I I I I I I I I I I Ore Geology and Industrial Minerals An Introduction GEOSCIENCE TEXTS SERIES EDITOR A HALLAM Lapworth Professor of Geology University of Birmingham Engineering Geology F.C BEAVIS Ore Geology and Industrial Minerals: An Introduction A.M EVANS An Introduction to Geophysical Exploration P KEAREY AND M BROOKS Principles of Mineral Behaviour A PUTNIS AND J.D.C MCCONNELL The Continental Crust S.R TAYLOR AND S.M MCLENNAN Sedimentary Petrology: an Introduction M.E TUCKER GEOSCIENCE TEXTS Ore Geology and Industrial Minerals An Introduction ANTHONY M EVANS BSc, PhD, MIMM, FGS Fonnerly Senior Lecturer in Mining Geology University of Leicester THIRD EDITION A Blackwell II Publishing ~ ~ © 1980,1987,1993 by Blackwell Science Ltd a Blackwell Publishing company BLACKWELL PUBLISHING 350 Main Street, Malden, MA 02148-5020, USA 9600 Garsington Road, Oxford OX4 2DQ UK 550 Swanston Street, Carlton, Victoria 3053, Australia The right of the Author to be identified as the Author of this Work has been asserted in accordance with the UK Copyright, Designs, and Patents Act 1988 All rights reserved No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, except as permitted by the UK Copyright, Designs, and Patents Act 1988, \vithout the prior permission of the publisher First published 1980 under the title An Introduction to Ore Geology Chinese edition 1985 Second edition 1987 German edition 1992 Malaysian edition 1989 Japanese edition 1989 Third edition 1993 15 2009 Library of Congress Calaloging-in-PulJlication Data Evans, Anthony M Ore geology and industrial minerals/Anthony M Evans, - 3rd ed p em - (Geoscience texts) Rev ed of: An Introduction to ore geology, 2nd ed 1987 Includes index ISBN 978-0-632-02953-2 Ore deposits Industrial minerals Evans, Anthony M Introduction to ore geology II Title III Series QE390.E92 1993 553'.1 -