Osmium isotopic composition of carbonatites and associated rocks from the Amba Dongar carbonatite complex, Gujarat reveals presence of old oceanic crust in the source

Jyoti Chandra1,2, Debajyoti Paul1, Indra SEKHAR Sen1, Aqib Jamal Ansari1 and Abhinav Uniyal1, (1)Indian Institute of Technology Kanpur, Department of Earth Sciences, Kanpur 208016, India, (2)CSIR-National Geophysical Research Institute, Hyderabad 500007, India
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