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Where is Tiger's Eye found?

Tiger's Eye (a variety of Chalcedony, which is a cryptocrystalline form of silica, SiO2)

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Tiger'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, particularly in the Griqualand West region, where vast deposits are found in banded iron formations.

Australia

Western Australia has notable deposits, often associated with banded iron formations.

India

Smaller deposits are found in various regions.

Myanmar (Burma)

Known for some occurrences.

United States

Limited occurrences in states like Arizona and California.

Canada

Some deposits have been reported.

Collecting tips

  1. Look for Metamorphic Terrains. Tiger's Eye is typically found in areas that have undergone low-grade metamorphism, often in association with ultramafic rocks or banded iron formations.
  2. Identify Fibrous Structures. Even in its raw form, look for a fibrous or banded appearance. The chatoyancy might be less pronounced before polishing but should still be discernible.
  3. Check for Associated Minerals. It can be found alongside other quartz varieties, iron oxides, and sometimes remnants of the original crocidolite (though this is less common in gem-quality material).
  4. Safety Precaution: Crocidolite. While Tiger's Eye itself is safe due to the complete silicification of crocidolite, raw material or associated rocks might still contain unaltered crocidolite (blue asbestos). Exercise extreme caution when collecting in areas known for Tiger's Eye, and avoid disturbing or inhaling dust from any fibrous blue minerals. Always wear appropriate personal protective equipment (respirator, gloves) if there's any doubt, and consult with a local expert or geologist.

Quick Check

Color:
Golden-yellow to reddish-brown with bands
Luster:
Silky, chatoyant
Streak:
White

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