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Iolite

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About IoliteHide

Formula:
(Mg,Fe)2Al3(AlSi5O18)
A variety of Cordierite

Name for gem-grade, violet-blue cordierite.

Visit gemdat.org for gemological information about Iolite.


Chemical Properties of IoliteHide

Formula:
(Mg,Fe)2Al3(AlSi5O18)

Common AssociatesHide

Associated Minerals Based on Photo Data:
Cordierite3 photos of Iolite associated with Cordierite on mindat.org.
Pyrrhotite3 photos of Iolite associated with Pyrrhotite on mindat.org.
Almandine2 photos of Iolite associated with Almandine on mindat.org.
Biotite2 photos of Iolite associated with Biotite on mindat.org.
Sillimanite1 photo of Iolite associated with Sillimanite 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 IoliteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Werner, A. G. (1807)

Internet Links for IoliteHide

Localities for IoliteHide

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
 
  • Northern Territory
    • Central Desert Region
      • Harts Range (Harts Ranges; Hartz Range; Hartz Ranges)
        • Ambalindum Station
          • Spriggs Creek Bore (Spriggs Bore)
Thompson, D. (ed.) (1986), A Fossicking Guide to the Northern Territory, Northern Territory Geological Survey, Northern Territory Department of Mines and Energy, 2nd ed., 73p, 1986
Thompson, D. (ed) (1986) A Guide to Fossicking in the Northern Territory. Northern Territory Geological Survey, Northern Territory Department of Mines and Energy, 2nd ed., 73p.
Brazil
 
  • Minas Gerais
Karel Bal Collection
Canada
 
  • British Columbia
    • Slocan Mining Division
Minfile 082FNW259
Myanmar
 
  • Mandalay Region (Mandalay Division)
    • Pyin-Oo-Lwin District
      • Mogok Township
        • Chaung-gyi
Ted Themelis (2008) Gems & mines of Mogok
        • Kyauk-Pyat-That
Ted Themelis (2008) Gems & mines of Mogok
        • Mogok Valley
Ted Themelis (2008) Gems & mines of Mogok
Ted Themelis (2008) Gems & mines of Mogok
Sri Lanka
 
  • Central Province
Dissanayake, C. B., Chandrajith, R. O. H. A. N. A., & Tobschall, H. J. (2000). The geology, mineralogy and rare element geochemistry of the gem deposits of Sri Lanka. BULLETIN-GEOLOGICAL SOCIETY OF FINLAND, 72(1/2), 5-20.
  • Western Province
Dissanayake, C. B., Chandrajith, R. O. H. A. N. A., & Tobschall, H. J. (2000). The geology, mineralogy and rare element geochemistry of the gem deposits of Sri Lanka. BULLETIN-GEOLOGICAL SOCIETY OF FINLAND, 72(1/2), 5-20.
Mineral and/or Locality  
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