AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Illinois > Fluorite with hydrocarbon inclusions (cleavage)

Fluorite with hydrocarbon inclusions (cleavage) from Cave-in-Rock District, Hardin County, Illinois

Photo below under shortwave ultraviolet illumination:

Photo below under longwave ultraviolet illumination:

DESCRIPTION:	No. 79426
Mineral:	Fluorite with hydrocarbon inclusions (cleavage)
Locality:	Cave-in-Rock District, Hardin County, Illinois
Description:	Bi-colored transparent octahedral cleavage of blue-purple fluorite with microscopic inclusions of hydrocarbons (petroleum) that fluoresce in zones under ultraviolet illumination. Ex. D. Swenson collection
Overall Size:	35x28x28 mm
Crystals:
Archived:	For reference only

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