We can't have biotite lose, vote for #TeamBiotite #TeamMetamorphic. Here some beautiful examples of biotite reaction textures, can you guess the mineral reaction? #MinCup2018 pic.twitter.com/lyhnb6lDld
— Dr Barbara Kunz (@KunzBE) September 5, 2018
via Twitter https://twitter.com/KunzBE
September 05, 2018 at 09:11PM
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