Crowning a cluster of the classic "Blanchard Blue" fluorite crystals (to 1.3 cm) is a perfect cube of galena! (also 1.3 cm). Now, both galena crystals and fluorite are staples from this mine. But, I have simply never seen a galena cube growing right in the middle of, and in fact partly covered by, the fluorites, in isolation! The fluorites here have a touch of purple at the edges, which adds to their own beauty.