A Glossary of Mineralogy |
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Page xii
... Hexagonal or Rhombohedral . * 1. The Cubical System — has three equal axes , intersecting one another at at right angles . Thus , in the cube , the regular octahedron and the rhombic dodecahedron , which belong to this system , the ...
... Hexagonal or Rhombohedral . * 1. The Cubical System — has three equal axes , intersecting one another at at right angles . Thus , in the cube , the regular octahedron and the rhombic dodecahedron , which belong to this system , the ...
Page xiii
... Hexagonal , or Rhombohedral . - In this system there are three equal lateral axes , intersecting at an angle of 60 ° , and one vertical axis at right angles to them . It comprises the hexagonal prism and the rhombohedron . In the former ...
... Hexagonal , or Rhombohedral . - In this system there are three equal lateral axes , intersecting at an angle of 60 ° , and one vertical axis at right angles to them . It comprises the hexagonal prism and the rhombohedron . In the former ...
Page xv
... refraction , except those be- longing to the Cubical System , which have three axes equal to one another . In the Pyramidal and Hexagonal ( or Rhombohedral ) Systems , in which the xvi INTRODUCTION . horizontal axes are equal , there is.
... refraction , except those be- longing to the Cubical System , which have three axes equal to one another . In the Pyramidal and Hexagonal ( or Rhombohedral ) Systems , in which the xvi INTRODUCTION . horizontal axes are equal , there is.
Page xxvii
... hexagonal crystals , which give the reaction of copper . In the following work , under the head of Comp . ( Composition ) , is repre- sented , by means of a formula , the chemical composition of each mineral , supposing it to be ...
... hexagonal crystals , which give the reaction of copper . In the following work , under the head of Comp . ( Composition ) , is repre- sented , by means of a formula , the chemical composition of each mineral , supposing it to be ...
Page 13
... hexagonal crystals , which are rarely so distinct as those of Quartz , being generally united together for the entire length of the prisms , so that only the pyra- midal terminations are separated from each other . For this reason ...
... hexagonal crystals , which are rarely so distinct as those of Quartz , being generally united together for the entire length of the prisms , so that only the pyra- midal terminations are separated from each other . For this reason ...
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Common terms and phrases
Alumina Analysis antimony arsenic Barytes BB fuses BB on charcoal Beudant blue Bohemia borax Breithaupt Brit Brittle Brochant brown carbonate cerium cleavage Coal cobalt colourless Comp conchoidal Cornwall Crown 8vo crystals Dana Dufrénoy earthy Felspar fibrous flame Fracture conchoidal Fracture uneven Garnet glass globule granular green grey Haidinger Harz Hausmann Haüy Hornblende Huel intumescence Jameson Kirwan Kobell lead Lime Magnesia Localities Lustre Lustre vitreous M. P. G. Horse-shoe M. P. G. Principal Floor Magnesia manganese masses mineral Mohs muriatic acid name given nickel Nicol nitric acid octahedrons opaque Oxide Oxide of copper pearly Peroxide of iron Phillips Phosphoric acid Potash primary form Protoxide of iron Protoxide of manganese Pyrites Quartz resembling resinous rhombic prism RHOMBOHEDRAL rocks Saxony Silica Silica Alumina Peroxide silver Soda Soluble sometimes SPAR stone Streak white sulphate sulphuric acid Tellurium Titanic acid Topaz translucent transparent variety Wall-case Water Werner yellow yellowish
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