The ENEAS A is a postglacial uranium concentration in peat near the junction of Eneas Creek with an unnamed tributary.

This is one of many uranium occurrences discovered by D. G. Leighton & Associates Ltd. in the late 1970s. Work prior to the uranium moratorium in 1980 consisted of auger sampling. The area is underlain by granodiorite of the Jurassic Okanagan Intrusions. Eneas Creek also drains parts of the Eocene Coryell Intrusions.

The occurrence is recent, having formed from the interaction between uranium-rich groundwater and unconsolidated material containing organics or clay. This is a process which is believed to still be taking place (Culbert and Leighton, 1988). The source of the uranium is thought to be the surrounding igneous rocks, where groundwaters rich in carbonate and alkali ions have leached labile uranium from fresh rock exposed after glaciation.

Uranium enrichment occurs in stream sediments and valley soils over an area measuring 59,000 square metres (Culbert, 1979). An auger hole intersected a 3.5-metre thick layer averaging 0.0130 per cent uranium with a 0.5-metre section averaging 0.0232 per cent uranium (Culbert, 1979). The uraniferous layer lies 1.0 metre below the surface (Culbert, 1979). A cross-section of this site shows a 3-metre thickness of peat grading 0.0100 to 0.0250 per cent uranium (Culbert and Leighton, 1988, Fig. 11). The peat layer is interrupted by a thin silt layer at approximately 3 metres depth. A 0.5-metre section grades 0.0250 to 0.0500 per cent uranium at 4.5 metres depth (Culbert and Leighton, 1988, Fig. 11). The section is based on 8 auger holes to 4.5 metres depth. The ENEAS A is classified as a fresh water paleochannel deposit (Culbert and Leighton, 1988, Fig. 14).