A 59 million year old gabbro from central Arran, viewed under a microscope. Colourful pyroxenes, white/grey plagioclase, and black magnetite. #ThinSectionThursday pic.twitter.com/dOE8gaQ0Sj
— ArranGeopark (@arrangeopark) May 31, 2018
via Twitter https://twitter.com/arrangeopark
May 31, 2018 at 01:40PM
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