About Nickeline
A nickel arsenide, known for its pale copper-red color and metallic luster. It's a stone of truth and transformation, encouraging self-awareness and dispelling illusions.
Primary Hues
Pale Copper-Red, Tarnishes grey or blackish, often with a metallic luster
Geological & Scientific Details
Nickeline is classified as a arsenide mineral mineral which typically crystallizes in the hexagonal system. Its chemical formula is nickel arsenide (NiAs). Common crystal habits include massive columnar to reniform, rarely as distorted, horizontally striated, {1011} terminated crystals.
Key Geological Properties:
- Mineral Category: Arsenide mineral
- Chemical Formula: nickel arsenide (NiAs)
- IMA Symbol: Nc[1]
- Crystal System: Hexagonal
- Predominant Geological Color: Pale copper red with blackish tarnish. white with strong yellowish pink hue on polished section strongly anisotropic
- Crystal Habit: Massive columnar to reniform, rarely as distorted, horizontally striated, {1011} terminated crystals
- Twinning: On {1011} producing fourlings
- Cleavage: {1010} Imperfect, {0001} Imperfect
- Luster: metallic
- Streak: brownish black
- Diaphaneity: Opaque
Associated Minerals
- Gersdorffite
- Rammelsbergite
- Skutterudite
- Cobaltite
- Annabergite (alteration product, 'Nickel Bloom')
- Native Silver
- Native Bismuth (common in hydrothermal nickel-cobalt veins)