Prehnite “BOOT”-shaped cast after Anhydrite with Calcite monoclinic it makes the piece all

it makes the piece all the more desirable

The Chabazites are mostly white

translucent

One side features a group of stout and thick "Spinel"-twins which are characterized by their gorgeous smooth crystal faces and hollow negative faces all around

Prehnite “BOOT”-shaped cast after Anhydrite with Calcite monoclinic it makes the piece allA unique and eye catching large thumbnail sized display specimen. The piece has an uncanny resemblance to a BOOT (!) and certainly is unlike any other specimen in the lot. To top it off, the piece is accented with several off white color scalenohedra of Calcite. Good luster on the display side, and a slight coating of a secondary clay mineral on the back. The underside of the piece shows the square cross section of the once preexisting Anhydrite