The name apophyllite refers to a specific group of phyllosilicates, a class of minerals. Originally, the group name referred to a specific mineral, but was redefined in 1978 to stand for a class of minerals of similar chemical makeup that comprise a solid solution series, and includes the members fluorapophyllite-(K), fluorapophyllite-(Na), hydroxyapophyllite-(K).
Interesting facts are that some apophyllite specimens exhibit fluorescence under UV light, adding to their visual interest. Apophyllite is related to the zeolite group of minerals, known for their porous structures and ability to absorb water. The name "apophyllite" is derived from the Greek words "apo" (meaning "off") and "phyllon" (meaning "leaf"), referring to the tendency of the mineral to exfoliate or flake when heated.
MEASUREMENT DETAILS:
MINERAL #1 - 1.50"L x 1.25"W x 1.50"H
MINERAL #2 - 2.75"L x 1.75"W x 1.25"H
MINERAL #3 - 1.75"L x 1"W x 1"H