A metallic mineral found in nature and being relatively pure
A metallic mineral found in nature and being relatively pure
The hard, smooth and iridescent inner layer of a mollusk shell, a source of calcium carbonate
Small, round discrete masses of a mineral type, usually found within or displaced from another mineral
A group of metals with high resistance to oxidation and chemical dissolution, including mercury, gold, rhenium and platinum group elements
A group of inert gases which includes neon, helium, argon, krypton, xenon, and radon
A soft, white and ductile metallic. Symbol, Nb
An isometric base metal. Symbol, Ni
An electrically neutral elementary particle, nearly equal in mass to a proton
A royalty paid to the royalty holder, usually contingent on the actual production from a mine, and not subject to the cost of extracting the minerals
Term used to describe a large shallow water body, usually in fossil deposits where mollusk shells are found in some concentration