ANALYSES OF SILICATE ROCK AND MINERAL STANDARDS

Abstract

Bulk chemical analyses including some minor constituents are reported for six standard silicate rocks available from the U.S. Geological Survey. In addition to the conventional rock analyses, determinations of a number of constituents have been made by various instrumental methods. Three new standard mineral samples are available from The Pennsylvania State University. These include albite from Amelia County, Virginia; adularia from Val Cristallina, Switzerland; and pyroxene from near Libby, Montana.