Input interpretation
columbite group | birefringence
Ranked values
| visual | ratios | | comparisons manganotantalite | | 0.6765 | 1 | 32.35% smaller ferrotantalite | | 1 | 1.478 | 47.83% larger
Birefringence rankings
1 | manganotantalite | 0.115 2 | ferrotantalite | 0.17 (based on 2 values; 3 unavailable)