Thornite
Fantasy mineral · Rare · unknown
A dense trigonal mineral recovered from planar boundary zones adjacent to lower planes. Develops microscopic barb-like surface projections over years. Its edges remain sharp even on polished surfaces.
Identity
- Formula
- unknown
- Chemical class
- Unknown
Crystallography
- Crystal system
- Trigonal
- Habits
- Acicular, Prismatic
Physical properties
- Mohs hardness
- 7.5
- Density
- 4.3 g/cm³
- Luster
- Metallic, Resinous
- Colors
- black, deep gray, dark red
- Streak
- black
- Transparency
- Opaque
Geology
- Origins
- Planar
- Geography
- Nine Hells border regions, Abyss upper layers
Classification
- Rarity
- Rare
- Gem quality
- No
Arcane properties
- Affinity
- Shadow, Death
- Effects
- Warding, Mind
- Planar origin
- Infernal
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