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Blue Chalcedony

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About Blue ChalcedonyHide

A variety of Chalcedony

Blue colour caused by the Tyndall effect (light scattering by colloid sized particles). Transmitted light looks yellowish or reddish rather than blue.

Pronounciation of Blue ChalcedonyHide

PlayRecorded byCountry
Debbie WoolfUnited Kingdom

Chemical Properties of Blue ChalcedonyHide


Common AssociatesHide

Associated Minerals Based on Photo Data:
Mordenite7 photos of Blue Chalcedony associated with Mordenite on
Quartz2 photos of Blue Chalcedony associated with Quartz on
Apophyllite2 photos of Blue Chalcedony associated with Apophyllite on
Agate1 photo of Blue Chalcedony associated with Agate on
Smithsonite1 photo of Blue Chalcedony associated with Smithsonite on
Monheimite1 photo of Blue Chalcedony associated with Monheimite on
Greenalite1 photo of Blue Chalcedony associated with Greenalite on
Phosphorite1 photo of Blue Chalcedony associated with Phosphorite on
Okenite1 photo of Blue Chalcedony associated with Okenite on
Stilbite subgroup1 photo of Blue Chalcedony associated with Stilbite subgroup 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 Blue ChalcedonyHide

Localities for Blue ChalcedonyHide

ⓘ - 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.
  • Honshu Island
    • Chubu region
      • Shizuoka prefecture
        • Nishiizu
Alfredo Petrov, field trip observations, December 2010
  • Chiwawy-Nsanje District
Vik Vanrusselt Collection
  • Otjozondjupa Region
    • Omatako
Ernst Schnaitmann specimen
  • Beja District
    • Serpa
      • Vale de Vargo
Rui Nunes info
  • Maramureș Co.
    • Șișești Commune
      • Șurdești village
Nicu Pascanu Collection, nr. 357
  • Central Anatolia Region
    • Eskişehir Province
      • Saricakaya
"Dan Costian" Collection
  • California
    • Amador Co.
      • Volcano District
        • Volcano
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10028324.
  • Nebraska
    • Dawes Co.
Pabian, Roger (1993) The Minerals and Gemstones of Nebraska, Nebr. Conservation & Survey Div. Educational Circular No. 2.
  • Washington
    • Kittitas Co.
      • Swauk District
        • Liberty
Douglas Schonewald specimens
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