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File:San Pedro rapakivi.jpg

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Summary

Description
English: This image shows a sample of the San Pedro Quartz Monzonite, exposed in the San Pedro Mountains of New Mexico, USA. This monzonite has a radiometric age of 1730 million years and was likely part of an island arc that accreted to North American during the Yavapai Orogeny. The sample here shows rapakivi texture, in which oval potassium feldspar crystals have a oligoclase rim. This is particularly noticeable in the grain right of center.
Date
Source Own work
Author Kent G. Budge

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I, the copyright holder of this work, hereby publish it under the following license:
Creative Commons CC-Zero This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication.
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.

Captions

Sample of San Pedro quartz monzonite showing rapakivi texture

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29 October 2016

0.01666666666666666666 second

12.8 millimetre

image/jpeg

1,783,113 byte

2,112 pixel

2,816 pixel

1540c1812d59fdfdb620b4463efa0d232010734c

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Date/TimeThumbnailDimensionsUserComment
current18:49, 4 July 2020Thumbnail for version as of 18:49, 4 July 20202,816 × 2,112 (1.7 MB)Kent G. BudgeUploaded own work with UploadWizard

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