Introduction to the Study of Minerals: A Combined Textbook and Pocket ManualMcGraw-Hill, 1912 - 522 strani |
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Druge izdaje - Prikaži vse
Pogosti izrazi in povedi
actinolite aluminum apatite aragonite augite axes axis barite bead bipyramidal Blowpipe Blowpipe Tests blue borax c-axis calcite calcium carbonate cent cerussite charcoal Chemical Composition Cleavage closed tube gives cobalt colorless compounds copper corundum crossed nicols crystalline crystals dark diopside direction double refraction Easily fusible faces fibrous flame fluorite Fragments are irregular Fragments are prismatic Fuses garnet Glaucophane green gypsum H₂O H₂SO habit heated hematite hexagonal hornblende Hydrous igneous rocks index of refraction Interfacial angles interference figure iron isometric isomorphous light limestones Luster magnetite masses metallic metasilicate monoclinic NaPO occurs Optical Properties order interference colors orthoclase orthorhombic oxids parallel extinction Pinacoid plane prism pyramidal pyrite quartz represents rhombic rhombohedron salts secondary mineral silicates silver soda sodium Soluble in HCl solution sphalerite substance sulfate sulfids sulfur symmetry Tetragonal tourmaline TREMOLITE triclinic Trigonal twin twin-plane variety vein mineral yellow
Priljubljeni odlomki
Stran 95 - A superscript epsilon (e) indicates an editorial change since the last revision or reapproval. INTRODUCTION The specific gravity is the weight of any given volume of a substance divided by the weight of an equal volume of water. As both the weight and volume of wood vary with the amount of moisture contained in the wood, specific gravity as applied to wood is an indefinite quantity unless the conditions under which it is determined are clearly specified. The specific gravity of wood is generally...
Stran 151 - Scandium Sc Selenium Se Silicon Si Silver Ag Sodium Na Strontium Sr Sulphur S Tantalum Ta Tellurium Te Terbium Tb...
Stran 93 - SCALE OF HARDNESS 1. Talc 6. Feldspar 2. Gypsum 7. Quartz 3. Calcite 8. Topaz 4. Fluorite 9. Corundum 5. Apatite 10. Diamond...
Stran 150 - Aluminum Al Antimony Sb Argon A Arsenic As Barium Ba Beryllium Be Bismuth Bi Boron B Bromine Br Cadmium Cd Calcium Ca Carbon C Cerium Ce Cesium Cs Chlorine Cl Chromium Cr Cobalt..
Stran 150 - F Gadolinium Gd Gallium Ga Germanium Ge Gold Au Helium. . . He Hydrogen H Indium In Iodine I Iridium Ir Iron Fe Krypton Kr Lanthanum La Lead Pb Lithium Li Magnesium Mg Manganese Mn Mercury Hg Molybdenum.
Stran 186 - On charcoal reducing flame, especially with soda, iron minerals become magnetic. (Also cobalt and nickel). 2. In oxidizing flame the borax bead is amber colored; in reducing flame, bottle green. 3. Ammonia precipitates brownish-red iron hydroxide. A few drops of nitric acid should always be added to the solution to insure oxidation of the iron. 4. To detect state of iron, a borax bead made blue with malachite is changed to opaque red by a ferrous compound, and to green by a ferric compound. (Use...
Stran 3 - If we prove that a2 = ft2 + c* — 2bc cos A , then, however A may change, the law itself will never vary. In it the pupil comes into touch with the unchangeable, with the absolute. It is the same with all other laws of geometry. In any convex polyhedron, whatever its shape, the law remains that the number of faces plus the number of vertices is equal to the number of edges increased by two. "Change and decay in all around I see...
Stran 9 - Hence the law of constancy of interfacial angles, "in all crystals of the same substance, the angles between corresponding faces are...
Stran 474 - He sought to explain all intermediate rocks by the intermingling of these two. Although apparently applicable at times and serviceable in their day, the conceptions have long since exploded. (Kemp) Normal salt. A salt in which all the hydrogen of the acid has been replaced by metals. (AF Rogers) Normal shift. The horizontal component of the shift at right angles to the fault strike.
Stran 154 - A compound in which only part of the hydrogen of the acid has been replaced by a metal is called an acid salt.