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Orbicular Jasper

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About Orbicular JasperHide

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 for gemological information about Orbicular Jasper.

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
Agate3 photos of Orbicular Jasper associated with Agate on
Carnelian2 photos of Orbicular Jasper associated with Carnelian on

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

ⓘ - 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.
  • Mahajanga Province (Majunga)
    • Sofia Region
      • Analalava District
        • Ambolobozo Commune
Lieber, W. (2003): Sphärolithischer Chalcedon von Madagaskar. LAPIS 28 (9), 18-22
Andrey S. Gorshkov specimen from Korgon river
  • 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).
  • 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;
  • South Dakota
    • Jackson Co.
SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
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