VR acquired the Junction property in August 2017, dovetailing with the staking of the nearby Big Creek property to reinforce the Company’s evolving understanding of the region’s copper-gold mineral potential. The Company has expertise to leverage and synergies to exploit at Junction by applying its exploration experience gained during the past three years of exploration at its Bonita porphyry cu-au property.
The Junction property is little explored because of its location outside of Nevada’s well-established mineral deposit belts. VR will evaluate the gold- and silver-bearing copper sulfide mineralization evident at Junction for its potential as the surface expression of a mesothermal polymetallic vein system. The location within the Antelope Shear zone provides a crustal-scale anchor for a high temperature, copper-silver-gold metasomatic and/or magmatic-hydrothermal fluid system.
The Junction property is located in Humboldt County, near the Nevada – Oregon border, and immediately east of Nevada Highway 140. The nearby town of Denio Junction is less than 6 kilometres to the north, and facilitates effective and cost-efficient field exploration programs.
The Junction property is at the northernmost limit of the Pine Forest Range. It straddles the divide between the low-lying headwater regions of the northeasterly trending Antelope Valley and Quinn River Valley, which itself ultimately feeds to the southwest into the Blackrock Desert.
Topography at Junction is subdued. Desert valley floors give way to grassy rangelands on rounded and low-lying foothills of the low-elevation craggy ridgeline of Lone Mountain. There are no pine nor juniper at Junction. Climate is semi-arid to arid, with hot dry summers and cold dry winters.
Outcrop exposure is common on the property. Where outcrop is not exposed, colluvium is interpreted to be local in nature; there is no soil development at Junction, and the development of thick pediment fans is restricted to the eastern flank of the Lone Mountain ridge. Rounded knolls and low relief scarps have a regolith veneer typically less than 30 centimetres thick on top of weathered outcrop. Ridge slopes along Lone Mountain are craggy rubble crop and coarse colluvium. A veneer of tertiary-aged basalt covers the central part of the property.
The Junction property consists of 140 claims in one contiguous blocks covering 2,892 acres (1171 hectares) within an area of approximately 7.5 by 3 kilometres.
The property is on land administered by the federal Bureau of Land Management (BLM). There are no state or federal land use designations, or privately-owned land which restrict exploration on the property, nor is the property within the BLM’s broadly defined area of sage grouse protection.
The property is owned 100% by VR, registered to the Company’s wholly-owned, Nevada-registered US subsidiary Renntiger Resources USA Ltd. Fifteen claims in the western part of the property were acquired from a private company in August, 2017. Terms of the acquisition, including royalty, are outlined in a news release dated August 30, 2017, and available on this website. The additional 125 claims were staked independently and directly by VR. There are no carried or back-in interests on the property.
VR completed first pass geological mapping, prospecting, rock sampling and grid-based soil sampling in September, October and November 2017:
- 102 rock samples collected from on and around the property for geochemistry;
- 307 soil samples collected at 25 and 50 metre stations on 16 lines spaced 100 metres apart.
- 13 hand samples for physical property testing, including density, conductivity, resistivity and magnetic susceptibility, and;
- 4 hand samples for plain light and polished section mineral petrology
A high resolution airborne EM (electromagnetic) survey is anticipated for Q1 2018 to map sulfide minerals at depth along the 6 kilometre trend of mineral showings at surface. The survey will include magnetic, conductivity and resistivity products, and related 3-D inversion modeling, to optimize the sub-surface mapping of copper-silver sulfide zones at Junction.
Gold- and silver-bearing copper sulfide mineralization occurs at surface at the Junction property in two separate northeasterly-trending zones approximately 1.4 and three kilometres long, respectively. Sulfide zones are related to quartz-k-spar pegmatite dykes and local quartz veins within locally feldspar porphyroblastic, biotite-hornblende orthogneiss. Orthogneiss is the extension of the Antelope shear zone as shown on published maps of the Ashdown mine area located to the southwest of Junction; mapping by VR indicates the shear zone is regional in extent, with a strike length of 18-20 kilometres.
The style of mineralization at Junction is largely consistent amongst the various outcrops, workings (pits and trench cuts, local adits) and colluvium outcrop rubble along the length of the two zones. Centimetre- to decimetre- scale sulfide clots and veins occur primarily in quartz within and proximal to decimetre- to metre-scale pegmatite bodies. Quartz veins spatially associated with pegmatite are centimetre- to metre-scale, and hey are both concordant and discordant to pegmatite bodies. The pegmatite bodies are in turn both concordant and discordant within orthogniess; in places they are sheared by the regional fabric in the orthogneiss, and elsewhere they cross-cut orthogneiss and/or host orthogneiss xenoliths.
Sulfide assemblages are digenite-covellite-tenorite-argentite-chalcopyrite with secondary chrysocolla. Locally in the western part of the property there are quartz vein sets with metre-scale iron carbonite alteration envelopes within orthogneiss