A metallic mineral found in nature and being relatively pure
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Category: <span>N</span>
The hard, smooth and iridescent inner layer of a mollusk shell, a source of calcium carbonate
A small loose alluvial mass of near pure gold or platinum metal
A compound, mineral or area that does not contain sufficient quantities of iron to be detected or targeted for iron
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