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Tiger's Eye

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Colour:
Yellow-brown
Lustre:
Vitreous
Hardness:
7
Crystal System:
Trigonal
A Mixture Of:
Common name for a variety of quartz which is chatoyant because of parallel intergrowth of quartz crystals and altered amphibole fibres that mostly turned into limonite. Much used as an ornamental and lapidary rock.
See also Tiger Iron.

A new interpretation of the origin of tiger's eye was recently given by Heaney and 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 Tiger's Eye.


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Physical Properties of Tiger's EyeHide

Vitreous
Colour:
Yellow-brown
Hardness:

Crystallography of Tiger's EyeHide

Crystal System:
Trigonal

Synonyms of Tiger's EyeHide

Other Language Names for Tiger's EyeHide

German:Tigerauge
Norwegian (Bokmål):Tigerøye

Varieties of Tiger's EyeHide

Blue Tiger's EyeIn fact unreplaced crocidolite.
Falcon's EyeTrade 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 tha...

Common AssociatesHide

Associated Minerals Based on Photo Data:
Hematite4 photos of Tiger's Eye associated with Hematite on mindat.org.
Crocidolite3 photos of Tiger's Eye associated with Crocidolite on mindat.org.
Quartz2 photos of Tiger's Eye associated with Quartz on mindat.org.
Jasper2 photos of Tiger's Eye associated with Jasper on mindat.org.
Rose Quartz1 photo of Tiger's Eye associated with Rose Quartz on mindat.org.
Petrified Wood1 photo of Tiger's Eye associated with Petrified Wood on mindat.org.
Obsidian1 photo of Tiger's Eye associated with Obsidian on mindat.org.
Chrysotile1 photo of Tiger's Eye associated with Chrysotile on mindat.org.
Tiger Iron1 photo of Tiger's Eye associated with Tiger Iron on mindat.org.
Chert1 photo of Tiger's Eye associated with Chert on mindat.org.

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 Tiger's EyeHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Heaney, P. J. & Fisher, D. M. (2003): New interpretation of the origin of tiger's-eye. Geology, 31, 323-326.

Internet Links for Tiger's EyeHide

Localities for Tiger'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. ⓘ - 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
 
  • New South Wales
    • Vernon Co.
      • Walcha
Matthew Goodwin
  • Western Australia
    • Ashburton Shire
      • Mount Brockman
Kim Macdonald
      • Wittenoom
        • Wittenoom Gorge
self-collected samples from south end of W Gorge in 2006-2007
    • East Pilbara Shire
      • Weeli Wolli Creek Area
J M Bennett Collection
    • Pilbara Region
R Bottrill collection
    • Port Hedland Shire
      • De Grey Station
Fetherstone et al 2013: Gemstones of WA
China
 
  • Henan Province
    • Nanyang Prefecture
www.lapidaryjournal.com/feature/jul00str.cfm
Namibia
 
  • Erongo Region
http://www.idexonline.com/portal_FullMazalUbracha.asp?id=27923
  • Kunene Region
    • Outjo District
(M Kampf collection)
South Africa
 
[www.johnbetts-fineminerals.com]
    • Pixley ka Seme District
P.F. Ledwaba (2014) Tiger’s eye in the Northern Cape Province — potential for employment creation and poverty alleviation. The Journal of The Southern African Institute of Mining and Metallurgy 114:881-885
P.F. Ledwaba (2014) Tiger’s eye in the Northern Cape Province — potential for employment creation and poverty alleviation. The Journal of The Southern African Institute of Mining and Metallurgy 114:881-885
P.F. Ledwaba (2014) Tiger’s eye in the Northern Cape Province — potential for employment creation and poverty alleviation. The Journal of The Southern African Institute of Mining and Metallurgy 114:881-885
Alessandro Cantamessa photo ID 202250
Gutzmer, J., Beukes, N.J. and Cairncross, B. (2003). New interpretation of the origin of tiger’s-eye: comment and reply. Geology, e44-e45. mb-minerals.de; P.F. Ledwaba (2014) Tiger’s eye in the Northern Cape Province — potential for employment creation and poverty alleviation. The Journal of The Southern African Institute of Mining and Metallurgy 114:881-885
UK
 
  • England
    • Cornwall
      • Lizard Peninsula
        • Landewednack
Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
USA
 
  • Arizona
    • Gila Co.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 346; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 84.
  • Montana
    • Madison Co.
Gobla, M.J. (2012) Montana mineral locality index. Rocks & Minerals, 87, #3, 208-240.
Mineral and/or Locality  
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