Minerals And Rocks, the Elements of Mineralogy And Lithology for the Use of Students in General Geology
The book Minerals And Rocks, the Elements of Mineralogy And Lithology for the Use of Students in General Geology was written by author William Shirley Bayley Here you can read free online of Minerals And Rocks, the Elements of Mineralogy And Lithology for the Use of Students in General Geology book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Minerals And Rocks, the Elements of Mineralogy And Lithology for the Use of Students in General Geology a good or bad book?
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DESCEIPTION OF MINERALS 121 Before the blowpipe, apophyllite exfoliates and fuses easily to a white, blebby enamel, and imparts a violet color to the flame. In the closed tube, it yields some water at a low temperature and becomes opaque. The last traces of water are lost only at a red heat. Most specimens react for F. The mineral dissolves in HCl, yielding slimy silica. Apophyllite is recognized by its crystals, its pearly luster on cleavage surfaces and in most instances by the reaction for F.... ZEOLITES The zeolites comprise a group of minerals that are hydrous silicates of Al and of Ca, Sr, Ba, Na and K. The calcium and sodium compounds are the most conunon. Some of them are primary minerals which resulted from the cooling of an igneous magma, but in the great majority of cases they are secondary products that have resulted from the alteration and hydration of alkali- alimiinium silicates, such as the feldspars, leucite, nephelite, etc. They are nearly always found in veins or on the walls of crevices in rocks (especially lavas), where they have been deposited by circulating water.
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