pointgroups |
|||||
forms | 2/m | m | 2 |
||
c pinacoid | + | - | + | ||
a pinacoid | + | - | + | ||
b pinacoid | + | + | - | ||
3d order prism | + | - | - | ||
2nd order pinacoid | + | - | + | ||
1st order prism | + | - | - | ||
4th order prism | + | - | - | ||
c pedion | - | + | - | ||
a pedion | - | + | - | ||
3d order doma | - | + | - | ||
2nd order pedion | - | + | - | ||
1st order doma | - | + | - | ||
4th order doma | - | + | - | ||
b pedion | - | - | + | ||
3d order sphenoid | - | - | + | ||
1st order sphenoid | - | - | + | ||
4th order sphenoid | - | + | - |