Elements of Mineralogy, Crystallography and Blowpipe Analysis: From a Practical Standpoint, Including a Description of All Common Or Useful Minerals, the Tests Necessary for Their Identification, the Recognition and Measurement of Their Crystals, and a Concise Statement of Their Uses in the Arts |
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antimony arsenic arsenopyrite axes axial axis basal bead bisectrix bismuth BLOWPIPE blue borax brachy brittle brown calcite carbonates cent chloride cleavage closed tube coat cobalt cold colorless colors the flame COMPOSITION compounds copper crystalline crystals cube deposits DESCRIPTION.-A dissolved ETC.-On charcoal faces fluorite forms frequently fumes fuses fusion glass granular gray green H₂O heat hematite Hexagonal hydrochloric acid iron Isometric isomorphous light limonite LUSTRE magnetic magnetite masses metallic mica minerals Monoclinic nearly nickel nicol nitric acid obtained occurs odor opaque Optically Orthorhombic oxide parallel Physical Characters pinacoid plane plates platinum powder precipitate prism pyramid pyrite pyroxene pyrrhotite quartz rays refraction residue rhombohedron rocks salt siderite silicates silver soda sodium Soluble solution sometimes STREAK sublimate substance sulphate sulphides sulphur Supplement angles symmetry TENACITY Tetragonal translucent transparent triclinic twin unit prism usually vertical vibration violet vitreous volatile yellow yields zinc
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Page 427 - Antimony -Sb Argon A Arsenic As Barium Ba Bismuth Bi Boron B Bromine Br Cadmium Cd Caesium Cs Calcium Ca Carbon C Cerium Ce Chlorine Cl Chromium Cr Cobalt Co Columbium Cb Copper Cu...
Page 121 - Co obscures the tests, dissolve the substance in borax on charcoal to saturation, and treat for five minutes in hot RF If a visible button results, separate it from the borax, and treat with S. Ph. in the OF, replacing the S. Ph. when a color is obtained. If no visible button results, add either a small gold button or a few grains of test lead.
Page 111 - In Closed Tube with Dry Soda and Magnesium. — The soda and substance are mixed in equal parts and dried, and made to cover the magnesium. Upon strongly heating there will be a vivid incandescence, and the resulting mass, crushed and moistened, will yield the odor of phosphuretted hydrogen. Potassium, K. Flame. — Violet, except borates and phosphates. INTERFERING ELEMENTS. Sodium. — (a) The flame, through blue glass, will be violet or blue.
Page 107 - The residual button will be bluish-green when melted, will dissolve in the slag and color it red upon application of the OF, or may be removed from the slag and be submitted to either the S. Ph. or the flame test. FLUORINE, F. Etching Test. — If fluorine is released it will corrode glass in cloudy patches, and in presence of silica there will be a deposit on the glass. According to the refractoriness of the compound the fluorine may be released : (a) In closed tube by heat.
Page 112 - SELENIUM, Se. On Coal, RF — Disagreeable horse-radish odor, brown fumes, and a volatile steel-gray coat with a red border. In Open Tube. — Steel-gray sublimate, with red border, sometimes white crystals. In Closed Tube.
Page 110 - HCl Solutions. — If insoluble the substance may first be fused with S. Ph. in OF If then dissolved in the acid and heated with metallic tin, zinc, or copper, the solutions will be successively blue, green, and brown. If the S. Ph. bead has been treated in RF, the solution will become brown.
Page 114 - RF yellow hot, violet cold. HCl Solutions. — If insoluble, the substance may first be fused with S. Ph. or with soda, and reduced. If then dissolved in dilute acid and heated with metallic tin, the solution will become violet after standing. Usually there will also be a turbid violet precipitate, which becomes white. Interfering Elements. Iron. — The S. Ph. bead in RF is yellow hot, brownish red cold. Tungsten, W. With Borax. — OF Flame colorless to yellow hot, colorless cold ; can be flamed...
Page 108 - Violet, choking vapor and brown sublimate. In Open Tube, with equal parts Bismuth Oxide, Sulphur, and Soda. — A brick-red sublimate. With Starch Paper. — The vapor turns the paper dark purple Interfering Elements. Silver. — The iodide melts in KHSO4 to a dark-red globule, yellow on cooling, and unchanged by sunlight.
Page 102 - NH.. In Closed Tube. — Evolution of gas with the characteristic odor. Soda or lime assists the 'reaction. The gas turns red litmus paper blue and forms white clouds with HC1 vapor. ANTIMONY, Sb. On Coal, RF\ — Volatile white coat, bluish in thin layers, continues to form after cessation of blast and appears to come directly off the mass.