1) Nickel mineral 2) Trigonal mineral
Found on
https://www.crosswordclues.com/clue/aerugite
Aerugite is a rare complex nickel arsenate mineral with a variably reported formula: Ni9(AsO4)2AsO6. It forms green to deep blue-green trigonal crystals. It has a Mohs hardness of 4 and a specific gravity of 5.85 to 5.95. It was first described in 1858 in either the South Terres mine of Cornwall, England or in Erzgebirge, Saxony, Germany. The orig...
Found on
http://en.wikipedia.org/wiki/Aerugite
No exact match found.
