A Glossary of Mineralogy |
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Page xiii
... edges . In the octahedron with a rhombic base the axes , as before , connect the opposite solid angles . 4. Oblique System . - This has three unequal axes . The vertical axis is inclined to one of the lateral axes , and at right angles ...
... edges . In the octahedron with a rhombic base the axes , as before , connect the opposite solid angles . 4. Oblique System . - This has three unequal axes . The vertical axis is inclined to one of the lateral axes , and at right angles ...
Page xxvi
... edges before the blowpipe ; of not being acted on by acids ; and of affording , with a cobalt solution , sometimes a clear blue , but generally a dull blue tint . The specific gravity of this group varies from 2.75 to 3.3 , and the ...
... edges before the blowpipe ; of not being acted on by acids ; and of affording , with a cobalt solution , sometimes a clear blue , but generally a dull blue tint . The specific gravity of this group varies from 2.75 to 3.3 , and the ...
Page xxvii
... edges more easily , before the blowpipe , than the preceding group , but give no blue colour to cobalt solu- tions . They are slightly acted on by acids , giving mostly dark green solutions , except in the case of Pyrosclerite , which ...
... edges more easily , before the blowpipe , than the preceding group , but give no blue colour to cobalt solu- tions . They are slightly acted on by acids , giving mostly dark green solutions , except in the case of Pyrosclerite , which ...
Page 3
... edges . Lustre shining . H. 6 . S.G. 2.58 . Comp . Neutral silicate of lime , or Ca Si lime 378 , silica 62.2 = 100. BB fuses to a white translucent glass . Forms a jelly with acids . Localities . Edelfors in Smaoland , Swe- den ...
... edges . Lustre shining . H. 6 . S.G. 2.58 . Comp . Neutral silicate of lime , or Ca Si lime 378 , silica 62.2 = 100. BB fuses to a white translucent glass . Forms a jelly with acids . Localities . Edelfors in Smaoland , Swe- den ...
Page 9
... edges replaced by six- sided planes . Lustre vitreous , shining . Streak white . Fracture subconchoidal , uneven . H. 6.5 to 7.5 . S.G. 3-7 to 4.21 . Analysis by Hisinger , from Fahlun : Silica Alumina Protoxide of iron . Protoxide of ...
... edges replaced by six- sided planes . Lustre vitreous , shining . Streak white . Fracture subconchoidal , uneven . H. 6.5 to 7.5 . S.G. 3-7 to 4.21 . Analysis by Hisinger , from Fahlun : Silica Alumina Protoxide of iron . Protoxide of ...
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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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