iron pyrites
Americannoun
Etymology
Origin of iron pyrites
First recorded in 1795–1805
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.
Prominent among these are galena and iron pyrites, the former being almost invariably gold-bearing.
From Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 2 "Gloss" to "Gordon, Charles George" by Various
They were inexperienced when they first came out here, and there was nobody to tell them whether they had iron pyrites or gold.
From The Haunted Mine by Castlemon, Harry
That is gold," said he; "there is no iron pyrites about that.
From The Haunted Mine by Castlemon, Harry
That is just what I was afraid of," said Julian; "but I reckon iron pyrites comes in lumps, don't it?
From The Haunted Mine by Castlemon, Harry
"Well, they brought a bag out for us to examine, and they thought it was nothing but iron pyrites," said Banta; and then he went on smoking his pipe.
From The Haunted Mine by Castlemon, Harry
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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.