PREHNITE ROSE CLUSTER
A great Aussie Prehnite Rose Cluster for your collection. Its color is a pleasant green and is at times quite unique to Prehnite. Typical formations are rather thick crusts with a rough or crystaline texture. This particular specimen has the wonderful sort after green colour and prominent rose formations. The colour of this specimen is slightly darker than the pics show.
Mullaly, NSW, Australia.
12.9cm x 9.3cm x 6.8cm, 803g.
Prehnite: 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.
Its colour is a pleasant green and is at times quite unique to Prehnite. Some Minerals that can be confused with Prehnite are Gyrolite, Smithsonite and Hemimorphite. Prehnite is harder than all of these and lacks Smithsonite’s unusual luster. Hemimorphite is usually blue and Gyrolite is not as glassy. Its color, luster, associations and crystal habits make it a joy to own.