LABORATORY AND CHEMICAL ANALYSIS 3

Aluminum Content.
The Al2O3 content in the nepheline syenite at Table Mountain is very consistent. It ranges from 18.25% to 19.35%, values primarily in the 18.5% to 19% range. Further technical and economic studies are necessary to determine the viability of the prospect for aluminum recovery.*

Calcium Content.
The CaO values range from 0.85% to 1.28%. These values are low enough for ceramic applications.

Niobium and Zircon Content. .
In ppm, Nb between 266.7 - 300.0 while Zr ranges between 1210 -1294. These two elements are very refractory and have a high melting point: Nb (24770C, 44910F) and Zr (1855 0C, 3371 0F). At this point it is not known how these two elements might impact the formation of ceramic material. The zirconium, due to its high specific gravity may be removed by gravity means.

Rare Earths (REE).
Lanthanum and cerium are present in elevated concentrations. They are likely contained in the mineral apatite given the P2O5 content of syenites. As a reference, lanthanum in the form of La2O3, improves the alkali resistance of glass. Cerium compounds are also used in the manufacture of glass, both as a component and as a decolorizer. In glass cerium (IV) oxide allows selective absorption of ultraviolet light.

Transition Metals.
Transition metals except for zinc have very low concentrations reflecting the very low magnesium concentration of these rocks and the relative moderate iron content.

Alkaline Earth Metals.
Strontium, barium and the alkali metal, rubidium, are likely to be distributed in both the minerals apatite and orthoclase/microcline feldspar.

Alkalis (Na2O+K2O).
Most commercial nepheline syenites contain more than 15% alkalis (Na2O+K2O). The ne-syenite at table mountain has an average alkalis value of 12.52%.

*The largest nepheline syenite deposit in the world is in the Kola Peninsula in Russia and it is for alumina with REE’s as a byproduct.