#TeamQuartz

I'm starting a #geology thread with #GlacialErratics I found in my region (Västerbotten, Sweden. Last glaciation: Weichsel, ended ca. 10ky ago).The first one is a porphyry.Found in: Umeå (esker)Probably from:
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It's 2020, the year where anything can happen.The #MinCup2020 bracket is sticking to the rules with all official minerals. Voting starts September 1st.Who will join legends #Olivine (2017), #Garnet (2018),
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