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15 points
PSILOMELANE is no goodvalid
Not a playable Scrabble word in NWL2023.
an oxide of manganese, usually with barium, etc., occurring in smooth black botryoidal masses [n -S]
Not a playable Scrabble word in NWL2023.
an oxide of manganese, usually with barium, etc., occurring in smooth black botryoidal masses [n -S]