior Chemist; Mobile:9903750031
- Kamalakannan D., Senior Geologist; Mobile:9830582313
Laser Ablation Quadrupole Inductive Coupled Plasma Mass Spectrometry
Name of the instrument/Equipment: LA-Q-ICPMS (Laser Ablation Quadrupole Inductive Coupled Plasma Mass Spectrometry; LA-213nm G2 unit and ICPMS7700x)
Original Equipment manufacturer: ICPMS7700X-OEM M/S Agilent Technologies Singapore; LA-Nd: YAG solid state 213nm G2-OEM-M/S CETAC TELEDYNE, USA
Service provider: OEM M/S Agilent Technologies, Singapore
Intended analyses/Scope of output:
Insitu direct sampling of solid mineral phases for the trace elements quantitative analysis up to the ppb level concentration of wide matrix of minerals. Direct analysis from petrographic thin sections, polished sections, stubs and grain mounts.
Date of installation: 17.02.2012 (procurement); Commissioned in December, 2014 and installed in March, 2015
Important contributions (mineral investigations):
This technique at GSI, NCEGR, Faridabad dominantly being used for in situ analysis of geological samples to study trace elements
concentrations and zonationâs in different minerals matrix-Silicates, Oxides, Phosphates and Sulphides, and has thrust upon few
domains of geological field which are listed below with some examples of studies carried out so-far: Meteorites Study, Gems
and Precious Mineral Field, Trace elemental geochemistry based Mineral Exploration Research, In-situ elemental analysis of
Mid Oceanic Ridge Basalt (MORB) and Inner Volcanic arc chain samples of Marine & Coastal Survey Division, Petro-genetic and
Magmatic Evolution etc. Also catered to the prime organizations/ institutes like AMD (Atomic Mineral Directorate),
Delhi University, IIT-KGP and IIT-ISM. Other than this there is also request coming from private sectors as well to
collaborate for mineral exploration based R & D.
Capacity/ samples analysed per month/year:
2014-15: Instrument LA-Q-ICPMS installation and commissioned finally in March, 2015; 2014-15 (LA-ICPMS handed over by Agilent Technologies, on 22nd Dec, 2014)
2015-16: 320 Test runs and solution mode analysis â¢M-IVBâ¢Chemical Div
Instrument was under first year analytical protocol mainly developed for solution and LA analysis.
2016-17: LAQICPMS Laboratory taken up first Service Item. 113 (64-LA and 49 solution mode analysis)
2017-18: 245 (LA)
2021-22 (Till 31st July, 2021): Nil
Major publications from the laboratory:
Other than this, 03 reports based upon Petro-genetic aspect based upon Trace Element and REE analysis, and Mineral
exploration based R & D related GSI unpublished reports have been circulated in 2018 and 2019 from the laboratory.
- Geological studies in the Baalsrudfiellet nunatek between the Schirmacher Oasis and the Wohlthat mountains to establish the continuation of Easter African Orogen (EAO) in Central Dronning Maud Land, East Antarcticaâ which is published in Geological Society of London, Special Publication 457; Author-S. K Roy et al., 13th April, 2017 (GSI+D.U).
- Inferring a Neoproterozoic orogeny preceding the Rodinia break-up in the Sirohi Group, NW India; Author-Arora et al, May, 2017 (GSI+D.U)
- Yttrium concentration in Almandine Garnet from paragenesis Tallaksenvarden: A Function of T related partioning or stress induced re-distribution; Author-Raghuram et al., 2017 (GSI).
- Trace elements and REE Geochemistry olivine and enstatite chondrules in ordinary chondrites: Insights in to their Cosmochemical genesis; Author-Dutta et al, 2017 (GSI).
- In-situ Trace elements & REE Geochemistry of Chondrites (H & L): Insight into the Cosmochemical Processes; Author-Dutta et al., 2019 (GSI).
- Trace Element Systematics of pyrite and its implications for refractory gold mineralisation within the carbonaceous metasedimentary units of Palaeoproterozoic South Purulia Shear Zone, Eastern India; Author-Majumdar et al., 2019 (IIT-ISM).
- Genesis of metasomatic gold mineralization in the Pahardiha-Rungikocha gold deposit, Eastern India: Constraints from trace elements signatures in chromite cored magnetite and bulk rock geochemistry; Author-Barla et al., 2020 (IIT-ISM).
- Trace Element Systematics and isotopic characteristics of sphalerite-pyrite from volcanogenic massive sulphide deposits of Betul Belt, Central Indian Tectonic Zone: Insight of ore genesis to exploration; Author-B. Mishra et al., 2021 (GSI)
- Geochemical characterization of Mukundpura carbonaceous chondrites (CM2): Insights into planetary Processes; Author-Dutta et al., 2021 (GSI)
- Geochemical signature of Impactites of Dhala Crater, India; Author-Dutta et al, 2021 (GSI).
Geological Survey of India, N.H- 5P, NIT, Faridabad-121001, Haryana
Laboratory in-charge: Dr Madhushree Mandal, Superintending Geologist
Contact No. 8861247021, Email ID: firstname.lastname@example.org