The book Economic Geology was written by author Ries, Heinrich, 1871-1951 Here you can read free online of Economic Geology book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Economic Geology a good or bad book?
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The following analyses are given by Harder (Min. Res. 1908), to show the gradation from hard ore to soft ore. ANALYSES OF CLINTON IRON ORE FROM ALABAMA 1 2 " 3 4 Fe . --. ' 3700 45 70 50 44 54 70 SiO-> 7. 14 12. 76 12. 10 13. 70 A1-O 3 381 4 74 606 5 66 CaO 19 20 8. 70 4. 65 . 50 Mn 23 19 21 . 23 S . . . 08 08 07 08 P 30 49 46 10 The unweathered ore is said by Burchard to range fi om a richly ferru- ginous sandstone to a ferruginous- siliceous limestone. New York (55). In this state the outcrop... of the ore extends across the central and western part of the state (Fig. 172). The whole formation dips gently southward, with a gentle north-south synclinal trough in Cayuga and Wayne counties. Both oolitic and fossiliferous ore are found, and at least two beds, and sometimes four, may be present at any given locality. The ore varies in its richness, and while the deposits are very extensive, they have been but little developed. 544 ECONOMIC GEOLOGY FIG. 172. Map showing outcrop of Clinton ore formation in New York State.
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