The Freeman prospect is on the northwest bank of the Similkameen River, 4 kilometres southwest of Princeton.

This coal prospect is in the south-central part of the Princeton Basin, a northerly trending fault-bounded trough filled by Eocene volcanic rocks of mainly intermediate composition, comprising the Lower Volcanic Formation, and an overlying Eocene sedimentary sequence of sandstone, shale, waterlain rhyolite tephra (tuff) and coal, up to 2000 metres thick, comprising the Allenby Formation.

The deposit is 150 metres stratigraphically above the Golden Glow coal zone, one of four significant coal-bearing zones in a 530-metre section in the Allenby Formation (Princeton Group) (Paper 83-3, Figure 12).

The river bank exposes a coal-bearing section, 17.0 metres thick, striking 095 degrees and dipping 20 degrees south. The section contains up to 9.11 metres of clean coal in eight seams 15 to 213 centimetres thick (Paper 83-3, Figure 13B). Four of them have a maximum thickness of at least 106 centimetres. The seams are interbedded with shale, and lesser sandy shale, shaly coal and sandstone.

An adit, located across the river to the east, exposes a 1.7-metre thick section of mostly shaly coal with 34 centimetres of clean coal at its base. The section is overlain by sandstone and underlain by bentonite.