Hornfels
Hornfels is a rock. It has a Mohs hardness of Variable (usually medium to high) and dull to slightly shiny luster.
Hornfels properties
| Type | Rock |
|---|---|
| Mohs hardness | Variable (usually medium to high) |
| Luster | Dull to slightly shiny |
| Typical colors | Gray, green, brown, or black |
| Formation | Metamorphic rock formed from the contact metamorphism of shale or other clay-rich sediments |
| Rarity | 3 / 10 |
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