Rokmaster Resources Update on Duncan Lake

Rokmaster Resources Corp. (TSX.V: RKR)

Provided an update on the 2021 exploration activities and expanded claim package at its advanced stage Zinc-Lead-Silver deposit at Duncan Lake and on newly acquired ground on the “President Silver Trend”, both in southeastern British Columbia.   […] 



Rokmaster Resources TSX.V: RKR
Stage Exploration
Metals Polymetallic
Market cap C$36m   @ 34c
location British Columbia, Canada



Rokmaster Resources Revel Ridge

Rokmaster Resources Revel Ridge project



Rokmaster Updates Its Advanced Stage Duncan Lake Zn-Pb-Ag Project


(Vancouver, Dec. 20, 2021 Rokmaster Resources Corp. (TSXV: RKR) (OTCQB: RKMSF) (FSE: 1RR1) (“Rokmaster” or the “Company”) is pleased to provide an update on the 2021 exploration activities and expanded claim package at its advanced stage Zinc-Lead-Silver deposit at Duncan Lake and on newly acquired ground on the “President Silver Trend”, both in southeastern British Columbia.


Regional Scale of Duncan Lake Zn-Pb Occurrences

Duncan Lake is one of a series of Zn-Pb-Ag carbonate hosted deposits which are associated with Cambrian age limestones forming the western boundary of a prolific metallogenic belt, the Kootenay Arc. Rokmaster’s Duncan Lake ~15 km long claim package host numerous Pb-Zn-Ag occurrences, including the Duncan No. 1 to 4 mineral occurrences and most significantly the northerly down plunge extensions of the No. 7 and 8 Zones of Teck Resources’ Duncan Mine Prospect.

All of these Pb-Zn-Ag occurrences follow the permissive Badshot limestone (Figure 1). The contact of the Badshot limestone may form mineralized domains, with hundreds of metres to kilometre-scale strike lengths, exemplified by the No.1 to No.8 occurrences. Prospecting samples, and the results of extensive soil geochemical surveys highlight the positions of strongest Zn-Pb-Ag mineralized zones within the project’s 10 km long Badshot trend.


The Duncan Mine Prospect

The adjacent Duncan Mine Prospect was the focus of an underground development program by Cominco in 1959-1960 followed by substantial underground and surface diamond drilling which continued through to 1997.

The Duncan Mine Prospect (Duncan No. 5 – 8 zones) contains a historical resource of 3.9 million tonnes grading 3.2% Zn and 3.1% Pb (Lane, 2018)23. Work undertaken by Cominco geologists (1989 to 1997) pursued the No. 7 and 8 mineralized zones onto what is now Rokmaster ground.

These drill holes were collared on very broad 300 – 350 m centres,Figure 2. The results of this program suggested that the grade of Zn-Pb-Ag mineralization increases to the northwest along the shallow plunge line of the Duncan anticline.

 Rokmaster’s Duncan Lake Zinc Project has:

  1.  Room to discover mineralization, at the kilometre scale, in the direction of increasing Ag-Zn-Pb trends.
  2.  Room to test the permissive anticlinal closure, on a kilometre scale on both the western and eastern limbs of the Duncan Anticline within the often-fertile Badshot limestone.


Rokmaster and Acquisition of the President Showing – President Silver Trend.

Rokmaster has recently acquired a 123-ha claim package which overlies the Two Brothers and President Crown grants. These claims provide an additional 1800 m of strike length on northwestern continuation of the Duncan Lake Zn-Pb-Ag trend.

The additional claims fall along the northwest side of Duncan Lake and are contiguous with Rokmaster’s adjacent Duncan claims.

At the President Silver Trend, a strong, deep yellow-orange gossanous alteration and deformation zone follows the northwest plunging trace of the Duncan Anticline. The occurrence was first tested by a series of three short adits, totalling 210 m where in 1893 the operators focus was on very high-grade silver-lead mineralized zones.

The occurrences are characterized by much higher silver grades, with 1980 trench samples cutting 531 g/t Ag over 1.0 m,Figure 4. The data suggests that the mineralogical zonation and increasing Ag-Pb-Zn tenor, first noted near the Duncan Mine, continues to the northwest across Duncan Lake. The occurrence was targeted in 1976 by a single BQ drillhole (44.7 m) which failed to intersect bedrock.


Northwest zonation in the direction of increasing silver is suggested by:

  1. Cominco’s drilling on the northwesterly continuation of the No. 8 zone at Duncan Lake, now on Rokmaster ground, where 74 drill hole samples contained greater than 0.5 g/t Ag, averaged 1.7 g/t Ag.
  2. Drilling by Cominco in 1997did not assay for silver. Resampling of 1997 core demonstrated that 5 of 21 samples returned silver grades >3.5 ppm Ag (Lane, 20184). Lane reported that “silver may be an important contributor to certain mineralized intervals”.
  3. On the President Silver Trend, on the northwest side of Duncan Lake, the data of MacGregor (1981)5 lists twenty rock samples taken from three trenches that carry an average silver grade of 42.1 g/t Ag. The progressive increase in silver content occurs over a strike length of 5.5 km, on ground that is largely controlled by Rokmaster


Rokmaster Resources management comments

“Rokmaster is in the enviable position of controlling a trinity of outstanding mineral occurrences including: 1) the Revel Ridge orogenic gold deposit; 2) Big Copper, a highly prospective sediment hosted copper-silver occurrence; and 3) Duncan Lake, an advanced stage carbonate hosted Zn-Pb-Ag deposit.


“Any of these could be company builders and each should contribute significantly to shareholder value and growth.


“Duncan Lake represents a strong link in the multi-commodity occurrence chain which Rokmaster has forged over several years of astute acquisition, exploration and project enhancement.


“Duncan Lake has been recognized for decades as being one of the premier undeveloped Zn-Pb-Ag deposits in the Kootenay Arc. With the acquisition of ground overlying the President Silver Trend, the full potential of the Duncan Lake deposits may yet be realized.


“Rokmaster holds a valid permit (MX-5-802) to undertake surface drilling on its Duncan Lake project and Rokmaster anticipates that that permit will be utilized at a time most advantageous to its shareholders.”

John Mirko, President and CEO of Rokmaster Resources


To read the full news release, please click HERE




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