File:Chromitite (Shetland Ophiolite Complex, ~425-500 Ma; chromite mine at Nikka Vord, Unst, Shetland Islands, North Sea).jpg

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English: Chromitite (5.2 cm across) with chromite (black) & talc and/or antigorite (whitish).

This is from an ophiolite complex (Shetland Ophiolite Complex; a.k.a. Unst Ophiolite Complex) exposed on the island of Unst in the northeastern Shetland Islands (in the North Sea, between Scotland & Norway). The rocks in the area represent ~basal crustal rocks metamorphosed during the Caledonian Orogeny (~425-500 million years ago). Published research indicates that the original rocks were from a late Neoproterozoic-Cambrian intracontinental, ocean-floored rift basin.

Locality: abandoned chromite mine at Nikka Vord, island of Unst, northeastern Shetland Islands, North Sea.

Ophiolites are fragments of oceanic lithosphere (basaltic crust + uppermost mantle) that have been metamorphosed and plastered onto the edges of continental lithospheric plates by obduction (the opposite of subduction).
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Source https://www.flickr.com/photos/47445767@N05/14635783237/
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@N05/14635783237. It was reviewed on 12 November 2022 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

12 November 2022

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current18:54, 12 November 2022Thumbnail for version as of 18:54, 12 November 20221,209 × 1,171 (1.29 MB)Ser Amantio di Nicolao (talk | contribs)Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/14635783237/ with UploadWizard

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