Apophyllite crystallizes as pseudo-cubic crystals, granular masses, natural pyramidal structures, and as druse upon other minerals. It can occur in green, white, grayish, yellowish, rose-red tint, and clear/colorless forms. Apophyllite was first reported in 1806 and was named for the Greek words meaning “get” and “leaf,” due to its tendency to exfoliate when heated under a blowpipe.
Drusy is a coating of tiny crystals.
Chemical composition: KFCₐ(SiO₅)₄ 8H₂O; Hardness 4.5 – 5