
1) Nickel mineral 2) Orthorhombic mineral
Found on
https://www.crosswordclues.com/clue/rammelsbergite

Rammelsbergite is a nickel arsenide mineral with formula NiAs2. It forms metallic silvery to tin white to reddish orthorhombic prismatic crystals, and is usually massive in form. It has a Mohs hardness of 5.5 and a specific gravity of 7.1. It was first described in 1854 from its type locality in the Schneeberg District in Saxony, Germany. It was n...
Found on
http://en.wikipedia.org/wiki/Rammelsbergite
No exact match found.