File:Fuchsitic quartzite (Paleoproterozoic; Medicine Bow Mountains, Wyoming, USA) 2 (31894781626).jpg
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| Description |
Quartzite from the Precambrian of Wyoming, USA. (3.2 cm across) Quartzite is a coarsely crystalline-textured, quartzose metamorphic rock. It forms by intermediate to high grade metamorphism of sandstone. The greenish coloration is from the presence of fuchsite (= chromian muscovite mica). Stratigraphy: undetermined (transported float), but possibly from the Medicine Peak Quartzite or the Lookout Formation, Paleoproterozoic Locality: loose piece from roadcut on the northern side of Rt. 130 (Snowy Range Road), immediately west of the intersection with Brooklyn Lake Road, eastern flanks of the Medicine Bow Mountains, southeastern Wyoming, USA (41° 21’ 25.95” North latitude, 106° 14’ 09.11” West longitude) |
| Date | |
| Source | Fuchsitic quartzite (Paleoproterozoic; Medicine Bow Mountains, Wyoming, USA) 2 |
| 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@N05/31894781626 (archive). It was reviewed on 22 October 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 05:54, 22 October 2019 | | 2,072 × 1,641 (2.53 MB) | Rudolphous (talk | contribs) | Transferred from Flickr via #flickr2commons |
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