The fused or partially fused concentrate of byproducts leftover from the smelting of metal
The fused or partially fused concentrate of byproducts leftover from the smelting of metal
A metamorphic rock mass formed at the intersection of two large igneous masses
A white precious metal Symbol, Ag.
A period within the Paleozoic era, 440 to 400 million years ago
Settled concentrations of sediment usually under an aqueous body
An orthorhombic, trimorphous mineral, Al2SiO5
A mass of igneous rock intruding between older rock strata
A chemical agent used to liquefy gold and silver for the purpose of refinement or possible transportation
A mass of igneous rock intruding between older rock strata
A soft, light alkaline element. Symbol, Na