SOLD !
In the BBU (Bleiberger Bergwerks Union) in Arnoldstein, approx. 5 tons of GERMANIUM were extracted per year from ZINKBLENDE from the various tunnels in BLEIBERG over the last 10 years until its closure in 1993.
This piece (the ONLY one we have) is such a SPHALERITE with GERMANIUM.
Weight: 172 g Dimensions: 6 x 4 x 4 cm
