The Geology and Development of the Tucker Hill Perlite Deposit, Lake County, Oregon

摘要

The Tucker Hill perlite deposit of Cornerstone Industrial Minerals Inc. (Cornerstone) is located in south-central Oregon. The mine is 35 miles north of the processing facility, which is located in the town of Lakeview, Oregon (fig.1). The ore is transported to customers hy truck or rail from the Lakeview plant or the Henley trans-loading facility located near Klamath Falls, Oregon. The mine property consists of 800 acres of unpatented mining claims located on land administered by the Bureau of Land Management. Within the mining claims, drilling and sampling have delineated a perlite reserve of 5.3 million tons. Test work on core and bulk samples indicates that the Tucker Hill perlite exceeds industry standards for expanded density, furnace yield, and compacted density. The processing facility is located on an industrial park in Lakeview; it is served by a good highway and is on a rail spur operated by a county short line carrier that is linked to the Union Pacific Railroad. System at Alturas, California. Cornerstone also owns and operates a trans-loading terminal in Klamath Falls on the Burlington Northern Railway system, with service to customers throughout the Pacific northwest and Canada. Processed perlite is trucked from the processing facility to the trans-loading terminal. The company sold approximately 90,000 tons of perlite in 2002. It presently ships to customers in 16 states and provinces throughout the United States and Canada as well as by ship to customers along the Pacific Rim.