A rare mineral composed of uranium and lead, known for its radioactive properties and dark coloration.
From German 'Feuerblende,' combining 'feuer' (fire) and 'blende' (sphalerite or blende, a mineral). Named for its association with radioactivity.
Fireblende is one of nature's warning labels—its dark color and radioactive nature made it valuable to scientists studying uranium, but miners had to be extremely careful because handling it without protection could cause serious harm.
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