American Mineralogist
REGULAR ARTICLE
255 Gratonite-a new mineral from Cerro de Pasco, Peru
266 Geologic occurrence of gratonite at Cerro de Pasco, Peru
271 Optical properties and chemical composition of magnesian orthopyroxenes
286 Reliable and rapid method for distinguishing quartz and untwinned feldspar with the universal stage
297 “Discussion of “”The formula of jordanite”””
302 Color blindness among students of mineralogy
303 Radioactive standards
305 Microfilm sets of periodicals
NEW MINERAL NAMES
312 New mineral names
NOTES
299 Notes on refractive index liquids
BOOK REVIEW
305 Book reviews
PROCEEDINGS
309 Proceedings of societies
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.