Definition of gossan in English:

gossan

Line breaks: gos¦san
Pronunciation: /ˈgɒz(ə)n
 
/

noun

[mass 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.
    More 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.

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elaborate ornamentation of a vocal melody