Zinc ores, in the several varieties of carbonates, silicates, oxide, sulphide and sulphate of zinc, have been found in several of the Australian states, but have attracted little attention except in New South Wales, where special efforts are being made successfully to produce a high-grade zinc concentrate from the sulphide ores. [Please select]
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Should borates or silicates be present it is possible to express in terms of these. [Please select]
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All the carbonates examined (fourteen in number) dissolved with effervescence, sulphides were decomposed with evolution of sulphuretted hydrogen, and silicates with formation of gelatinous silica. [Please select]
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Soap, to be suitable for the purpose, must be free from uncombined caustic alkali, unsaponified fat, silicates, and rosin. [Please select]
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Soaps containing silicates may have a deleterious action upon the fibres, causing them to become damaged and broken. [Please select]
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, the solution being reserved for the subsequent determination of salt, silicates, and sulphates, as detailed below. [Please select]
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The solution of the question will depend rather upon the properties of the silicates of lime and magnesia at high temperatures, than upon the action of these silicates upon iron. [Please select]
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It should have very little tendency to dissolve in water, and hence is used when traces of alkali or silicates would prove injurious in the solutions for which the glass vessels are to be used. [Please select]
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