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Keywords from Image Description:
Birnessite Rancieite Microcline Aegirine DemixVarennes quarry SaintAmable sill Quebec Canada. Pseudomorph of birnessite after serandite Thanks to Laszlo Horvath for information regarding the rancieite Most such PS at STA are jet black Perhaps this one has not yet altered completely The microcline is white Aegirine tufts are olive