Gmelinite/Chabazite Intergrowth...

crocoite · Post by **crocoite** » Mon Jan 29, 2007 5:29 am

This is a crystal of intergrown gmelinite and chabazite, two closely-related zeolite minerals. It occurs in cavities in basalt rocks at Flinders, Victoria. Crystal is about 3mm across.

beetleman · Post by **beetleman** » Mon Jan 29, 2007 4:46 pm

How can you tell that it is two minerals Steve.....Color or shape? Very nice crystal shape

crocoite · Post by **crocoite** » Tue Jan 30, 2007 1:50 am

Hi Doug. Its partly through the shape (or "habit") but also something that can often only be identified through scientific analysis.