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bog-iron ore

[bog-ahy-ern, bawg-]
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noun Mineralogy.
  1. a deposit of impure limonite formed in low, wet areas.
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Origin of bog-iron ore

First recorded in 1780–90
Also called bog ore.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for bog-iron ore

Historical Examples

  • The bog-iron-ore, and swamp iron ore belong to this species.

    A Dictionary of Arts, Manufactures and Mines

    Andrew Ure