|
Formula | |
| Optic class & sign | |
| Relief | |
| Refractive indices | |
| Birefringence (max.) | |
| | |
| Sign of elongation | |
| Interference figure | |
| Colour / pleochroism | |
| Zoning | |
|
|
Form | Habit | |
| | Surface | |
| Cleavage | |
| Twinning | |
| Extinction | |
|
|
Reaction textures | |
| Alteration / decomposition | |
|
|
Occurence | Ign | |
| | Met | |
| | Sed | |
| | Hyd | |
| | Other | |
|
|
Distinctive properties | |
| Additional comments | |
|
|