Fluorite & Calcite: Cave in Rock, Illinois

Minerva #1 mine, Cave-in-Rock, 
Hardin County, Illinois, USA
 
85 x 64 x 48mm                  small cab.
ex. Colleen Thomson Collection
ex. Peter Seroka Collection
 
This is a really super fluorite example from this classic American locality. The fluorite crystals are a deep purple colour with rich  yellow undertones that are fabulous when backlit.
 
The scalenohedral calcite  crystals are a lovely adornment and accent the piece very well.
Lots of interesting growth patterns and plenty to keep you enthralled for hours.
 
I added this to my collection soon after Peter Seroka , who had a superb fluorite sub collection, dispersed it before he moved from Germany to the US.
There are breaks to the back and underside consistant with removal from host matrix.