MSGID: 1:317/3 62d842f9   
   PID: hpt/lnx 1.9.0-cur 2019-01-08   
   TID: hpt/lnx 1.9.0-cur 2019-01-08   
    EPOD - a service of USRA   
      
   The Earth Science Picture of the Day (EPOD) highlights the diverse processes   
   and phenomena which shape our planet and our lives. EPOD will collect and   
   archive photos, imagery, graphics, and artwork with short explanatory   
   captions and links exemplifying features within the Earth system. The   
   community is invited to contribute digital imagery, short captions and   
   relevant links.   
      
      
    Dendrite Inclusion in Opal   
      
      July 20, 2022   
      
      
       Opal   
      
      Photographer:  Mila Zinkova   
      
      Summary Author:  Mila Zinkova   
      In an  earlier Earth Science Picture of the Day, I showed   
       dendrite crystals in  amber. This type of crystal, typically   
      formed from  metal oxides, has also been observed in precious   
       opals found in Ethiopia, as featured above. However, in opals, the   
      dendrites are sometimes presented as 3D like plumes.  Click here to   
      see a video of this amazing opal with dendrite inclusions. It really   
      does look like a magical forest.   
      
      
   Related EPODs   
      
       Dendrite Inclusion in Opal  New Eddystone Rock  Varvite Park   
      in Brazil  Volcanic Tunnels of Reunion Island  The Castles of the   
      Calchaquíes Valleys  Culburra Beach Sand Layers Following Wildfires   
       More...   
      
   Geology Links   
      
        *  Earthquakes   
        *  Geologic Time   
        *  Geomagnetism   
        *  General Dictionary of Geology   
        *  Mineral and Locality Database   
        *  Mohs Scale of Mineral Hardness   
        *  This Dynamic Earth   
        *  USGS   
        *  MyShake - University of California, Berkeley   
        *  USGS Ask a Geologist   
        *  USGS/NPS Geologic Glossary   
        *  USGS Volcano Hazards Program   
      
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      Earth Science Picture of the Day is a service of the  Universities   
      Space Research Association.   
      
   https://epod.usra.edu   
       
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