File:Hydrothermal quartz crystals (Late Pennsylvanian to Permian; Coleman Quartz Mine, Arkansas, USA) 3.jpg
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Summary
| Description |
English: Hydrothermal quartz crystals from the Late Paleozoic of Arkansas, USA.
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 quartz crystals seen here are from a hydrothermal quartz vein intruding the Middle Ordovician Blakely Sandstone. Well-formed hexagonal quartz crystals are common at the Coleman Mine. The crystals are clear/colorless (“rock crystal”) or whitish (“milky quartz”). 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@N05/51021755857/ |
| 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@N05/51021755857. It was reviewed on 11 March 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 | |
|---|---|---|---|---|---|
| current | 21:11, 11 March 2021 | | 2,417 × 1,406 (2.31 MB) | Ser Amantio di Nicolao | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/51021755857/ with UploadWizard |
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