Rocks And Rock Minerals; a Manual of the Elements of Petrology Without the Use of the Microscope, for the Geologist, Engineer, Miner, Architect, Etc., And for Instruction in Colleges And Schools
The book Rocks And Rock Minerals; a Manual of the Elements of Petrology Without the Use of the Microscope, for the Geologist, Engineer, Miner, Architect, Etc., And for Instruction in Colleges And Schools was written by author Pirsson, Louis V. (Louis Valentine), 1860-1919 Here you can read free online of Rocks And Rock Minerals; a Manual of the Elements of Petrology Without the Use of the Microscope, for the Geologist, Engineer, Miner, Architect, Etc., And for Instruction in Colleges And Schools book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Rocks And Rock Minerals; a Manual of the Elements of Petrology Without the Use of the Microscope, for the Geologist, Engineer, Miner, Architect, Etc., And for Instruction in Colleges And Schools a good or bad book?
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2. Pyroxene, (M g Fe)Ca(Si0 3 ) 2 . process begins with metallic 3 Plagioclase S mCaAl 2 Si 2 8 - oxides whi ch contain no ' lnNaAlSi 3 8 . silica, that next come the 4. Orthoclase, KAlSi 3 8 . ferromagnesian minerals, yua z, i 2 . ortho and metasilicates, then feldspars which contain more silica and finally quartz or free silica. Thus there tends to crystallize out successively minerals richer and richer in silica. It is not to be understood however that one mineral necessarily finishes its pe...riod of crystallization before another one begins as in A, but rather that they overlap Mag. Pyrox. Plag. Orthoclase. Quartz. B Mag. Pyrox. "Bag. Orthoclase. Quartz. as in B, that is, that one may begin before another has finished, and continue after the former has ceased. Expe- rience shows that with orthoclase and quartz the overlap is so great that they crystallize nearly simultaneously, only orthoclase usually begins and quartz finishes. Insolubility vs. Infusibility. A molten silicate magma is to be regarded as a complex solution of some compounds in others, like a solution of mixed salts in some solvent such- GENERAL PETROLOGY OF IGNEOUS ROCKS 149 as water.
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