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About Chrome-ChalcedonyHide

A variety of Chalcedony

A variety of chalcedony colored deep green by Cr compounds. (Compare with the more common Chrysoprase variety of chalcedony, which is colored by nickel.) Chrome chalcedony found in an ancient Roman gem collection may have come from one of the chromium deposits in what is now Turkey. Present commercial production comes from Zimbabwe under the trade name "mtorolite", and from Bolivia under the trade name "chiquitanita".

Visit gemdat.org for gemological information about Chrome-Chalcedony.

Chemical Properties of Chrome-ChalcedonyHide

Common Impurities:

Synonyms of Chrome-ChalcedonyHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Agate1 photo of Chrome-Chalcedony associated with Agate 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 Chrome-ChalcedonyHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Phillips, G. & Brown, G. (1989) Mtorolite. Australian Gemmologist, 17, 205-207.
Webster, R. (1994) Gems: their sources, description and identification. 5th ed., P.G. Read (ed). (Butterworths, London)
Hyrsl, J. & Petrov, A. (1998) Journal of Gemmology, 26, 1, 43.

Internet Links for Chrome-ChalcedonyHide

Localities for Chrome-ChalcedonyHide

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.
  • Western Australia
    • Meekatharra Shire
      • Sylvania Station
Fetherston, J.M., Stocklmayer, S.M., Stocklmayer, V.C. (2013) Gemstones of Western Australia. Geological Survey of Western Australia, Mineral Resources Bulletin 25, 306p.
    • Roebourne Shire
      • Karratha
Fetherston, J., Stocklmayer, S., Stocklmayer, V(2013): Gemstones of WA, Geological Survey of WA
  • Santa Cruz
    • Chiquitos Province
Jaroslav Hyrsl and Alfredo Petrov (1998) Journal of Gemmology, 26, 1, 43.
  • Central Anatolia Region
    • Eskişehir Province
Cigdem Lule-Whipp (2006) Gems & Gemology, 42, 115.
  • Marmara Region
    • Bursa Province
      • Tavşanlı Zone
        • Harmancık
  • Manicaland
    • Mutare District (Umtali District)
Bartholomew, D. S. (1990). Base metal and industrial mineral deposits of Zimbabwe. Zimbabwe Geological Survey, Mineral Resources Survey No. 22
  • Mashonaland Central
    • Guruve District
Bartholomew, D. S. (1990). Base metal and industrial mineral deposits of Zimbabwe. Zimbabwe Geological Survey, Mineral Resources Survey No. 22
  • Mashonaland West
    • Makonde District (Lomagundi District)
Lapidary Journal, vol. 21, 1967, pp. 1188-1189
Mineral and/or Locality  
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