File:Hydrothermal quartz & sandstone (Coleman Quartz Mine, Ouachita Mountains, Arkansas, USA) 3.jpg
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English: The Ouachita Mountains of Arkansas were formed during the Late Paleozoic Ouachita Orogeny. That mountain forming event was accompanied by the intrusion of hydrothermal quartz veins in some areas. The Coleman Quartz Mine allows for close examination and collection of spectacular quartz crystals from these veins.
The whitish blocks seen here are hydrothermal quartz vein rocks of Late Pennsylvanian to Permian age. These quartz veins intruded reddish-brown colored quartzose sandstones of the Middle Ordovician Blakely Sandstone. Location: Coleman Quartz Mine, south of Jessieville, northern Garland County, west-central Arkansas, USA (34º 39.700' North latitude, 93º 06.072' West longitude) |
| Date | |
| Source | https://www.flickr.com/photos/47445767@N05/51743831709/ |
| Author | James St. John |
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/51743831709. It was reviewed on 22 December 2021 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 | 16:47, 22 December 2021 | | 3,008 × 2,000 (4.86 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/51743831709/ with UploadWizard |
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