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For a number of years, these ores from the Sudbury area had a value of $2 billion each year. The Sudbury formation has provided us with ores of zinc, copper, gold, and lead. [25] [31] Strong evidence for hydrothermalism was reported by a team of researchers studying Auki Crater. This crater contains ridges that may have been produced after ...
Uranium ore deposits are economically recoverable concentrations of uranium within Earth's crust. Uranium is one of the most common elements in Earth's crust, being 40 times more common than silver and 500 times more common than gold . [ 1 ]
Reddish-brown bauxite Bauxite with US penny for comparison QEMSCAN mineral maps of bauxite ore-forming pisoliths. Bauxite (/ ˈ b ɔː k s aɪ t /) is a sedimentary rock with a relatively high aluminium content. It is the world's main source of aluminium and gallium.