Bismutite
Wheal Owles, Botallack, St Just, Cornwall, England, UK
A heavy piece of massive bismuthite. The piece is slightly radioactive due to small black specks of pitchblende.
Ex B. D. Gamble, Peter Golley, Nick Carruth and Derek Solt specimen.
Collection and photo, Paul De Bondt.
© Collection and photo © 2017, Paul De Bondt