A Glossary of MineralogyLongman, Green, Longman, and Roberts, 1861 - 420 страници |
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Страница xiv
... less degree by the Precious Opal . A Change of Colours is of a somewhat similar nature to the play of colours , only the succession of colours is less rapid , and each particular one is spread over a larger surface . Labradorite ...
... less degree by the Precious Opal . A Change of Colours is of a somewhat similar nature to the play of colours , only the succession of colours is less rapid , and each particular one is spread over a larger surface . Labradorite ...
Страница xvi
... less luminous they are said to be phos- phorescent . That property may be produced either , 1st , by friction , as in Quartz ; 2nd , by heat , as in Fluor Spar ; 3rd , by electricity , as in Diamond , Calc Spar , Apatite , and some ...
... less luminous they are said to be phos- phorescent . That property may be produced either , 1st , by friction , as in Quartz ; 2nd , by heat , as in Fluor Spar ; 3rd , by electricity , as in Diamond , Calc Spar , Apatite , and some ...
Страница xvii
... less resemblance to those in the inside of a bivalve shell . Flint and glass are good examples of this kind of fracture . 2. Even when the fractured surface is not rendered rough by the pre- sence of any minute elevations or depressions ...
... less resemblance to those in the inside of a bivalve shell . Flint and glass are good examples of this kind of fracture . 2. Even when the fractured surface is not rendered rough by the pre- sence of any minute elevations or depressions ...
Страница xviii
... less than in air , and the difference between the weight in water and the weight in air , or the loss in weight it has sustained by immersion , will represent the weight of a quantity of water equal in bulk to the substance operated on ...
... less than in air , and the difference between the weight in water and the weight in air , or the loss in weight it has sustained by immersion , will represent the weight of a quantity of water equal in bulk to the substance operated on ...
Страница xxvi
... less perfect . Orthoclase may be recognised from the other varieties of Felspar , by having the two cleavage - planes at right angles to each other . The Zeolites are most frequently associated together in cavities or cracks in ...
... less perfect . Orthoclase may be recognised from the other varieties of Felspar , by having the two cleavage - planes at right angles to each other . The Zeolites are most frequently associated together in cavities or cracks in ...
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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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