Nuummite
| Colour | Black, Gray |
|---|---|
| Mohs hardness | 5.5 - 6.0 |
| Lustre | Vitreous/glossy |
| Transparency | opaque |
| Cleavage | Perfect on 210 |
| Fracture | Conchoidal |
| Chemical formula | ()() |
| Specific gravity | 2.85 - 3.57 |
What is Nuummite?
Nuummite is a rare metamorphic rock that consists of the amphibole minerals gedrite and anthophyllite. It is named after the area of Nuuk in Greenland, where it was found.
How to identify Nuummite
- Lustre: Vitreous/glossy.
- Hardness: Mohs 5.5 - 6.0 — about as hard as a steel knife.
Stones often confused with Nuummite
Frequently asked questions
How hard is Nuummite?
Nuummite is Mohs 5.5 - 6.0 on the hardness scale.
What colour is Nuummite?
Nuummite is typically black, gray (Black, grey).