Richly zoned amber/yellow and blue fluorite with chalcopyrite inclusions from advance mining circa early 1960s. In excellent condition and an exceedingly rare specimen accurately documented from this important and major mine. Provenance: collected underground by miner Leonard Humm; sold to Lawrence Nuelle in 2016; sold to Ross Lillie in 2017.  Entered into Ross C. Lillie database as RCL 2711.