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 on the fluorite with baryte blade impressions and plenty of yummy colourful zoning 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.