1) Arsenic mineral
Found on
https://www.crosswordclues.com/clue/gersdorffite
Gersdorffite is a nickel arsenic sulfide mineral with formula NiAsS. It crystallizes in the isometric system showing diploidal symmetry. It occurs as euhedral to massive opaque, metallic grey-black to silver white forms. Gersdorffite belongs to a solid solution series with cobaltite, CoAsS. Antimony freely substitutes also leading to ullmannite, N...
Found on
http://en.wikipedia.org/wiki/Gersdorffite
No exact match found.
