Definition of bog iron in English:

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bog iron

(also bog iron ore)

noun

[mass noun]
An impure porous form of limonite deposited in bogs.
Example sentences
  • Also needed were iron ore or bog iron, limestone to be used as the purifying flux, and a water power source to run the bellows to deliver huge amounts of air into the blast for twenty-four-hour-a-day operations.
  • Several large pieces of iron slag suggest the village was self-sufficient for iron tools, perhaps using ‘bog iron’ as raw material.
  • The very earliest tools were probably made of local bog iron.

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Line breaks: bog iron

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