Where is Tiger's Eye found?
Tiger's Eye (variety of Chalcedony, SiO2)
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Open the appTiger's Eye occurs in specific geological environments. Knowing where to look, and in what kind of rock, is the difference between going home empty-handed and finding a great specimen.
Where to find Tiger's Eye
South Africa
The primary and most significant source of Tiger's Eye, particularly in the Griqualand West region, Northern Cape Province. Large deposits are found in the Asbestos Mountains.
Australia
Significant deposits are found in Western Australia, particularly in the Hamersley Range, producing high-quality material.
India
Known for some occurrences, though generally less prominent than South African or Australian sources.
Myanmar (Burma)
Minor occurrences have been reported.
United States
Small deposits found in various states, including Arizona and California.
Canada
Some occurrences have been noted in parts of Canada.
Collecting tips
- Look for Metamorphic Terrains. Tiger's Eye is found in areas with significant metamorphic activity, often associated with iron-rich formations and the presence of crocidolite-bearing rocks.
- Identify Fibrous Structures. Even in its raw form, look for a distinct fibrous texture. The chatoyancy might be less pronounced before polishing but the parallel fibers should be visible.
- Check for Golden-Brown Hues. The characteristic golden-yellow to reddish-brown colors are a key indicator. Hawk's Eye (blue Tiger's Eye) is also found in similar environments.
- Examine for Silky Luster. Even on unpolished surfaces, a subtle silky sheen can often be observed, especially when rotated under a light source.
- Safety Precaution: Crocidolite. While Tiger's Eye itself is silicified and generally safe, its precursor mineral, crocidolite, is a form of asbestos. When collecting raw, unpolished material, especially in its original geological context, there is a potential risk of encountering un-silicified crocidolite. Avoid disturbing or inhaling dust from such materials. Always wear appropriate respiratory protection (e.g., N95 mask) and eye protection when handling raw, unverified fibrous minerals in the field. Polished Tiger's Eye is considered safe as the asbestos fibers have been replaced by silica.
Quick Check
- Color:
- Golden-yellow to reddish-brown with fibrous bands.
- Luster:
- Silky, chatoyant.
- Streak:
- White
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