The Maggie Brown prospect is located 1.75 kilometres south of Fish Lake on the divide between Stenson and McGuigan creeks. The prospect is slightly higher in elevation than the Gringo prospect (082KSW022) and nearly 2 kilometres southeast of the former Lucky Jim mine (082KSW023).

The Maggie Brown prospect lies on an extension of the limestone bed at the former Lucky Jim mine. Workings consist of an adit driven southwest towards this limestone bed. The adit intersected slate of the Triassic Slocan Group. Three mineralized calcite stringers were intersected. The two nearest the face are 2 to 5 centimetres wide and host galena.