GREEN APOPHYLLITE
Green Apophyllite Cubic Crystals with Stilbite. Technically now known as Fluorapophyllite. This is a very popular mineral. This specimen has lovely pastel green crystals along with the clear Stilbite and on a nice natural matrix.
Location:
Deccan Plateau, Bidkin, India.
Dimensions:
12cm x 9cm x 5cm, 398g.
Fluorapophyllite (K) KCa4(Si8O20)(F,OH) · 8H2O
Apophyllite was named in 1806 by Rene Just Haüy from the Greek for “away from” (apo) and “leaf” (phyllos), in allusion to the way it exfoliates upon heating. Chemical variants were recognized by Pete J. Dunn, Roland C. Rouse, and Julie A. Norberg in 1978.
The name was revised from apophyllite-(KF) to fluorapophyllite-(K) (Hatert et al. 2013).