ores

You have in those northern streams waterpowers that can be used in due time to electrify the T. & N.O., and (when the electrical smelting of lowgrade ores is perfected) will be available for the treating of the enormous mineral resources of that north country.

The Northland of Canada 1923

Within twenty-five years instead of all our iron men using the rich Lake Superior ores from the south of the Lake they will begin to have to use other ores, and many of our ores, at present hardly of a quality to compete, are being looked to, and we find our American brethren are recognizing that.

The Mineral Resources of Ontario 1905

What breaks down the ores is a bacterium in the worm's stomach.

A Gift From Earth Niven, Larry 1968

What breaks down the ores is a bacterium in the worm's stomach.

A Gift From Earth Niven, Larry 1968

This involved an analysis of the geological conditions, to show that the ores are the result of normal weathering and concentration in place of the underlying rocks -- an origin common to many iron ore deposits, -- and that they do not have the characteristic origin of bog ores.

The Economic Aspect of Geology 1915

To judge by the tools that have been seen and which the said Ygolotes have, as above said, the most usual and only working that they give their ores is the above, and nothing further.

The Philippine Islands, 1493-1898 — Volume 20 of 55 1621-1624 Explorations by early navigators, descriptions of the islands and their peoples, their history and records of the catholic missions, as related in contemporaneous books and manuscripts, showing the political, economic, commercial and religious conditions of those islands from their earliest relations with European nations to the close of the nineteenth century. James Alexander Robertson 1906

The iron content in the ores, which is an important element in any plans for the steel industry, range between 25 per cent and 62 per cent, the local government said.

The Economic Times 2009

Rocks from which they can be separated are called ores

Recently Uploaded Slideshows 2009

Rocks from which minerals are mined for economic purposes are referred to as ores (the rocks and minerals that remain, after the desired mineral has been separated from the ore, are referred to as tailings).

Color + Design Blog by COLOURlovers / Feed 2008

Rocks from which minerals are mined for economic purposes are referred to as ores (the rocks and minerals that remain, after the desired mineral has been separated from the ore, are referred to as tailings).

Color + Design Blog by COLOURlovers / Feed 2008