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Moss Opal

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About Moss OpalHide

A variety of Opal

Opal with dendritic inclusions, usually green silicates.

Visit for gemological information about Moss Opal.

Common AssociatesHide

Associated Minerals Based on Photo Data:
2 photos of Moss Opal associated with ChalcedonySiO2
1 photo of Moss Opal associated with QuartzSiO2
1 photo of Moss Opal associated with Agate

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.

Internet Links for Moss OpalHide

Localities for Moss OpalHide

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
    • Kalgoorlie-Boulder Shire
      • Black Flag Goldfield
        • Grant's Patch
Fetherston, J., Stocklmayer, S., Stocklmayer, V. (2013): Gemstones of WA, Geological Survey of WA
  • Lower Austria
    • Waidhofen an der Thaya District
      • Waldkirchen an der Thaya
R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
Mineral Collector 10:118 (1903)
  • Karaganda Region
    • Zhanaarka
Gems of Kazakhstan, - textbook, Almaty, 1999, v.1, pp. 71-73 (in Rus.)
  • Košice Region
    • Košice-okolie District
Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590
    • Trebišov District
      • Kuzmice
  • Andalusia
    • Almería
      • Níjar
        • Cabo de Gata Volcanic Complex
- Calvo Rebollar, M. (2016) Minerales y Minas de España. Vol. VIII, Cuarzo y otros minerales de la sílice. Escuela Técnica Superior de Ingenieros de Minas de Madrid. Fundación Gómez Pardo, 399 pages (in Spanish, with plate captions also in English).
  • California
    • Amador Co.
      • Fiddletown Mining District (Oleta Mining District)
        • River Pines
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10259764.
    • Fresno Co.
      • Fresno
        • Mountains East of Fresno
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 282.
    • Kern Co.
      • California City
Stoddard, B.H. (1923), Gems and precious stones Mineral Resources U.S., 1920, part 2: 215-218; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 282.
    • Tuolumne Co.
      • Chinese Station
Matthew Stanley Collection
  • Colorado
    • Yuma Co.
      • Republican River
Minerals of Colorado (1997) E.B. Eckel
  • Kansas
Jay Ellis Ransom,1974, Gems and Minerals of America
Ransom, 1974. Gems and Minerals of America
Ransom, 1974. Gems and Minerals of America
  • Nebraska
Jay Ellis Ransom,1974,Gems and Minerals of America
    • Morrill Co.
MacFall (1975) Gem Hunter's Guide
  • New Mexico
    • Socorro Co.
The Mineralogist, v. 9, no. 5, p. 181.
  • Oregon
    • Lake Co.
Extra Lapis - English No. 10 Opal
Mineral and/or Locality  
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