Abstract

The specimens upon which this brief description is based were obtained by Mr. Cecil Carroll, a student in the University of Missouri, during the summer of 1927. At the suggestion of Mr. Walter D. Keller, one of his instructors, the specimens, were given to the writer. The occurrence of doubly terminated quartz crystals in massive gypsum is so unusual that the following notes describing them have been prepared.

This content is PDF only. Please click on the PDF icon to access.

First Page Preview

First page PDF preview
You do not currently have access to this article.