| Types | Diameter (µm) | Gobular forms | Constituent unit |
| Solid druse | 20 - 80 | Densely | Like rose petals |
| Semisolid druse | 20 - 80 | Only on the edges | Like rose petals |
| Loose druse | 20 - 80 | There was a distance/tenuous | Like glass flakes |