The Common Rocks and Minerals of Missouri

W. D. KELLER
UNIVERSITY OF MISSOURI PRESS • COLUMBIA
University of Missouri Press, Columbia, Missouri 65201
ISBN 0-8262-0585-2
Library of Congress Card Number 67-66173
Printed and bound in the United States of America
All rights reserved
First Edition 1945
Revised Editions 1948, 1961
Reprinted 1971, 1973, 1978, 1986, 1989, 1992, 2004
Missourians are interested in the rocks and minerals which they find on their farms, in excavations, and while on their vacation trips. Some of the specimens are unusual in shape or appearance, some are crystalline and beautiful, some may be ores of economic importance, but many simply arouse the curiosity of the finder.
Many of these specimens are received each year at the University at Columbia, and each is usually accompanied by a request for information on the correct name for the specimen, its composition, its commercial value, and the manner of its formation.