AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Illinois > Fluorite with Hydrocarbon coating

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Fluorite with Hydrocarbon coating from Cave-in-Rock District, Hardin County, Illinois

 
Fluorite with Hydrocarbon coating from Cave-in-Rock District, Hardin County, Illinois

Fluorite with Hydrocarbon coating from Cave-in-Rock District, Hardin County, Illinois

DESCRIPTION:No. 25099
Mineral:Fluorite with Hydrocarbon coating
Locality:Cave-in-Rock District, Hardin County, Illinois
Description:Cluster of cubic fluorite crystals with a black coating of hydrocarbon (natural petroleum) with glassy crystal surfaces. One corner has cleaved to reveal the yellow fluorite beneath. The hydrocarbon could be removed. Glassy crystal surfaces
Overall Size:10x6x5 cm
Crystals:5-30 mm
Archived: For reference only

 

 

 

 

 

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