Definition of gossan in English:

Share this entry

gossan

Pronunciation: /ˈɡäsən/

noun

Geology & Mining
An iron-containing secondary deposit, largely consisting of oxides and typically yellowish or reddish, occurring above a deposit of a metallic ore.
Example sentences
  • In deposits that have been uplifted and exposed on land, the upper sulphides and oxides are invariably oxidized and weathered to a variety of secondary minerals (‘gossan’) by circulating meteoric water.
  • Here unusually lustrous crystals to 2.5 cm across occurred in limonite-malachite gossan.
  • It was found in gossan from a dump of one of the small mines on the southeastern side of the mountain on the World's Fair claim group.

Origin

Late 18th century: of unknown origin.

For editors and proofreaders

Syllabification: gos·san

Share this entry
 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.