metamorphic
Tiger Iron
Tiger Iron (Hematite, Red Jasper, and Tiger's Eye)
Hardness: 6.5–7 on Mohs scale. Color: Alternating bands of silver-grey, deep red, and golden-yellow. Luster: Silky to metallic. Crystal Structure: Hexagonal/Trigonal. Cleavage: None. Specific Gravity: 3.2-4.1.
- Hardness
- 6
- Luster
- Silky to metallic
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Physical properties
Hardness: 6.5–7 on Mohs scale. Color: Alternating bands of silver-grey, deep red, and golden-yellow. Luster: Silky to metallic. Crystal Structure: Hexagonal/Trigonal. Cleavage: None. Specific Gravity: 3.2-4.1.
Formation & geological history
Formed in Precambrian Banded Iron Formations (BIFs) over 2 billion years ago. It consists of layers of Tiger's Eye, Jasper, and Hematite compressed together through tectonic activity and sedimentary layering.
Uses & applications
Primarily used in jewelry (cabochons, beads), ornamental carvings, knife handles, and as a popular collector's mineral due to its unique patterns.
Geological facts
This sedimentary-metamorphic rock is primarily found in the Ord Ranges of Western Australia. It is often referred to as a 'gemstone' and is highly valued for its chatoyancy and distinct banding.
Field identification & locations
Identify by its alternating metallic silver bands (hematite), red bands (jasper), and golden chatoyant bands (tiger's eye). It is denser than pure tiger's eye. Found almost exclusively in Western Australia and South Africa.
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