naa a22 4500 51075614X CHVBK 20180411083123.0 cr unu---uuuuu 180411e20131201xx s 000 0 eng 10.1007/s12594-013-0198-0 doi (NATIONALLICENCE)springer-10.1007/s12594-013-0198-0 Platinum group of elements in Semra komatiites, Palamau District, Jharkhand: A preliminary observation [Elektronische Daten] [Jugnu Prasad, D. Bhattacharya] Semra komatiites that occur at the NW fringe of the Chotanagpur Gneissic Complex represent high PGE content, associated with the pyrrhotite, pentlandite, chalcopyrite and pyrite. They display wide variation in the IPGE concentration and characterized by Pd/Pt values (> 1) similar to that of primitive mantle. The negative Ir anomaly is attributed to temperature dependant solubility limit, therefore, not a reflection of bulk mantle IPGE content. Wide variation in the Au content indicates its highly mobile nature. Metasomatism and serpentinisation possibly have played significant role in the Au enrichment. Geological Society of India, 2013 PGEs nationallicence Semra Komatiites nationallicence Chotanagpur Gneissic Complex nationallicence Prasad Jugnu Post Graduate Department of Geology, Ranchi University, 834 008, Ranchi, India aut Bhattacharya D. Post Graduate Department of Geology, Ranchi University, 834 008, Ranchi, India aut Journal of the Geological Society of India Springer India 82/6(2013-12-01), 607-612 0016-7622 82:6<607 2013 82 12594 https://doi.org/10.1007/s12594-013-0198-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12594-013-0198-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Prasad Jugnu Post Graduate Department of Geology, Ranchi University, 834 008, Ranchi, India aut NATIONALLICENCE 700 1- Bhattacharya D. Post Graduate Department of Geology, Ranchi University, 834 008, Ranchi, India aut NATIONALLICENCE 773 0- Journal of the Geological Society of India Springer India 82/6(2013-12-01), 607-612 0016-7622 82:6<607 2013 82 12594 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer