#ThinSectionThursday 2019 A lovely skeletal olivine crystal in variolitic microgabbro from the chilled margin of the Rum layered intrusion under Beinn nan Stac, Rum. Collected by Henry Emeleus. FOV 2mm wide. pic.twitter.com/9LathglaYW
— John Faithfull (@FaithfullJohn) January 3, 2019
via Twitter https://twitter.com/FaithfullJohn
January 03, 2019 at 03:21PM
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