#Bornite

One of the interesting aspects of #Bornite is how it defies the simplistic model of ionic bonding and charge. For example, if I give you a plag: CaAl₂Si₂O₈, few would
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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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