The ALCES anomaly is centred on an aero-magnetic high in a gravel pit on the north side of Alces River, 40 kilometres east of Fort St. John, B.C., 11 kilometres west of the Alberta border.

The area was initially targeted and explored for potential kimberlite host by Tul Petroleums Ltd. in 1996 and 1997. The Alces River-Flathead Creek area was prospected and sampled, noting the occurrence of volcanic rocks, occurrences of irony beds indicating weathering of ultramafics and making microscopic observations for garnet, chrome, diopside, ilmenite, chromite and other kimberlitic, lamproitic or lamprophyric indicators and diamond indicators. An aero-magnetic survey was also conducted in 1996 (Assessment Reports 25081 and 25541).

In 2002 Diamant Resources Ltd. resampled the gravel pit and streams. Of the three samples observed for kimberlitic indicator minerals, three returned indicator grains. The minerals useful as indicators for kimberlites and, to a certain extent, in the evaluation of the diamond potential of a kimberlite include peridotitic-pyrope, eclogitic pyrope, chrome-diopside, picro-ilmenite, chromite and olivine.