metamorphic
Tiger Iron
Tiger Iron (composite of Tiger's Eye, Red Jasper, and Hematite)
Hardness: 6.5-7 (Mohs scale). Color: bands of golden-brown, deep red, and metallic silver/grey. Luster: Vitreous to sub-metallic. Crystal system: Hexagonal/Trigonal. Cleavage: None. Specific gravity: 2.64-2.71.
- Hardness
- 6
- Color
- bands of golden-brown, deep red, and metallic silver/grey
- Luster
- Vitreous to sub-metallic
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Physical properties
Hardness: 6.5-7 (Mohs scale). Color: bands of golden-brown, deep red, and metallic silver/grey. Luster: Vitreous to sub-metallic. Crystal system: Hexagonal/Trigonal. Cleavage: None. Specific gravity: 2.64-2.71.
Formation & geological history
Formed through the metamorphic transformation of sedimentary Banded Iron Formations (BIFs). The material is predominantly found in the Hamersley Range of Western Australia, dating back approximately 2.2 billion years (Proterozoic era).
Uses & applications
Primarily used for lapidary work, jewelry making (cabochons, beads), decorative carvings, and as a popular specimen for crystal healing and mineral collectors.
Geological facts
Tiger Iron is unique because it is a natural conglomerate of three distinct minerals: Tiger's Eye (chatoyant quartz), Red Jasper, and Hematite. The bands represent ancient seafloor deposits enriched with silica and iron.
Field identification & locations
Identify by its heavy weight (due to iron content) and distinct contrasting bands of chatoyant gold, matte red, and metallic grey. It is predominantly sourced from Western Australia and South Africa.
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