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i guess #2 is corund and #4 is fluorite #6 calcite, #7 smithsonite, #8 dolomite,
Sir plz make lacture on optical mineralogy
Where's the cheat-sheet !? 😅
i guess #2 is corund and #4 is fluorite #6 calcite, #7 smithsonite, #8 dolomite,
Sir plz make lacture on optical mineralogy
Where's the cheat-sheet !? 😅