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
acid aluminum ANGLESITE APATITE aragonite augite axes axis barite bead bipyramidal Blowpipe Tests blue borax c-axis calcite calcium carbonate CASSITERITE cent cerussite chalcopyrite charcoal Chemical Composition Cleavage closed tube gives cobalt colorless compounds copper crossed nicols crystalline crystals cube dark diopside direction Ditrigonal double refraction Easily fusible faces flame fluorite Fragments are irregular Fragments are prismatic Fuses goniometer green gypsum H₂O H₂SO habit heated HEMATITE hkil Hydrous igneous rocks index of refraction indices Infusible Insoluble Interfacial angles interference figure iron isometric isomorphous light limestones Luster magnetite masses metallic monoclinic NaPO occurs Optical Properties order interference colors orthoclase orthorhombic oxids Pinacoid plane prism pyramids pyrite quartz represents rhombic rhombohedron salts secondary mineral silicates soda sodium Soluble in HCl solution sphalerite sublimate sulfate sulfids sulfur symmetry Tetragonal tourmaline trapezohedral TREMOLITE triclinic Trigonal twin twin-plane Usual forms vein mineral yellow
Priljubljeni odlomki
Stran 165 - Ra Rn Re Rh Rb Ru Sm Sc Se Si Ag Na Sr S Ta Te Tb Tl Th Tm Sn Ti W U V Xe Yb Y Zn Zr...
Stran 107 - ... interest to the pulp manufacturer is its density or specific gravity. This property has a direct bearing on the volumetric yield of fiber that can be obtained, and it usually influences the penetration of cooking liquors into the chip. Specific gravity is defined as the dry weight of a given volume of a substance divided by the weight of an equal volume of water. In the case of wood, it is more convenient to determine the volume of the material in the undried, or green, state by its buoyancy...
Stran 3 - If we prove that a2 = 62 + c2 — 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 162 - 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...
Stran 186 - Na 2 CO 3 + SiO 2 = Na 2 SiO 3 + CO 2 . (The bead will be clear if equal molecular quantities are used.) XII.
Stran 198 - To detect the state of the iron, a borax bead made blue with CuO (or malachite) is changed to opaque red by a ferrous compound, and to green by a ferric compound. (Use a neutral flame).
Stran 105 - SCALE 1. Talc 6. Orthoclase 2. Gypsum 7. Quartz 3. Calcite 8. Topaz 4. Fluorite 9. Corundum 5. Apatite 10. Diamond The...
Stran 162 - Arsenic As Barium Ba Beryllium Be Bismuth Bi Boron B Bromine Br Cadmium Cd Caesium Cs Calcium Ca Carbon C Cerium Ce Chlorine Cl Chromium • Cr Cobalt Co Copper Cu Erbium Er Fluorine F Gadolinium Gd Gallium Ga Germanium Ge Gold Au Helium.
Stran 9 - Hence the law of constancy of interfacial angles, "in all crystals of the same substance, the angles between corresponding faces are...
Stran 63 - ... of them are parallel, that is the parallelism is either complete or partial. Aggregates with partial parallelism are •called twins and are usually composed of two individual crystals united in a definite way. One individual appears to have been revolved 180° about a line called the twin-axis and the plane normal to this axis is called the twinplane. The face of union of the two individuals, which may or may not be the twin-plane, is the •composition-face.