File:Uraniferous, pyritic, quartz-pebble conglomerate 2.jpg

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Original file (3,268 × 2,648 pixels, file size: 7.02 MB, MIME type: image/jpeg)

Captions

Captions

Add a one-line explanation of what this file represents

Summary

[edit]
Description
English: This rock does not have a label, but it's a crack sample of quartz-pebble conglomerate with detrital pyrite grains between the quartz pebbles (click on the photo once or twice to zoom in & see the brassy gold-colored pyrite). Detrital pyrite only occurred at Earth's surface in the early Precambrian, when the atmosphere had little to no free oxygen gas (O2). This rock is also radioactive - it contains uranium (probably detrital uraninite, UO2). Detrital pyrite and uraninite are classic pieces of geologic evidence for the lack of oxygen in early air. I suspect this sample comes from South Africa's Witwatersrand Group. If so, the rock may also be a gold ore.
Date
Source https://www.flickr.com/photos/47445767@N05/51191714299/
Author James St. John

Licensing

[edit]
w:en:Creative Commons
attribution
This file is licensed under the Creative Commons Attribution 2.0 Generic license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/51191714299. It was reviewed on 20 May 2021 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

20 May 2021

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current16:47, 20 May 2021Thumbnail for version as of 16:47, 20 May 20213,268 × 2,648 (7.02 MB)Ser Amantio di Nicolao (talk | contribs)Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/51191714299/ with UploadWizard

You cannot overwrite this file.

There are no pages that use this file.

Metadata

This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:Uraniferous,_pyritic,_quartz-pebble_conglomerate_2.jpg&oldid=878865455"