Bismuth Moon

Naturally occurring bismuth is found in small quantities throughout Earth's crust both as a pure metal and combined with other elements in various compounds. The largest source of bismuth is found in the mineral bismuthinite, or bismuth sulfide (Bi₂S₃), according to John Emsley in his book, "Nature’s Building Blocks: An A-Z Guide to the Elements" (Oxford University Press, 1999). Bismuth is typically obtained as a by-product in refining lead, copper, tin, silver, and gold ores found in Bolivia, Peru, Japan, Mexico, and Canada.

Details were found on: https://www.livescience.com/39451-bismuth.html