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Orbicular Jasper

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Orbicular Jasper is a name given to a highly silicified rhyolite or tuff that has quartz and feldspar crystallized into radial aggregates of needle-like crystals forming orbicular (spherical) structures.

It is often used as a decorative stone.

Visit gemdat.org for gemological information about Orbicular Jasper.


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Synonyms of Orbicular JasperHide

Other Language Names for Orbicular JasperHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Quartz5 photos of Orbicular Jasper associated with Quartz on mindat.org.
Agate3 photos of Orbicular Jasper associated with Agate on mindat.org.
Carnelian2 photos of Orbicular Jasper associated with Carnelian 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.

Internet Links for Orbicular JasperHide

Localities for Orbicular JasperHide

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.
Madagascar
 
  • Mahajanga Province (Majunga)
    • Sofia Region
      • Analalava District
        • Ambolobozo
Lieber, W. (2003): Sphärolithischer Chalcedon von Madagaskar. LAPIS 28 (9), 18-22
Russia
 
  • Urals Region
    • Southern Urals
      • Chelyabinsk Oblast'
        • Kizil'skii district
Leonova L.V., Pribavkin S.V., Gulyaeva T.Ya. (2003) Concretions from Paleozoic silicites of Southern Ural, - Mineralogicheskoe Obscchestvo, Vestnik Ural'skogo Otdeleniya, №2, pp. 61-65 (in Russian).
  • Western-Siberian Region
Andrey S. Gorshkov specimen from Korgon river
USA
 
  • Arizona
    • Cochise Co.
      • Benson
Van King
  • California
    • Santa Clara Co.
      • Santa Cruz Mts
        • Paradise Valley
Melhase, John (1934), A diversity of many fine minerals available in California for collectors: Oregon Mineralogist: 2(7): 7; Mineralogist, The (1935): 3(3): 34; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 318; www.cst.cmich.edu/users/dietr1rv/jasper.htm
  • South Dakota
    • Jackson Co.
SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
Mineral and/or Locality  
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