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iron hat

noun, Geology
1.

gossan

[gos-uh n, goz-] /ˈgɒs ən, ˈgɒz-/
noun
1.
a rust-colored deposit of mineral matter at the outcrop of a vein or orebody containing iron-bearing materials.
Also called iron hat.
Origin of gossan
1770-1780
1770-80; orig. dial. (Cornwall) < Cornish, derivative of gōs blood; akin to Welsh gwaed
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for iron hat
Historical Examples
  • Ordinary vair in German heraldry is known as Eisenht-feh, or iron hat vair.

    A Complete Guide to Heraldry Arthur Charles Fox-Davies
  • Their history began away back in the days when military costume consisted of an iron hat and a steel vest.

  • The man immediately behind him wears an iron hat, with a wide rim and a raised crest, which is not at all unusual at this period.

  • Remember the pregnant Cornish saying with regard to mining and the current aphorism, "The iron hat covers the golden head."

    Getting Gold J. C. F. Johnson
  • These iron-stained rocks are variously called the "gossan," the "iron capping," the "colorado," or the "eiserner Hut" (iron hat).

  • Remember the pregnant Cornish saying with regard to mining and the current aphorism, “The iron hat covers the golden head.”

    Getting Gold J. C. F. Johnson

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4
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