Occurrence of népouite in the serpentinite of the Manipur ophiolite belt, Northeastern India: Implication for melt-rock interaction in a supra-subduction zone

• Published in: Journal of the Geological Society of India Vol. 90; no. 2; pp. 154 - 158
• Main Authors: Ovung, Thungyani N., Ray, Jyotisankar, Ghosh, Biswajit, Mandal, Debabrata, Dasgupta, Pallab, Paul, Madhuparna
• Format: Journal Article
• Language: English
• Published: Springer India Geological Society of India 01.08.2017; Springer Nature B.V
• Subjects: Composition; Diffraction; Diffraction patterns; Earth and Environmental Science; Earth Sciences; Electron microprobe; Geology; Hydrogeology; Hydrothermal alteration; Magnesium oxide; Olivine; Peridotite; Rocks; Serpentine; Serpentinite; Serpentinization; Silicon dioxide; Subduction; Subduction zones; Ultramafic rocks; X-ray diffraction; X-rays

Serpentinization is pervasive in the ultramafic rocks of Manipur ophiolite belt (MOB), Northeastern India. Electron microprobe data of a serpentinite from the Ukhrul-Nungbi sector of MOB shows Ni-rich serpentine mineral (NiO = 33.4-33.9 wt %, SiO 2 = 37.55-38.96 wt %, MgO= 14.83-16.89 wt %). The com...