The Rush of the Bull occurrence is situated approximately 3 kilometres southeast of Spider Peak and 1 kilometre north of the Carolin mine (MINFILE 092HNW007).
The area is underlain by sediments of the Lower to Middle Jurassic Ladner Group, which here include grey to black, locally organic-rich, pyritic, slaty argillite in contact with well-bedded siltstone along a splay of the East Hozameen fault. Minor northwest- striking bands of medium to very coarse-grained, tuffaceous, fossiliferous wacke also occur within the sequence.
Locally, the sedimentary rocks have been intruded by narrow felsic sills and dikes up to four metres thick, similar to those associated with gold occurrences in the Siwash Creek area (MINFILE 092HNW004, 005, 015-017) to the north.
Two 10-centimetre wide quartz veins cutting slate are reported to have been exposed at the Rush of the Bull occurrence. The veins and the adjacent slate are described as hosting abundant coarse- grained arsenopyrite and some free gold and were thought to be genetically associated with "acid, feldspar porphyry dikes and sills" occurring locally. Other, less mineralized veins were also noted in the area.
In 1973, maps prepared by Carolin Mines Ltd. (Assessment Report 19877, Figure 7) suggest the Rush of the Bull occurrence comprises four or five small trenches southeast of the McMaster zone (MINFILE 092HNW018); however, descriptions of the mineralization they expose are not available.
In 1973, Carolin Mines completed a program of soil sampling, a 37.0 line-kilometre ground magnetic survey and trenching on the area. In 2012, New Carolin Gold completed airborne magnetic and radiometric surveys, totalling 759 line-kilometres, on the area. The area has been historically explored in conjunction with the nearby Ladner Creek (MINFILE 092HNW007) mine and, more recently, the McMaster (MINFILE 092HNW018) occurrence.