Bog ore

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Related to Bog ore: Bog iron, Bog iron ore
(Min.) An ore of iron found in boggy or swampy land; a variety of brown iron ore, or limonite.
Bog manganese, the hydrated peroxide of manganese.

See also: bog, bog

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.