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 (gŏs′ən, gŏz-)
An exposed, oxidized portion of a mineral vein, especially a rust-colored outcrop of iron ore.

[Cornish gossen, from gōs, blood, from Old Cornish guit.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Mining & Quarrying) an oxidized portion of a mineral vein in rock
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈgɒs ən, ˈgɒz-)

a rust-colored, oxidized deposit along an exposed iron-bearing vein.
[1770–80; orig. dial. (Cornwall) < Cornish, derivative of gōs blood; akin to Welsh gwaed]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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References in periodicals archive ?
The primary objective of the drilling was to confirm the copper and zinc mineralisation reported in the early 1970s at the Schwabe prospect, which contains a copper gossan extending over 140m at surface.
Rumble is drill testing two compelling side by side conductors that are located below a large exposed mineralised gossan, targeting massive Ni-Cu-Co-PGE-Au Deposits.
James Blackburn, (1) Dinesh Giri, (1) Barbara Ciolka, (2) Nicole Gossan, (3) Mohammad Didi, (1) George Kokai, (2) Alison Waghorn, (4) Matthew Jones, (5) and Senthil Senniappan (1,6)
Maprani et al., "Effects of acid-sulfate weathering and cyanide-containing gold tailings on the transport and fate of mercury and other metals in Gossan Creek: Murray Brook mine, New Brunswick, Canada," Applied Geochemistry, vol.
The company has combined the Gossan and Char Crete leases into a single 2.5-sq.-mi project on the east shore of Lake Winnipeg, northeast of Winnipeg, Manitoba.
Of particular note is the Mars prospect, which is hosted in altered diorite intruding volcanic rocks with extensive gossan exposures that locally contain copper mineralization.
Thirty-eight workers had been undergoing safety training inside the Big Gossan facility in the province of Papua when the roof collapsed May 14.
President Director of PT Freeport Indonesia Rozik B Soetjipto told media that an investigation over the collapse of the Big Gossan tunnel on May 14 would be carried out.
The Big Gossan underground training facility at the PT Freeport Indonesia mine collapsed last Tuesday when 38 workers were undergoing safety training.