The Crooked Creek showing area is underlain by Devonian metadsedimentary and metavolcanic rocks of the Stikine Assemblage. The Devonian Forrest Kerr Pluton is in contact the immediate west of the Stikine rock. Plutonic rocks consist primarily of Late Devonian granite and diorite.
Locally, andesite flows, minor feldspar porphyry andesite and crystal tuff are overlain by intercalated tuffaceous sediments and carbonaceous shales. The Crooked Creek showings comprise two groups of mineral occurrences, each in different but adjacent lithologies. The more westerly showing, hosted by phyllitic, graphitic argillites, occurs discontinuously along a 1 to 5-metre wide zone of shearing traceable for a length of 100 metres. The shear zone, striking 025 degrees and dipping 70 degrees east, is sub-parallel to axial planar cleavage displayed by minor folds within the argillites. Mineralization comprises chalcopyrite and pyrite with a gangue of silica and iron carbonate. Approximately 55 m to the east within the underlying porphyritic andesites arsenopyrite-bearing quartz veins have been identified. The veins are similar in nature to the arsenical quartz veins of the Creek (104B 489) showing area and are likely related to a similar regime of structural deformation and mineralizing events.
The Crooked Creek zone, is a zone of significant mineralization postulated to be the strike extension of the Creek Zone (104B 489) which lies across the valley about 1.5 kilometres to the south.
Drill Holes F95-1 and 2 tested the showings to depth. While down dip extensions of the showings are thought to have been encountered, the assays of drill core reported relatively low gold and copper values. The highest assay in Hole F95-1 was at 94.8 metres where sample 57025 reported 1.2 grams per tonne gold and 0.07 per cent copper over 0.7 metre (Assessment Report 24156). In Hole F95-2 at 76.9 metres, sample 57053 containing a chalcopyrite bearing quartz vein assayed 1.78 grams per tonne gold and 0.74 per cent copper over 0.2 metre (Assessment Report 24156). Both holes bottomed in relatively massive andesite containing few quartz-carbonate stringers. Sampling in 1990 Sampling down dip along the cliff face for approximately 100 metres and along strike for approximately 75 metres yielded high gold values up to 36.34 grams per tonne and copper up to 6.21 per cent (Assessment Report 23629).
The 1994 program of Abacus Minerals was designed primarily to gain a stronger understanding of the Crooked Creek zone, where some of the highest values in gold and copper have been identified to date on the Forrest Project. Drilling in 1995 by Meridian Peak Resources tested the Crooked Creek zone. See Forrest (104B 380) for a common work history of the Forrest Property.