bog-iron ore

[bog-ahy-ern, bawg-]
|

noun Mineralogy.

a deposit of impure limonite formed in low, wet areas.

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. 2019

Examples from the Web for bog-iron ore

Historical Examples of bog-iron ore