Figured very conservatively the Table Mountain claims cover a deposit that contains 26 million tons of measured reserves of recoverable nepheline syenite, out of a total volume indicated to be 525 million tons.

Evaluations of this deposit were made following the guidelines published by the U.S. Geological Survey (Circular 831) defining:

Measured Resources

Where grade, quality, is known, and the quantity is computed from specific geologic evidence and dimensions revealed in outcrops, trenches, workings, or drill holes.

Indicated Resources

Where quantity is computed from grade and quality information similar to that used for measured resources, with an assumed continuity between points of observation.

According to Bulletin 81 (1973) Environmental Geology of Lincoln County, Oregon, by the Oregon Department of Geology & Mineral Industries, and Henry Harris (1962) Economics of Coast Range Igneous Rocks in Oregon, U.S. Bureau of Mines unpublished report, the deposit is 300 feet thick, and covers one square mile.

The Oregon Department of Geology & Mineral Industries Bulletin assumes, from the vertical relief of the deposit (ie: the elevation difference from outcrops on the top of the mountain, to the bottom of the exposure, adjusted for the angle of the slope), an indicated total of 700 million tons of recoverable syenite.

The measured figure was calculated using a depth of only 15 feet across this area as proven. There are numerous natural exposures, and man made exposures in excess of 15 feet that show the material nepheline syenite in place.

An adjustment in the total was made to compensate for the fact that a portion of the deposit is on a section (36) set aside as State of Oregon School Lands, and as such is not open to mineral entry. The Table Mountain claims cover approximately 75% of the mineral deposit, which is the figure used to compute the total of 26 million tons of measured recoverable nepheline syenite, and 525,000,000 indicated tons of recoverable nepheline syenite.

The U. S. Geological Survey Professional Paper 840, which features the Table Mountain nepheline, suggests the deposit may be 400 feet thick. Using this higher number the measured quantity would be closer to 35 million tons, and the indicated quantity would be in the 700 million ton range.