STILBITE PREHNITE QUARTZ
A quality specimen of Stilbite Prehnite Quartz crystals on matrix. Great collection specimen featuring good crystal formation. Interesting and a good representation of Indian minerals. Large enough to be a feature piece.
Deccan Plateau, Bidikin, India.
11.9cm x 9cm x 5.2cm, 497g.
Ca2 Al2 Si3 O10(OH)2
Calcium Aluminum Silicate Hydroxide.
Prehnite is a member the Phyllosilicates Subclass. Like zeolites, Prehnite can give off water when heated, but can not gain the water back like they can.
A natural form of silicon dioxide is found in a large range of varieties and colours. Today it leads technology being the main component of transistors which make our computers work and solar panels.