Galena (skeletal)

Radvanice, Katerina Coal Mine
Czech Republic
Size: up to 1.0x0.6x0.1 cm

$75.00

These four unusual iridescent galena specimens are exhalative formations that come from a no longer operational coal mine with a burning mine dump. The galena crystals form at a temperature of more than 600°C, in the dump. They are slightly radioactive (not nearly enough to cause harm). The specimens come with a handwritten label from a dealer based in the Czech Republic.

Ref:
http://tw.strahlen.org/haldenbrand/burningdumps_radvanice.html
https://www.sciencedirect.com/science/article/pii/B9780444595096000053

All prices in Canadian dollars. For payment in US$, deduct 25% or multiply by 0.75.

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