A Summary of Progress in Petrography. in 1887-1896 |
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... eral which best illustrates the power of fluorine to replace hydroxyl in a chemical compound is herderite , which has re- cently been shown by these same investigators to consist of an isomorphous mixture of CaBeFPO , and CaBe ( OH ) PO ...
... eral which best illustrates the power of fluorine to replace hydroxyl in a chemical compound is herderite , which has re- cently been shown by these same investigators to consist of an isomorphous mixture of CaBeFPO , and CaBe ( OH ) PO ...
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... eral conclusions in regard to the origin of meteoric bodies , which , although exceedingly interesting , it would be impossible to in- corporate in these notes in any logical sequence . Crystallographic News . - Quite a number of new ...
... eral conclusions in regard to the origin of meteoric bodies , which , although exceedingly interesting , it would be impossible to in- corporate in these notes in any logical sequence . Crystallographic News . - Quite a number of new ...
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... eral is monoclinic with the axial angle ß = 90 ° 26 ′ and the axial ratio 0.82144 : 1 : 0.87111 . — New crystallographic planes have also been discovered by Sansoni on calcite from Blaton , Bel- gium . Sansoni 5 also mentions the fact ...
... eral is monoclinic with the axial angle ß = 90 ° 26 ′ and the axial ratio 0.82144 : 1 : 0.87111 . — New crystallographic planes have also been discovered by Sansoni on calcite from Blaton , Bel- gium . Sansoni 5 also mentions the fact ...
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... eral , have re - examined it . They find it to be composed as follows : SiO2 15.33 B203 44.52 CaO 27.94 Na2O 0.53 K2O 0.13 H2O 11.55 They regard it as a distinct species with the formula H , Ca , B , SIO14 . -Cassiterite . - The tin ...
... eral , have re - examined it . They find it to be composed as follows : SiO2 15.33 B203 44.52 CaO 27.94 Na2O 0.53 K2O 0.13 H2O 11.55 They regard it as a distinct species with the formula H , Ca , B , SIO14 . -Cassiterite . - The tin ...
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Common terms and phrases
acid alteration Amer American Naturalist analysis yielded andesites apatite augite axial ratio basalts calcite calcium carbonate cent chemical cleavage clinopinacoid composition compounds Comptes Rendus constituents contains corresponding County crystallographic described diabase diallage diopside Edited by Dr eral examined Fe,O feldspar forms formula garnet Geol Geological glass glaucophane gneisses grains granite ground-mass H₂O hemimorphic heulandite hexagonal hornblende inclusions intergrown isomorphous Jour K₂O Kryst Madison magma magnesium magnetite manganese meteoric iron meteorites Mexico mica microscope MINERALOGY AND PETROGRAPHY Mitth mixture monoclinic Na,O Na₂O Neues Jahrb norites olivine origin orthoclase orthorhombic parallel Penfield Petrog PETROGRAPHY plagioclase pleochroic porphyritic porphyritic crystals possess potassium prismatic Professor Genth pseudomorphs pyroxene quartz recently refractive regard result rocks rutile Schefferite schists serpentine silicates SiO2 sodium specific gravity specimens structure substance supposed tion topaz tourmaline twinning plane variety W. S. BAYLEY xxxii Zeits