naa a22 4500 510756050 CHVBK 20180411083123.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s12594-013-0115-6 doi (NATIONALLICENCE)springer-10.1007/s12594-013-0115-6 A new occurrence of sapphirine-spinel-corundum-bearing granulite from NE of Jagtiyal, Eastern Dharwar Craton, Andhra Pradesh [Elektronische Daten] [D. Prakash, P. Chandra Singh, T. Hokada] We report a new occurrence of sapphirine-spinel-corundum bearing granulites enclosed in granitic gneisses near Jagtiyal in the Eastern Dharwar Craton (EDC). These granulites are very important in deciphering the prehistory of the thermal peak of metamorphism due to the presence of refractory phases. The appearance of sapphirine is related to the following reactions: (a) Spl1 + Crd1 = Spr1 (2:2:1) (b) Phl (in Bt1) + Crn1 = East (in Bt2) + Spr2 (7:9:3) + Crd2 (c) Bt2 + Crd1 + Crn1 = Spr2 (7:9:3) + Kfs + H2O (d) Crd1 + Spl1 + Crn1 = Spr2 (7:9:3). The P-T evolution of these sapphirine granulites has been constrained through the use of THERMOCALC program. Temperature of formation of sapphirine-spinel assemblages is high, around 800 °C, and pressure ranges from 5-7 kbars, suggesting that sapphirine formation took place during decompression stage. Geological Society of India, 2013 Prakash D. Centre of Advanced study in Geology, Banaras Hindu University, 221 005, Varanasi, India aut Chandra Singh P. Centre of Advanced study in Geology, Banaras Hindu University, 221 005, Varanasi, India aut Hokada T. National Institute of Polar Research, 10-3 Midori-cho, Tachikawa, 190-8518, Tokyo, Japan aut Journal of the Geological Society of India Springer India 82/1(2013-07-01), 5-8 0016-7622 82:1<5 2013 82 12594 https://doi.org/10.1007/s12594-013-0115-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12594-013-0115-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Prakash D. Centre of Advanced study in Geology, Banaras Hindu University, 221 005, Varanasi, India aut NATIONALLICENCE 700 1- Chandra Singh P. Centre of Advanced study in Geology, Banaras Hindu University, 221 005, Varanasi, India aut NATIONALLICENCE 700 1- Hokada T. National Institute of Polar Research, 10-3 Midori-cho, Tachikawa, 190-8518, Tokyo, Japan aut NATIONALLICENCE 773 0- Journal of the Geological Society of India Springer India 82/1(2013-07-01), 5-8 0016-7622 82:1<5 2013 82 12594 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer