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Orbicular Jasper

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Madagascar

A variety of Chalcedony

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.

Classification of Orbicular Jasper

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Other Names for Orbicular Jasper

Synonyms:
Ocean AgateOcean JasperOrbicular AgatePoppy Jasper
German names:
Ozeanachat

Other Information

Health Warning: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 Jasper

Search Engines:
  • Look for Orbicular Jasper on Google
  • Look for Orbicular Jasper images on Google
    • Mineral Dealers:
  • Fine Minerals from Dan Weinrich Minerals
  • The Arkenstone - Fine Minerals
  • rare and unusual minerals mainly crystallized
  • Wright's Rock Shop - excellent mineral specimens since 1970
  • Rare and Unusual minerals at Mineralogical Research Company
  • Buy Minerals and Crystals from Crystalarium.com
  • Buy fine minerals and gemstones from Pala International
  • Lapis Mineral Magazin
  • Wilensky Fine Minerals
  • High-end worldwide specimens & outstanding customer service
  • Search for Orbicular Jasper at Thames Valley Minerals
  • Top quality minerals from Kristalle of California
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    Localities for Orbicular Jasper

    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Madagascar
     
    • Mahajanga (Majunga) Province
      • Sofia Region
        • Analalava Department
          • Ambolobozo
    		Lieber, W. (2003): Sphärolithischer Chalcedon von Madagaskar. LAPIS 28 (9), 18-22
    USA
     
    • California
      • Santa Clara Co.
    		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
    Google
     
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    Copyright © Jolyon & Ida Ralph 1993-2008. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register.