noun
definition
Rock or other material that contains valuable or utilitarian materials; primarily a rock containing metals or gems for which it is typically mined and processed.
Examples of ore in a Sentence
The value of the ore reduced annually is about $10,000,000.
His people were starving as the planet died, and soon, the Council would realize the planet produced no ore without its rightful ruler.
The dust emitted from mining the ore was poisonous in its raw state.
In the last-named place the assays of ore yielded 22% of mercury.
Some samples of ore, coal and limestone, obtained in the Mittagong district, with pig-iron and castings manufactured therefrom, were exhibited at the Mining Exhibition in London and obtained a first award.
The principal mining product is mercury, extracted at Idria, while iron and copper ore, zinc and coal are also found.
Bollman in 1867 the ore may be extracted by carbon bisulphide.
Azurite occurs with malachite in the upper portions of deposits of copper ore, and owes its origin to the alteration of the sulphide or of native copper by water containing carbon dioxide and oxygen.
It was along the coast of North Carolina that Europeans in 1585 made the first discovery of iron ore within the present limits of the United States.
Niriz was formerly known for its manufacture of steel from iron ore brought from Parpa, 40 m.
This method has the advantage of permitting the ore to be sent to the surface as fast as it is mined instead of being left for some months in the stopes for the men to stand upon.
Rock-filling will be used whenever a large proportion of barren material must be mined with the ore.
In the neighbourhood of Millom there are blast furnaces and highly productive mines of red haematite ore.
Iron ore (haematite) is abundant.
The door pulled him in, and he sat in the doorway, coughing at the ore dust cloud and staring.
Cobalt occurs in New South Wales, Victoria and South Australia, and efforts have been made in the former state to treat the ore, the metal having a high commercial value; but the market is small, and no attempt has been made up to 1907 to produce it on any large scale.
It lies in the midst of the great red and brown hematite iron-ore deposits of the Mesabi Range - the richest in the Lake Superior district - and the mining and shipping of this ore are its principal industries.
The kiln consists of two (or more) connected cells which are both charged with the ore.
Lead ore was found and worked on Knaresborough Common in the 16th century.
It is an oxide of iron having the formula Fe 3 O 4, corresponding with 72.4% of metal, whence its great value as an ore.
An interesting deposit of oolitic magnetic ore occurs in the Dogger (Inferior Oolite) of Rosedale Abbey, in Yorkshire; and a somewhat similar pisolitic ore, of Jurassic age, is known on the continent as chamoisite, having been named from Chamoison (or Chamoson) in the Valais, Switzerland.
Most of these were simple records of patient and laborious analytical operations, and it is perhaps surprising that among all the substances he analysed he only detected two new elements - beryllium (1798) in beryl and chromium (1797) in a red lead ore from Siberia.
The export that comes next in value is silk, and after it may be named wheat, barley, manganese ore, maize, wool, oilcake, carpets, rye, oats, liquorice and timber.
In the township are several villages, including Salisbury, Lakeville, Lime Rock, Chapinville and Ore Hill.
The surrounding country abounds in coal, iron ore, oil, clay, stone and timber, for which the city is a distributing centre.
It may be obtained direct from pure and bright coloured portions of the native ore cinnabar, or, artificially, by subliming a mixture of mercury and sulphur.
But this company, after extracting some 150,000 tons of ore in 1888-1889, went into liquidation in the latter year.
The output of ore was insignificant until 1892, when it stood at 178,000 tons; but in 1902 it amounted to 1,074,000 tons.
Iron ore, lignite, copper, mercury, molybdenite, nickel, platinum and other minerals have been found, but the quantity of each is too small, or the quality too poor, for them to be of commercial value.
Originally it owed its whole importance to the copper mines of the Parys (probably, Parry's) mountain, as, before ore was discovered in March 1768, it was a small hamlet of fishermen.
The mineral wealth of the Cyclades has hitherto been much neglected; iron ore is exported from Seriphos, manganese and sulphur from Melos, and volcanic cement (pozzolana) from Santorin.
In the Tertiary region are found small quantities of iron ore and an indifferent brown coal.
In 1828-1840 about two million dollars' worth of ore was shipped yearly to the United States alone.
The campaigns described below are theref ore (a) The Austrian War of 1805 (Ulm and Austerlitz).
Cleveland is the largest ore market in the world, and its huge ore docks are among its most interesting features; the annual receipts and shipments of coal and iron ore are enormous.
The discovery of iron ore in the Lake Superior region made Cleveland the natural meeting-point of the iron ore and the coal from the Ohio, Pennsylvania and West Virginia mines; and it is from this that the city's great commercial importance dates.
They can impose fines for small offences not worth sending bef ore the inspector, and, in cases of high misdemeanour, have the power of inflicting corporal punishment.
What Cardiff lacks is a corresponding import trade, for its imports in 1906 amounted to only 2,108,133 tons, of which the chief items were iron ore (8 9 5,610 tons), pit-wood (303,407), grain and flour (298,197).
Minnesota ranked first among the states in 1902 in the production of iron ore.
Although the iron ranges in the north-east had been explored about 1860 and were known to contain a great wealth of ore, it was not until 1884 that mining was actually begun on the Vermilion Range.
The ore, which in many places is found in an almost pure state, is at or near the surface and the process of mining is one of great simplicity and ease.
The quality of ore in the two ranges differs somewhat, that mined from the Vermilion Range being a hard specular or red haematite, while that taken from the Mesabi Range, largely red haematite, is much softer and in many localities quite finely comminuted.
Galena (q.v.), the principal lead ore, has a world-wide distribution, and is always contaminated with silver sulphide, the proportion of noble metal varying from about o of or less to o 3%, and in rare cases coming up to 2 or i %.
The native carbonate or cerussite (q.v.) occasionally occurs in the pure form, but more frequently in a state of intimate intermixture with clay ("lead earth," Bleierde), limestone, iron oxides, &c. (as in the ores of Nevada and Colorado), and some times also with coal ("black lead ore").
This ore, metallurgically, was not reckoned of much value, until immense quantities of it were discovered in Nevada and in Colorado (U.S.).
The Nevada mines are mostly grouped around the city of Eureka, where the ore occurs in "pockets" disseminated at random through limestone.
The crude ore contains about 30% lead and 0.2 to 0.3% silver.
Stephens's discovery of the ore in 1877 was the making of the city of Leadville, which, in 1878, within a year of its foundation, had over io,000 inhabitants.
In Nevada and Colorado the ore is worked chiefly for the sake of the silver.
In Cumberland, Northumberland, Durham and latterly the United States, the reverberatory furnace is used only for roasting the ore, and the oxidized ore is then reduced by fusion in a low, square blastfurnace (a "Scottish hearth furnace") lined with cast iron, as is also the inclined sole-plate which is made to project beyond the furnace, the outside portion (the "work-stone") being provided with grooves guiding any molten metal that may be placed on the "stone" into a cast iron pot; the "tuyere" for the introduction of the wind was, in the earlier types, about half way down the furnace.