It's not all orthogneiss. Near Clachtoll, porphyroblasts of blue-green kyanite and euhedral brown staurolite in pale-green white-mica-rich matrix. Lovely #geology and #rocks. You simply have to #lovethelewisian... pic.twitter.com/otQ1lsbbSc
— Tim Johnson (@Wonkiergruff1) September 5, 2018
via Twitter https://twitter.com/Wonkiergruff1
September 05, 2018 at 12:02PM
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