Occurrence
Welsh gold forms in veins or lodes of ore that yield up to 30 troy ounces per long ton (920 g/Mg). In comparison, South African gold ore yields just a quarter of a troy ounce for every tonne mined (8 g/Mg). However the South African gold fields are vastly more extensive. Welsh gold, when extracted, often has a reddish tint due to admixture with copper. During refining, the gold is purified to the more common yellow color. Once Welsh gold is purified, it is indistinguishable from other gold by the normal physical and chemical tests.
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