File:Chalcocite-malachite veins in sandstone (Flagstaff Formation, Paleocene; Salina Canyon, Utah, USA) 1.jpg

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English: The dark bands are veins with copper mineralization in a Tertiary-aged sandstone from central Utah's Salina Canyon. The rock was adjacent to a striking angular unconformitiy. Copper-bearing fluids that moved along the contact resulted in patchy mineralization in fractures both above & below the erosion surface. These veins are cored by what appears to be chalcocite, a black, metallic-lustered, copper sulfide mineral (Cu2S). The greenish areas are malachite, a hydrous copper carbonate mineral

Host rock: sandstone of the basal Flagstaff Formation, mid-Paleocene

Locality: loose piece near old copper mine, Salina Canyon, southeast of the town of Salina, Sevier County, central Utah, USA
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Source https://www.flickr.com/photos/47445767@N05/49967133961/
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@N05/49967133961. It was reviewed on 2 December 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

2 December 2020

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current19:39, 2 December 2020Thumbnail for version as of 19:39, 2 December 20203,298 × 1,546 (4.15 MB)Ser Amantio di Nicolao (talk | contribs)Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/49967133961/ with UploadWizard

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