Zeolites

Zeolites are a group of minerals which readily exchange
ions in their crystal structure. Classic locations for zeolites
and associated minerals are the trap rock in New Jersey
and western India. I was fortunate to be in India and acquire
some specimens.

Heulandite with chalcedony In this specimen, the heulandite is coated with a darker, unknown mineral. It is usually white.	Stilbite and Apophyllite Stilbite is the salmon clusters, apophyllite is the tetragonal crystals.