INTRODUCTION

A reconnaissance-sampling program of the nepheline syenite at Table Mountain, Oregon, was conducted by a consulting geologist, on October/November, 2007.

Laboratory analyses of 17 samples were obtained to determine the chemical composition of the deposit. The reported nepheline values were marginal but somewhat promising considering the sizeable reserves. These reserves are estimated to be 700 metric tons, an economically feasible extraction through open pit means.

- The iron content obtained in the lab results is high (5-6%), restricting the straight use of the ore in high quality ceramics.
- Beneficiation testing by the Bureau of Mines (1962) apparently failed to remove the iron content, however no details are known regarding the testing.
- However, the application of a new biological agent technology reportedly can remove the iron content.
- It is recommended that cathodoluminescence research be conducted on selected samples to verify which host mineral(s) contain the iron fraction. The results will serve as a foundation for any future beneficiation tests.
- The location of the deposit plus its accessibility and excellent infrastructure justify the preliminary investment in market research and economic viability of a variety of potential products that do not require the removal of the iron content.