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Galena

Radvanice
Katerina Coal Mine
Other
Czech Republic
Size: 0.5x0.5x0.2 cm
Largest crystal size: each as above mm

$90.00

These unusual iridescent galena specimens are exhalative formations that come from a, no longer operational, coal mine with a burning waste dump. The galena crystals form at a temperature of more than 600°C. 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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