The Agnes occurrence is part of the Iron Range showings, located near the crest of the ridge that is west of and parallel to the south flowing portion of the Goat River. The location is centred on a shaft containing iron mineralization on the ridge at the headwaters of Six Mile Creek.
The regional geology, deposit description and local geology for this occurence is similar to that of the American Flag occurrence (082FSE016) which lies approximately 7000 metres to the north.
Iron mineralization occurs as hematite seams within altered quartzites. This zone is hosted in the Middle Proterozoic Middle Aldridge Formation along the north trending, subvertical Iron Range fault zone. The Aldridge Formation in the vicinity of the showings consists of well bedded quartzofeldspathic wacke and laminated siltstone. Gabbroic sills and dikes of the Middle Proterozoic Moyie intrusions also occur in the area.