1) Copper mineral 2) Sulfide mineral
Found on
https://www.crosswordclues.com/clue/mooihoekite
Mooihoekite is a copper iron sulfide mineral with chemical formula of Cu9Fe9S16. The mineral was discovered in 1972 and received its name from its discovery area, the Mooihoek mine in Transvaal, South Africa. ==Crystal structure and optical properties== Mooihoekite crystallizes in the tetragonal crystal system. It has a short optical c-axis that i...
Found on
http://en.wikipedia.org/wiki/Mooihoekite
No exact match found.
