![](https://msaweb.org/MSA/AmMin/wp-content/uploads/2023/05/MSA-AmMin-Logo-300x295.png)
American Mineralogist
![](https://msaweb.org/MSA/AmMin/wp-content/uploads/2023/07/MSA-Logo-300x300.png)
![](https://msaweb.org/MSA/AmMin/wp-content/uploads/2023/09/FreeAccess-300x180.png)
REGULAR ARTICLE
563 The genesis of pegmatites. I. Occurrence and origin of giant crystals
599 Beryllium minerals in the Victorio Mountains, Luna County, New Mexico
612 “Lipscombite, a new synthetic “”iron lazulite”””
629 Afwillite from Crestmore, California
634 Allophones from Lawrence County, Indiana
643 Reexamination of the crystal structure of melilite
662 Density determination by a modified suspension method, x-ray molecular weight, and soundness of sodium chloride
671 Fluid inclusions in minerals from zoned pegmatites of the Black Hills, South Dakota
698 A classification of the 2:1 clay minerals
707 Purification and properties of montmorillonite
728 Augelite from pegmatites in New Hampshire
729 A proposed petrographic method for the rapid determination of ilmenite
730 Hopper crystals of halite in the Salina of Michigan
NOTES and NEWS
725 Notes and News: On the distinction of sillimanite from mullite
BOOK REVIEW
738 Book reviews
PROCEEDINGS
734 Mineralogical Society (London)
![](https://msaweb.org/MSA/AmMin/wp-content/uploads/2023/05/table-of-contents-v3-1024x683.png)
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.
![](https://msaweb.org/MSA/AmMin/wp-content/uploads/2023/05/special-collections-1024x683.png)
Special Collections
American Mineralogist is an international journal that publishes mineralogical papers of broad interest to the geoscience and materials science community.