The Elements of economic geology

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Monograph

Identifikator:: 1773832379

URN:: urn:nbn:de:zbw-retromon-172798

Document type:: Monograph

Author:: Gregory, John W. http://d-nb.info/gnd/11683014X

Title:: The Elements of economic geology

Place of publication:: London

Publisher:: Methuen

Year of publication:: 1928

Scope:: XIV, 312 S.; graph. Darst.

Digitisation:: 2021

Collection:: Economics Books

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Chapter

Document type:: Monograph

Structure type:: Chapter

Title:: Part I. Introduction

Collection:: Economics Books

THE ELEMENTS OF ECONOMIC GEOLOGY PART 1 INTRODUCTION CHAPTER 1 THE SCOPE OF ECONOMIC GEOLOGY, AND THE SEARCH FOR ORES Economic Geology applies the principles of geology to the study of the useful materials in the earth’s crust, and to the investigation of their origin and distribution so as to help mining to its ideal—the working of minerals at the least cost and with the greatest profit. How effective geology may ‘be is shown by the statement by J. E. Pogue in his Economics of Petroleum (1921, p. 343) that of an extensive series of American oil-well records, 85 per cent. of the wells sunk in accordance with geological advice proved successful, whereas of those sunk at random, only 5 per cent. were productive. The chief minerals with which the economic geologist has to deal are building stones, slates, and marbles; the materials used for cements, the clays for pottery and bricks, and sands for glass manufacture and moulding ; the mineral fuels, including coal, mineral oil, and peat; the mineral bitumens ; the minerals used as fertilizers, including phosphates, nitrates, potash, and lime; various minerals of service from special physical and optical qualities, such as micas and gems ; the sodium and potassium salts; the ores which furnish the metals indispensable to a civilized community. and

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