A Manual of Blow-pipe Analysis: And Determinative Mineralogy |
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Page ix
... sublimate is obtained , becoming reddish - brown when cold . In reading over the list in § 10 , we find this character belonging to sulphide of antimony . Examination in an open glass tube : gives sulphurous acid detected by the odor ...
... sublimate is obtained , becoming reddish - brown when cold . In reading over the list in § 10 , we find this character belonging to sulphide of antimony . Examination in an open glass tube : gives sulphurous acid detected by the odor ...
Page xi
... sublimate , consist- ing of octahedral crystals , pointing to the presence of arsenic ( § 11 ) . Examination in a glass tube open at both ends : gives a co- pious crystalline sublimate of arsenous acid , and a faint odor of sulphurous ...
... sublimate , consist- ing of octahedral crystals , pointing to the presence of arsenic ( § 11 ) . Examination in a glass tube open at both ends : gives a co- pious crystalline sublimate of arsenous acid , and a faint odor of sulphurous ...
Page xiii
... sublimates , & c . , and also to perform the principal tests by which substances are discovered when in combination with others , which are at length exposed in the third chapter . In order to obtain characteristic reac- tions , it is ...
... sublimates , & c . , and also to perform the principal tests by which substances are discovered when in combination with others , which are at length exposed in the third chapter . In order to obtain characteristic reac- tions , it is ...
Page 27
... sublimate . The sublimate is either white or possessed of a peculiar color . White sublimates are formed by a . Many salts of ammonia ; on removing the sublimate from the tube , placing it on a watch - crystal , adding a drop of hydrate ...
... sublimate . The sublimate is either white or possessed of a peculiar color . White sublimates are formed by a . Many salts of ammonia ; on removing the sublimate from the tube , placing it on a watch - crystal , adding a drop of hydrate ...
Page 28
... sublimate is dark brownish - red while hot , but from reddish - yellow to red when cold [ No. 80 ] . d . Cinnabar ; the sublimate is black , without lustre , and yields a red powder on being scratched with a knife [ No. 81 ] . e ...
... sublimate is dark brownish - red while hot , but from reddish - yellow to red when cold [ No. 80 ] . d . Cinnabar ; the sublimate is black , without lustre , and yields a red powder on being scratched with a knife [ No. 81 ] . e ...
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Common terms and phrases
alloy ammonia antimonious acid antimony aqua regia arsenous acid assay assay-piece assumes bead bismuth bisulphate of potassa blow-pipe boracic acid borax button Cadmium carbonate of soda caustic potassa charcoal chloride cobalt cold colorless colors the flame colors the outer compounds containing cooling crystals Ct of oxide cupel deposited detected dissolves Division effervescence fluxes fuses readily fusible gelatinizing gives the reactions glass becomes globule of metallic gray green color heated on Ch highly saturated hydrochloric acid impart infusible intumescence limpid glass magnetic manganese mass matrass mercury metallic globule metallic lustre nickel nitric acid Occurs usually odor opaque open glass tube outer flame oxide oxide of copper oxide of lead oxide of zinc platinum wire powder precipitate presence Sd on Ch Sesquioxide silica silver SiOł Soluble in nitric sublimate substance sulphide sulphurous acid tellurium tellurous acid Titanic Acid treated vapors volatile yellowish yellowish-green
Popular passages
Page iv - ENTERED, according to Act of Congress, in the year 1842, BY D. APPLETON & COMPANY, in the Clerk's Office of the District Conrt of the United States, for the Southern District of New York.
Page 35 - Fl., becomes opaque when the flame strikes it in an unequal or intermittent manner. This operation has received the name of "flaming," and any substance thus acted upon is said to become "opaque by flaming." The third and fourth columns of Tables I. and II. exhibit the behavior of the most important oxides to borax and salt of phosphorus. In Table III. the oxides are arranged with reference to the color which they impart to the beads in O. Fl. and R. Fl.
Page 55 - The iron is oxidized at the expense of the phosphoric acid, causing the formation of a borate of the oxide of iron, which fuses at a sufficiently high temperature. The bead is then taken from the...
Page 42 - ... open glass tube, evolve sulphurous acid and yield a sublimate of arsenous oxide. To show in a very decisive manner the presence of arsenic in any of its combinations with sulphur, the powdered assay [No. 80] is mixed with four volumes of neutral oxalate of potassa and a little charcoal powder, or with six parts of a mixture of equal parts of cyanide of potassium and carbonate of soda, the mass introduced into a tube sealed at one end, and heat applied, at first very gently but gradually raised...
Page 61 - Breithaupt, is as follows: 1. Talc; common laminated light-green variety. 2. Gypsum ; crystalline variety. 3. Calcite; transparent variety. 4. Fluorite; crystalline variety. 5. Apatite; transparent variety. 6. Orthoclase; white cleavable variety. 7. Quartz; transparent. 8. Topaz; transparent. 9. Corundum; cleavable varieties. 10. Diamond.
Page 60 - Scratches a copper coin, but is also scratched by it, being aboiit the same hardness. 4. Not scratched by a copper coin. Does not scratch glass. 5. Scratches glass with difficulty, leaving its powder on it, Yields readily to the knife. 6. Scratches glass easily. Yields with great difficulty to the knife. 7. Does not yield to the knife, while the latter leaves a steel streak on the mineral.
Page 61 - Talc ; common laminated light-green variety. 2. Gypsum ; crystalline variety. 3. Calcite ; transparent variety. 4. Fluorite ; crystalline variety. 5. Apatite; transparent variety. 6. Orthoclase; white cleavable variety. 7. Quartz; transparent. 8. Topaz; transparent. 9. Corundum ; cleavable varieties. 10. Diamond. To test the hardness of a mineral we may proceed in two different manners : firstly, by attempting to scratch it with the minerals enumerated in the scale, successively ; or, secondly, by...
Page 60 - Yields with difficulty to the nail, or merely receives an impression from it. Does not scratch a copper coin. 3. Scratches a copper coin ; but is also scratched by it, being of about the same degree of hardness. 4. Not scratched by a copper coin ; does not scratch glass. 5. Scratches glass, though with difficulty, leaving its powder upon it.
Page 162 - Oxide of Nickel; on cooling, reddish-brown to brown. Sesquioxide of Manganese ; on cooling, violet-red. Oxide of Nickel, containing Cobalt ; on cooling, brownish.
Page 145 - Sx on Platinum Wire. With SPh on Platinum Wire. The Carbonate dissolves with effervescence to a limpid glass which, when in a certain state of saturation, may be made opaque by flaming; when still more saturated, it becomes opaque on cooling, even without flaming. As with Borax. Presents the same phenomena as Baryta. Presents the same phenomena Baryta. Readily dissolved to a limpid glass, which becomes opaque by flaming. The Carbonate dissolves with effervescence. On a large addition of Lime the...