APOPHYLLITE is validvalid

a mineral, hydrated calcium potassium silicate, that exfoliates on heating

145,928 of 196,601 in NWL2023·also valid in CSW24

a mineral, hydrated calcium potassium silicate, that exfoliates on heating

10,746 of 280,887 in CSW24·also valid in NWL2023

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