UNT Libraries Government Documents Department - 2 Matching Results

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The Feldspars of the New England and North Appalachian States
From Introduction: "The investigations presented in this bulletin have been undertaken by the bureau with a view to a better understanding of the conditions which confront the producer of commercial feldspar and also with the object of determining wherein the various deposits of feldspar differ."
Morefield Pegmatite Mine, Amelia County, Virginia
Report issued by the Bureau of Mines over the pegmatite mine in Amelia County, Virginia. The physicality, geology, and mining methods are presented. This report includes tables, maps, and illustrations.