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Quartz - Agateplate, redbrown-white
 

 

 

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Source page:

http://commons.wikimedia.org/wiki/File:Eclogite_Almenning,_Norway.jpg

Description Almenning, Norway. The red-brown mineral is garnet, green omphacite and white quartz.

Formed at temperature of about 600°C and pressures of 25 kbar (depth 60-70 km) Here's a paper on them: ansatte.uit.no/kku000/hardrock/index_files/pd fs/Cuthbert_...

Bought from Northern Geological Supplies for £12, but they do sell little ones 2x2" at £2.40 !
Date 16 February 2011(2011-02-16), 12:03
Source eclogite
Author Kevin Walsh from Bicester, England

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Checked copyright icon.svg This image, originally posted to Flickr, was reviewed on March 28, 2011 by the administrator or reviewer File Upload Bot (Magnus Manske), who confirmed that it was available on Flickr under the above license on that date.


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