
1) Palladium mineral 2) Telluride mineral 3) Trigonal mineral
Found on
https://www.crosswordclues.com/clue/merenskyite

Merenskyite is a rare telluride / bismuthinide mineral with formula: (Pd,Pt)(Te,Bi)2. It is an opaque white to light gray metallic mineral that occurs as inclusions within other minerals such as chalcopyrite. It crystallizes in the trigonal crystal system. It was first described in 1966 for an occurrence in the Merensky Reef of the Western Bushvel...
Found on
http://en.wikipedia.org/wiki/Merenskyite
No exact match found.