gossan
gossan definition
gos·san (gäs′ən, gäz′-)
noun
Mining rusty iron deposits often occurring where the upper part of a vein has been weathered and oxidized
Etymology: Cornish gossen < gos, blood < Old Cornish guit
Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.
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