Mathan, Madhabendra2024-07-122024-07-122024-05http://hdl.handle.net/123456789/3302enMafic-ultramafic rocksPleochroismSouth African lamprophyresDISTDS1088AGLGeochemistry of lamprophyre dykes, Khoodia colliery, Mugma area, Raniganj coalfield, eclThesis