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Galena

Radvanice
Katerina Coal Mine
Other
Czech Republic
Size: up to 0.6x0.6x0.1
Largest crystal size: as above

$100.00

These 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 mine dump. They are slightly radioactive (not nearly enough to cause harm). This specimen comes with a copy of the original 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 22% or multiply by 0.78.

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