File:Graphite granite with amazonite (Kenticha Pegmatite Field, Early Cambrian, 530 Ma; south of Konso, Ethiopia).jpg

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English: Graphic granite from the Cambrian of Ethiopia. (~5.7 centimeters across at its widest)

Whitish-gray = potassium feldspar (KAlSi3O8) Dark gray = quartz (SiO2) Greenish = amazonite feldspar (KAlSi3O8)

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, Hebrew, or Arabic writing. These rocks occur in pegmatitic granite intrusions.

Geologic unit: unrecorded / undisclosed igneous body in the Kenticha Pegmatite Field, Early Cambrian, 530 Ma

Locality: unrecorded / undisclosed site south of the town of Konso, western Sidamo Province, southern Ethiopia
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Source https://www.flickr.com/photos/47445767@N05/52326413167/
Author James St. John

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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/52326413167. It was reviewed on 26 March 2024 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

26 March 2024

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current19:36, 26 March 2024Thumbnail for version as of 19:36, 26 March 20242,995 × 2,409 (4.3 MB)Ser Amantio di Nicolao (talk | contribs)Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/52326413167/ with UploadWizard

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