American Mineralogist
REGULAR ARTICLE
1 The Morgenthau collection
3 Cleavable bornite from Usk, B. C.
4 Cristobalite in the spherulitic obsidian from Yellowstone National Park
6 Massive laumontite from Montana
7 The minerals of Madison County, Missouri
ABSTRACTS and PROCEEDINGS
18 Proceedings of societies, and abstracts
20 Proceedings of societies, and abstracts
NEW MINERAL NAMES
12 New mineral species described during 1916-1920
NOTES
11 Note on the measurement of the density of minerals
TABLE OF CONTENTS
&
SPECIAL COLLECTIONS
Table of Contents
AmMin submission to acceptance/”first publication” is at a record average of about three to four months. Our acceptance to “final” publication is presently another 13 months on average.
Special Collections
American Mineralogist is an international journal that publishes mineralogical papers of broad interest to the geoscience and materials science community.