(K,Na)Ca 4 Si 8 O 20 (OH,F) 8H 2 O
Crystallized apophyllite with a white-transparent color typical of the mineral.
The apophyllite mineral is directly related to volcanism and volcanic rocks, and for this reason it is common to find this group of minerals together with zeolites of volcanic origin.
The mineral includes a label with the name and origin and is attached to a cardboard box. 4 cm square.
*The price is per unit (a single cardboard box of the four shown in the photo)
Since the minerals are natural, you will receive a piece similar to the one in the photograph. The minerals come in cardboard boxes and are glued to a porex base with hot silicone; these can be removed using ethyl alcohol without damaging the mineral. The size is approximate.