cupriferous
Example Sentences
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By Pot Assay.—Roasted cupriferous pyrites containing small quantities of gold and silver comes under this heading.
From A Text-book of Assaying: For the Use of Those Connected with Mines. by Cornelius Beringer
This is black, bituminous, and cupriferous, and when first extracted from the mine it is thrown out into an open space and heaped up in a mound.
From De Re Metallica, Translated from the First Latin Edition of 1556 by Georgius Agricola
The Rossland, the Boundary and the Kootenay districts are the chief centres of vein-mining, yielding auriferous and cupriferous sulphide ores, as well as large quantities of silver-bearing lead ores.
From Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" by Various
In this manner the lead absorbs the gold, whether pure or argentiferous or cupriferous, and the alloy is taken to the cupellation furnace.
From De Re Metallica, Translated from the First Latin Edition of 1556 by Georgius Agricola
According to Egleston the loss may be from 40 to 90% of the total gold present in cupriferous ores according to the temperature and duration of calcination.
From Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 2 "Gloss" to "Gordon, Charles George" by Various
