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Wheal Busy
Wheal Busy, sometimes called Great Wheal Busy and in its early years known as Chacewater Mine, was a metalliferous mine half way between Redruth and Truro in the Gwennap mining area of Cornwall, England. During the 18th century the mine produced enormous amounts of copper ore and was very wealthy, but from the later 19th century onwards was not profitable. Today the site of the mine is part of the Cornwall and West Devon Mining Landscape World Heritage Site.
==Geology==
The country rock at the mine was killas and the mine's main produce was copper, though arsenic and tin were also produced. There are several lodes at the mine, some of which were crossed by an elvan dyke, 15 to wide which in places was highly mineralized.〔Dines 1956, p.389〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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