The water which has been used in washing the ore on the buddle, as well as that in the kieve, contains in addition to the debris of the gangue more or less of small pieces of the ore itself.
It was especially used in the case of the gangueminerals of a metalliferous vein.
The gangue is quartz, chlorite, tourmaline, and sometimes decomposed granite and fluor spar.
The gangue of these veins is generally quartz, either pure, or mixed with green particles analogous to chlorite.
It serves particularly to pulverize those ores whose gangue is too hard to yield readily to the rollers, and also those which being already pulverized to a certain degree, require to be ground still more finely.
These form a narrow pay streak from one to eighteen inches wide, and the remainder is filled with a gangue rock, generally of a trachytic formation.
He landed heavily in the pile of gangue at the base of the chute; then was scrambling and slipping down with an avalanche of the sharp edged stone.
He dived head foremost into a rectangular wooden trough that was used for the disposal of the gangue from a crushing mill above.
In this the gangue minerals are fluorite (f) and barite (b).
The gangue or vein-rock in which the metal is found may be calcite or calc spar, fluor spar, heavy spar or baryta, or quartz.
Where quartz veins are small and the rich pockets separated by wide intervals of poor gangue the gravel of the district will usually be similar in character.
Fluor spar is as favorable a gangue for lead as quartz is for gold.
In the western United States many metalliferous deposits carry large amounts of fluorite, which is treated as a gangue or waste mineral, but which could be profitably extracted if there were local markets.
In the latter locality arsenopyrite is found associated with pyrite in a gangue of quartz, forming a series of parallel stringers in gneiss close to a basic dike.
Because of their common gangue of quartz these are often called "dry" or "siliceous" ores.
Furthermore, the quartz gangue near the igneous rock is likely to contain minerals characteristic of hot solutions, while farther away such minerals as dolomite and calcite appear in the gangue, suggestive of cooler conditions.
The ore contains rich silver sulphide minerals and native gold, in a gangue composed almost entirely of quartz.
The gangue is mainly fine-grained quartz or jasperoid, and barite.
The weathering of the silicated limestone gangue results in great masses of clay which are characteristic features of the oxide zones of these deposits.
When the associated gangue and country rock are less soluble than the copper--as is common with quartz and igneous rocks--the oxide zone is likely to be depleted of values.
The ore is mainly gold telluride, in a gangue of quartz together with pyrite and a variety of minerals characteristic of hot-water solutions.
They are variously associated with a gangue of dolomite, calcite, quartz, iron pyrite, barite, and chert.
The oxide zone as a whole may be rich or lean in values, depending on the nature of the associated gangue material and country rock.
The Coeur d'Alene deposits are almost unique in that they contain galena as vein-fillings and replacements in quartzite, with a gangue of siderite (iron carbonate).
There is nothing, however, in his works that permits of any attempt to identify them, and his classification seems to rest ongangue colours.
Lewis rode over the mountains last fall, which horse was Seen yesterday with a gangue of Indian horses, and is Very wild-.
Canoes by 12 oClock to day, and I sent them to make Oars & get poles after which I sent Shields and Labeech to kill a fat Buffalow out of a gangue which has been in a fiew miles of us all day.
Shore would turn them back of this Gangue of Goats I counted 58 of which they had killed & on the Shore, one of our hunters out with Cap Lewis killed three Goats, we passed the Camp on the S.
Buffalow had to pass and the Chanel of the river on each Side nearly 1/4 of a mile in width, this gangue of Buffalow was entirely across and as thick as they could Swim.
Saw a Gangue of Buffalow bulls which we did not think worth while to kill- our hunters Killd.
Encamped on the Lard Side, saw a large Gangue of Elk at Sunset to the S W.
If the gangue of the ore is basic, carrying much oxide of iron or lime, silica is added, in quantity not exceeding 10 grams.
And that with ores almost free from gangue some quartz or glass should be added to protect the crucible.
This is because I have assumed in the calculations that the grains of copper pyrites, for example, were all copper pyrites and the particles of gangue were free from copper.
If, on the other hand, the gangue is mainly quartz, oxide of iron up to 7 grams must be added.
To work these examples by Poisson's formula let us assume the gangue to have a mean sp.
Few of the minerals which occur in the gangue of an ore are fusible; and still fewer are sufficiently fusible for the purposes of the assayer, consequently the subject is one of importance, and it ought to be treated on chemical principles.
The powder is separated from the lighter gangue by washing.
The more strictly chemical methods are rendered troublesome by the oxide being insoluble in acids, resembling in this respect the gangue with which it is associated.
If the ore to be operated on does not contain this quantity of metal, then the sample (if coarse) must be reduced to a fine state, the gangue being removed by vanning, and the ore saved for the fire assay.
Having crushed your gangue to a fine powder you proceed to pan it off in a similar manner to that of washing out alluvial earth, except that in prospecting quartz one has to be much more particular, as the gold is usually finer.
Careful dissolving of the pyrites and gangue so as to leave the gold intact failed to find it in any larger diameter.
Moreover, I find it possible to moderate the colour and to produce a specimen in which the gold shall be as ruddy yellow as in the ferro-oxide gangue of Mount Morgan, or to tone it to the pale primrose hue of the product of the Croydon mines.
For general purposes, where the gangue has not been crushed too fine, I think the Duncan pan will usually be found effective in saving the concentrates.
It will be found better where the gold is fine, or the gangue contains much base metal, to run the pulp from the lip of the battery into a “distributor.
The second includes the trituration of the gangue and the extraction of its gold or silver by means of mercury.
It will be found better where the gold is fine, or the gangue contains much base metal, to run the pulp from the lip of the battery into a "distributor.
The first point, then, is to crush the gangue effectively, the degree of fineness being regulated by the fineness of the gold itself.
Thanks to the kindness of Mr. Fayol, we have been enabled to make such researches upon numerous specimens that were still inclosed in their sandstone gangue and that had been collected in the coal strata of Commentry.
The surface of the isolated specimens is well defined, and their separation from the gangue (which has never been penetrated) is of the easiest character.
In short, its duty is to "flux" the gangueand ash, and wash out the sulphur.
Of these the silica and alumina are chiefly those which the gangue of the ore and the ash of the fuel introduce, whereas the lime is that added intentionally to form with these others a slag of the needed physical properties.
The non-magnetic gangue descends in a straight line to the other side of the partition.
The gangueof the Michigan mines is exceedingly hard, but the stamps are so powerful that one can crush five hundred tons in less than twenty-four hours.
This gangue is dug out and broken up as in mines of other metals.
The copper is much heavier than the rock, so it is easy to get rid of the worthlessgangue by means of a flow of water.
Some copper can be taken out of the mortars at once, but the rest of the broken gangue is fed to jigs, or screens, which are kept under jets of water.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "gangue" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: chimney; chute; deposit; dike; lode; matrix; shoot; stock; vein
