Chalcedony on Smoky Quartz “casts” after Laumontite Urals The piece also shows a

The piece also shows a slightly different habit of twinning

"sword"-shaped crystals of Vivianite with white bladed Barite and minor metamorphosed Sandstone

A nice representative thumbnail specimen of Amazonite

Specimen # BOL711B238

Chalcedony on Smoky Quartz “casts” after Laumontite Urals The piece also shows aThis locality in the Cripple Creek District (purportedly in an old mine shaft) produced unique epimorphs or "casts" of Smoky Quartz and Chalcedony replacing Laumontite. The Smoky Quartz has a distinctive muted silvery grey color, with very little luster and a somewhat stalactite esque growth due to the way the Quartz overgrew the preexisting Laumontite. The lack of luster on the Quartz is most likely due to a micro coating of Chalcedony. The biggest