Subj : ES Picture of the Day 20  2022
To   : All
From : Dan Richter
Date : Wed Jul 20 2022 12:01:28

 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

-
   Earth Science Picture of the Day is a service of the  Universities
   Space Research Association.

https://epod.usra.edu
 
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