The occurrence is a part of the Iron Range showings (082FSE014–-028), which are located near the crest of the ridge that is west of and parallel to the south-flowing portion of the Goat River. The Constellation showing (082FSE028) is located approximately 1.4 kilometres to the northeast.
Regionally, the area is underlain by the peri-cratonic Middle Proterozoic Purcell Supergroup, a thick succession of siliciclastic and lesser carbonate rocks. The Purcell Supergroup is well known for hosting a number of significant deposits that include the Sullivan sedimentary-exhalative lead-zinc deposit (082FNE052) and the Troy copper-silver deposit in Montana.
These occurrences are closely associated with the Iron Range fault and the strata here forms part of the core of the Goat River anticline. They comprise a belt of iron oxide mineralization up to 200 metres wide with an intermittent strike length of at least 20 kilometres.
In 2005, a drill hole (IR05003) yielded 0.65 per cent lead, 0.45 per cent zinc, 46 grams per tonne silver and 3.82 grams per tonne gold over 2 metres (Therriault, R. (2012-03-15): NI-43-101 Compliant Technical Report on the Iron Range Precious and Base Metal Property).
During 2010, drilling intersected two intervals of gold-bearing massive sulphide mineralization on hole IR10-010. The lowermost zone consists of finer-grained, gold-bearing massive sulphide material at a depth of 275.5 to 279.5 metres, truncated by a fault, which is interpreted to be at or near the Lower–Middle Aldridge contact, the stratigraphic horizon that hosts the Sullivan deposit. Selected intervals from hole 10 include: 14.0 metres at 5.1 grams per tonne gold, 1.86 per cent lead, 2.1 per cent zinc and 75.3 grams per tonne silver from 192.0 to 206.0 metres depth and 56.5 metres at 1.9 grams per tonne gold, 0.44 per cent lead, 0.59 per cent zinc, 21.5 grams per tonne silver from 224.0 to 280.5 metres depth (Eagle Plains Resources Ltd., Press Release - Decemeber 21, 2010). Other drilling intercepts, in 2010, yielded included 56.3 grams per tonne gold, 51.5 grams per tonne silver, 1.31 per cent lead and 1.7 per cent zinc over 1.0 metre in hole IR10005 (Therriault, R. (2012-03-15): NI-43-101 Compliant Technical Report on the Iron Range Precious and Base Metal Property).
In 2011, diamond drilling yielded intercepts including 1.027 grams per tonne gold over 29.30 metres in hole IR11011; 0.469 gram per tonne gold over 54.0 metres in hole IR11013; 1.279 grams per tonne gold, 20.4 grams per tonne silver, 0.34 per cent lead and 0.3 per cent zinc over 71.0 metres in hole IR11015; 0.568 gram per tonne gold, 0.13 per cent lead and 0.27 per cent zinc over 41.0 metres in hole IR11019; 0.418 grams per tonne gold, 15.4 grams per tonne silver, 0.15 per cent lead and 0.19 per cent zinc over 61.0 metres in hole IR11020; 0.4 gram per tonne gold and 9.7 grams per tonne silver over 79.0 metres in hole IR11025 and 0.5 gram per tonne gold, 6.3 grams per tonne silver and 0.15 per cent zinc over 101.4 metres in hole IR11026 (Therriault, R. (2012-03-15): NI-43-101 Compliant Technical Report on the Iron Range Precious and Base Metal Property).
The area has been explored since the late 1890’s and a completed regional exploration history can be found at the O-Ray (MINFILE 082FSE017) occurrence.
