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Image: Iddingsite

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Original image(3,648 × 2,736 pixels, file size: 2.89 MB, MIME type: image/jpeg)

Description: A mantle xenolith of peridotite, showing chemical weathering of olivine (green) to iddingsite (brown). The most likely cause of this alteration (or difference in amount of alteration) is the fracture surface: the rock was fractured first exposing the right side of the peridotite, then later, the left side, keeping it fresher and less chemically weathered.
Title: Iddingsite
Credit: I (QFL 24-7 bla ¤ cntrb ¤ kids ¤ pics ¤ vids) created this work entirely by myself. (Original uploaded on en.wikipedia)
Author: Matt Affolter (Transfered by Sporti/Original uploaded by Matt Affolter)
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC BY-SA 3.0
License Link: http://creativecommons.org/licenses/by-sa/3.0
Attribution Required?: Yes

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