Introduction to the Study of Minerals; a Combined Textbook And Pocket Manual
The book Introduction to the Study of Minerals; a Combined Textbook And Pocket Manual was written by author Austin Flint Rogers Here you can read free online of Introduction to the Study of Minerals; a Combined Textbook And Pocket Manual book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Introduction to the Study of Minerals; a Combined Textbook And Pocket Manual a good or bad book?
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Lead chromate, PbCrO^; (Pb=64.1 per cent.). Blowpipe Tests. Easily fusible m) on charcoal giving a metallic button. In the closed tube turns dark and decrepitates. Digitized by Google 374 INTRODUCTION TO THE STUDY OF MINERALS Occurrence. 1. A secondary mineral in the gossan. Near Dundas, Tasmania, crocoite occurs in a limonite matrix. Kainite, MgSO^KCl 3H2O Form. Kainite usually occurs in granular masses. H. = 2i. Sp.gr. ±2.1. Color, white, colorless or reddish. Optical Properties, w/1.52) - n^...(1.49) =0.03. Recrystallizes from water solution in the following order: (1) K2Mg(S04)2* 6H2O, prismatic crystals with oblique extinction. (2) KCl, iso- tropic squares. (3) MgS04-7H20 and MgCl2-6H20, confused streaky aggregates. Fig. 517 represents the three stages of crystallization. The equation is 3MgSO,KCl = K2Mg(SO,)2 + KCl + MgSO^ + MgCl2 (water is omitted) . Cbemical Composition. Hydrous mag- nesium sulfate and potassium chlorid. MgSO,-KCl-3H20; (H20 = 21.7 per cent.). Blowpipe Tests. Easily fusible (2) color- ing the flame violet.
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