Wikimedia Commons

File:Graphic granite (Brunswick Pegmatite Field, Devonian-Permian; Fisher Quarry, north of Topsham, Maine, USA) 1.jpg

Original file ‎(2,620 × 2,592 pixels, file size: 4.03 MB, MIME type: image/jpeg)

Captions

Captions

Add a one-line explanation of what this file represents

Summary

edit
Description
English: White = potassium feldspar (KAlSi3O8)

Dark gray = quartz (SiO2)

Graphic granite, also known as runic granite or runite, has an odd but distinctive type of crystalline texture. Graphic granites are typically bimineralic and consist of interpenetrating crystals of quartz and potassium feldspar). The resulting texture somewhat resembles ancient writing (“graphic”). Observed examples resemble Cuneiform and Arabic writing. These rocks occur in pegmatitic granite intrusions.

Geologic unit: Fisher Pegmatite (Fisher Quarry Pegmatite), Brunswick Pegmatite Field, Devonian to Permian

Locality: Fisher Quarry, north-northeast of the town of Topsham, Sagadahoc County, southwestern Maine, USA (43° 57' 35.17" North latitude, 69° 56' 55.82" West longitude)
Date
Source https://www.flickr.com/photos/47445767@N05/51006550808/
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@N05/51006550808. It was reviewed on 8 March 2021 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

8 March 2021

File history

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

Date/TimeThumbnailDimensionsUserComment
current15:22, 8 March 2021Thumbnail for version as of 15:22, 8 March 20212,620 × 2,592 (4.03 MB)Ser Amantio di Nicolao (talk | contribs)Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/51006550808/ 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:Graphic_granite_(Brunswick_Pegmatite_Field,_Devonian-Permian;_Fisher_Quarry,_north_of_Topsham,_Maine,_USA)_1.jpg&oldid=644328904"