Group I | Group II | ||
P | Sodalite | 1 | Mottled extinction |
Q | Tourmaline | 2 | Isotropic |
R | Calcite | 3 | Pleochroic from blue to brown |
S | Muscovite | 4 | Twinkling effect |
Group I | Group II |
P. Bababudan Group | 1. Eastern Dharwar |
Q. Banded Gneissic Complex-I | 2. Western Dharwar |
R. Bonai Granite | 3. Aravalli |
S. Kolar Group | 4. Singhbhum |