The Blow-Down showing was first discovered in 1990 on the Axe property, held by Ascot Resources Ltd. As of 1991, the Axe property consisted of some 59 claims totalling 932 units. Work reported on the Axe claims in 1990 and 1991 (primarily rock, soil and silt sampling) was spread over several showings on these extensive holdings. Some induced polarization geophysical work was done on the showing in 1991.
The area has recently been mapped on a regional scale as Upper Triassic Stuhini Group intruded by dikes, sills and plutons of Early Jurassic age (Open File 1997-03). The Early Jurassic Groat stock is a faulted, northeast trending, coarse-grained porphyritic to fine-grained equigranular intrusion with granodiorite to quartz monzonite modal compositions. A Uranium-Lead age date of 205.1 plus/minus 8 Ma was determined by R.M. Friedman of the University of British Columbia (Fieldwork 1996, page 295).
An open 600 by 300 metre gold soil anomaly is located along a dioritic contact with siliceous cherty tuffs. Regional geology maps show this to be the northeast contact area of the Groat stock which extends several kilometres to the southwest. Several gossanous sheared subcrops of cherty tuff occur and contain elevated gold values up to 0.8 gram per tonne gold (Assessment Report 21858). This sample was at least 0.5 metre in width. The best overall gold value was obtained from a grab sample of quartz vein containing pyrite and chalcopyrite that yielded 1.78 grams per tonne gold (Assessment Report 21858, page 18).
In 2003, Canadian Gold Hunter Corp conducted a small program over the Blow-Down target situated along the southern margin of the Groat Stock in an area where faulting has pushed the eastern portion of the stock to the north. Past work in the area had identified several substantial copper and gold soil anomalies but failed to explain them. Thirty-eight soil samples were collected at 50-meter intervals along the base of the southeast facing cliffs in the Blow-Down target area. Eight rock samples were also collected. Mineralization was found to be restricted to narrow, widely spaced and erratic, discontinuous shears and quartz veins cutting very fresh diorite of the Groat Stock. The fact that most of these structures are sub-parallel to the hillside is thought to account for the apparent large size of the geochemical anomaly.
In 2016, Skeena Resources personnel spent six man-days evaluating and prospecting the Wolf (104G 045), Blowdown (104G 171) and Wolf West (104B 172) targets with two man-days spent on each. A total of 28 rock samples were collected from the targets. Sample descriptions with locations were recorded in Assessment Report 36505). Skeena reported that the target consisted consists of a northeast trending almost 800 metres long, copper-gold contour soil anomaly coincident with an over 2200 metres long, 400 metres wide chargeability anomaly. The Blow-Down anomaly also includes the Pup showing which is about half way between the Wolf and the Blow-Down targets and described in the Wolf MINFILE description. Skeena describes the "Blowdown" as being underlain by monzodiorite cut by a couple of widely spaced erratic zones (tens to hundreds of metres apart) with narrow (typically 15 to 30 centimetres), southerly trending, steep west dipping quartz ± carbonate veins, generally associated with shears containing sparse pyrite-limonite, minor chalcopyrite and trace sphalerite, galena and arsenopyrite with a peak value of 1.78 grams per tonne gold (Assessment Report 36505). Both the Pup and the Blowdown showings were thought to represent D veins, which occur above porphyry systems and commonly associated with faults. Drilling is anticipated by Skeena.
Refer to GJ prospect (104G 034) and Donnelly (104G 186) for common geological and property work history.
