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File:Thunder egg quartz (Laton Point, south of Buchanan, Oregon, USA) (32785493225).jpg

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Quartz ("Thunder Egg") from the Tertiary of Oregon, USA.

"Thunder eggs" are agate- and/or quartz-filled masses that fill former cavities in volcanic rocks (see Colburn, 2004 for more info.).

Locality: Laton Point, south of Buchanan, northeastern Harney County, eastern Oregon, USA

Reference cited:

Colburn (2004) - The Formation of Thundereggs (Lithophysae). 493 pp. (<a href="http://www.cvmineralclub.org/MAIN/Pages/Members Articles/Jack Marcy/The Formation of Thundereggs-Revised 2004.pdf" rel="nofollow">www.cvmineralclub.org/MAIN/Pages/Members%20Articles/Jack%...</a>) (This long document may take a little while to load on your computer.)
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Source Thunder egg quartz (Laton Point, south of Buchanan, Oregon, USA)
Author James St. John

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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/32785493225. It was reviewed on 5 December 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

5 December 2019

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Date/TimeThumbnailDimensionsUserComment
current02:03, 5 December 2019Thumbnail for version as of 02:03, 5 December 20192,240 × 2,612 (2.26 MB)Ser Amantio di Nicolao (talk | contribs)Transferred from Flickr via #flickr2commons

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