bog-iron ore
Americannoun
Etymology
Origin of bog-iron ore
First recorded in 1780–90
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
These actions are of extreme importance in nature, as their continuation results in the enormous deposits of bog-iron ore, ochre, and—since Molisch has shown that the iron can be replaced by manganese in some bacteria—of manganese ores.
From Project Gutenberg
Bog-iron ore appears often to have originated in this way.
From Project Gutenberg
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 Project Gutenberg
A well-known substance, called bog-iron ore, often met with in peat-mosses, has often been shown by Ehrenberg to consist of innumerable articulated threads, of a yellow ochre colour, composed of silica, argillaceous matter, and peroxide of iron.
From Project Gutenberg
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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
