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Calcite on Fluorite from Cave-in-Rock District, Hardin County, Illinois

 
Calcite on Fluorite from Cave-in-Rock District, Hardin County, Illinois

Calcite on Fluorite from Cave-in-Rock District, Hardin County, Illinois

Photo below under shortwave ultraviolet illumination:
Calcite on Fluorite from Cave-in-Rock District, Hardin County, Illinois

DESCRIPTION:No. 30154
Mineral:Calcite on Fluorite
Locality:Cave-in-Rock District, Hardin County, Illinois
Description:Parallel groups of colorless calcite crystals up to 20 mm long overgrown on dark purple fluorite crystals up to 20 mm. The calcite crystals are elongated scalenohedral form (some tips are incomplete) and most have a bitumen coating near the base.
Overall Size:15x13x5 cm
Crystals:1-20 mm
Status: Sold - Posted here for reference only
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