File:Chlorite after garnet (Precambrian; Michigamme Mine, Michigamme, Michigan, USA).jpg

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

Original file ‎(573 × 682 pixels, file size: 380 KB, MIME type: image/jpeg)

Captions

Captions

Add a one-line explanation of what this file represents

Summary

[edit]
Description
English: “Black Diamond” - chamosite chlorite pseudomorph after almandine garnet from the Precambrian of Michigan, USA. (2.8 centimeters across)

Seen here is a decent-sized chlorite pseudomorph after garnet from the Michigamme Mine, an old iron mine in northern Michigan. During mining days, these "black diamonds" were frustrating waste products - they frequently damaged the rock-crushing equipment. Michigamme Mine's black diamonds have the shape of the original 12-sided garnet crystals. The greenish-black material that now makes up these specimens is chamosite chlorite: (Fe+2,Mg,Fe+3)5Al(Si3,Al)O10(OH,O)8 - iron magnesium hydroxy-oxy-aluminosilicate. A mineral that replaces another mineral, but retains the original crystal form is called a "pseudomorph" ("false-form").

Locality: Michigamme Mine, town of Michigamme, Upper Peninsula of Michigan, USA
Date
Source https://www.flickr.com/photos/47445767@N05/8282176506/
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@N05/8282176506. It was reviewed on 14 December 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

14 December 2020

File history

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

Date/TimeThumbnailDimensionsUserComment
current16:03, 14 December 2020Thumbnail for version as of 16:03, 14 December 2020573 × 682 (380 KB)Ser Amantio di Nicolao (talk | contribs)Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/8282176506/ 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:Chlorite_after_garnet_(Precambrian;_Michigamme_Mine,_Michigamme,_Michigan,_USA).jpg&oldid=895777582"