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Falcon's Eye

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About Falcon's EyeHide

A variety of Tiger's Eye

Trade name for a blue variety of Tiger's Eye (in fact unreplaced crocidolite). The blue colour is caused by Fe2+ compared to Fe3+ in the (oxidised) yellow/brown Tiger's Eye.

Heaney & Fisher (2003): "Tiger's-eye is an attractive and popular gemstone that is ubiquitous in stores that cater to rock and mineral collectors. For more than a century, textbooks and museum displays have identified the material as an archetype of pseudomorphism, i.e., the replacement of one mineral by another with the retention of the earlier mineral's shape. Our study has revealed that the textures responsible for the shimmer of tiger's-eye do not represent pseudomorphic substitution of quartz after preexisting crocidolite asbestos. Rather, we argue that tiger's-eye classically exemplifies synchronous mineral growth through a crack-seal vein-filling process."



Visit gemdat.org for gemological information about Falcon's Eye.


Synonyms of Falcon's EyeHide

Other Language Names for Falcon's EyeHide

German:Falkenauge

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Falcon's EyeHide

Reference List:
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Peter J. Heaney and Donald M. Fisher (2003): New interpretation of the origin of tiger's-eye. Geology, 31, 323-326.

Internet Links for Falcon's EyeHide

Localities for Falcon's EyeHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. β“˜ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Australia
 
  • Western Australia
    • East Pilbara Shire
      • Weeli Wolli Creek Area
        • Mining Area C (Northern Flank; Packsaddle)
J M Bennett Collection
Mineral and/or Locality  
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