Agate
by Steve Lowry/science Photo Library
Title
Agate
Artist
Steve Lowry/science Photo Library
Medium
Photograph - Photograph
Description
Polarised light micrograph of a thin section of agate from Blue Hole, Usan, Montrose, Scotland. Agate is a form of fine grained microcrystalline quartz. This image shows banded layers of chalcedony. Although agate can be found in a range of rock types it is predominantly associated with metamorphic rock. It is a brightly coloured, banded, semi-precious gemstone which is the birth stone for Gemini. Magnification: x14 at 10cm wide.
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October 7th, 2018
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