bog-iron ore

American  

[bog-ahy-ern, bawg-] / ˈbɒgˌaɪ ərn, ˈbɔg- /

noun

Mineralogy.

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

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Etymology

Origin of bog-iron ore

First recorded in 1780–90

Example Sentences

They dye black, with an ink made of elder bark and a little bog-iron ore dried and powdered, and they have various modes of producing yellow.

From The Commercial Products of the Vegetable Kingdom Considered in Their Various Uses to Man and in Their Relation to the Arts and Manufactures; Forming a Practical Treatise & Handbook of Reference for the Colonist, Manufacturer, Merchant, and Consumer, on the Cultivation, Preparation for Shipment, and Commercial Value, &c. of the Various Substances Obtained From Trees and Plants, Entering into the Husbandry of Tropical and Sub-tropical Regions, &c. by Simmonds, P. L.