Mr. John Mirko reports
ROKMASTER ANNOUNCES RESUMPTION OF 2022 DRILLING AND FINAL RESULTS FROM ITS 2021/2022 METALLURGICAL DRILLING PROGRAM AT REVEL RIDGE
Rokmaster Resources Corp. has released the results of the final four drill holes of 2,975 metres of metallurgical drilling at the Revel Ridge project, located 35 kilometres northeast of Revelstoke, B.C. Revel Ridge hosts a gold-rich, polymetallic orogenic gold deposit and is one of the largest undeveloped deposits of this type in the Western Cordillera.
The company also reports the initiation of the 2022 exploration drill program.
2022 metallurgical drill program
As was previously outlined in Rokmaster's news release of Jan. 27, 2022, the continuing metallurgical drill program utilizes HQ core (6.35-centimetre diameter). The metallurgical drilling program is designed to obtain large volumes of mineralized drill core for metallurgical sample testing. The larger-diameter HQ core produces 62 per cent more volume of material per unit length than NQ core (4.76-centimetre diameter). In the current program, a second drill hole is wedged from the pilot hole, providing Rokmaster with a second mineralized rock volume, with significantly less drilling.
Out of 14 drill holes, seven holes were assayed, including RR21-80, RR21-81, RR21-82, RR21-84, RR22-85, RR22-86 and RR22-87. Drill holes that were twinned off the main pilot drill hole provided a second core sample a few metres distant from the pilot hole intersection, including diamond drill holes RR21-80A, RR21-81A, RR21-83, RR21-84A, RR21-85, RR22-86A and RR22-87A. Except for a deep footwall zone cored in RR21-85, none of the core from these drill holes was assayed. This protocol uses the assay results from the pilot hole to characterize probable assay results in the twinned drill hole. This protocol allows 100 per cent of the core in the twinned drill hole to be used for metallurgical purposes. This news release documents the assay results from diamond drill holes RR22-85A, RR22-86A and RR22-87A and the results of the deep footwall zone cored in diamond drill hole RR21-85. The results of diamond drill holes RR21-80, RR21-81, RR21-82 and RR21-84 are provided in Rokmaster's news release dated Jan. 27, 2022.
Rokmaster's 2021 and 2022 metallurgical drilling program cored 2,975.4 metres of HQ core in 14 drill holes. These drill holes obtained metallurgical samples from the Yellowjacket, Main, Hangingwall, Footwall and Deep Footwall mineralized zones. The samples will be used to test for variations in metallurgical characteristics of higher elevation levels (up to 890 metres) as well as lower elevations (down to 390 metres) within the Revel Ridge mineralized zones. The HQ drill holes in the current program will also obtain samples from over 700 metres of strike length of this impressive mineralized system.
Analytical results -- metallurgical drill holes:
The narrow intersection noted in diamond drill hole RR21-85 is located approximately 40 metres into the footwall of the RRMZ (Revel Ridge Main zone). This sulphide-rich zone is located within a metre-scale, sericite-altered phyllite horizon, entirely embayed within thick marbleized limestones of the Badshot formation. In many respects, the zone is similar to that noted at the A&E occurrences more than five kilometres to the northwest of the Revel Ridge deposits. This stratigraphic and structural position has never been drill tested.
- Virtually all of the drill holes intersect deposit average grades and widths that reinforce the trend of unusually high continuity of mineralization of the Revel Ridge mineralized system.
- These drill holes also suggest that gold-dominant footwall gold-mineralized zones may be increasing to the southeast, at depth, with strong polymetallic-hosted gold mineralization in the RRMZ remaining remarkably consistent throughout the 2.5-kilometre-long known strike length of the RRMZ.
Initiation of 2022 drill program
Rokmaster's technical team has located additional compelling exploration and development targets in close proximity to the large volume of gold equivalent mineralization documented in the updated National Instrument 43-101 resource released on Dec. 1, 2021, and filed on SEDAR. Highlights of this release are as follows:
- Measured and indicated (M&I) mineral resource, in all mineralized zones, includes 1.36 million gold equivalent ounces contained within 6.73 million tonnes with an average grade of 6.27 grams per tonne gold equivalent.
Inferred mineral resource, in all mineralized zones, includes 1.22 million gold equivalent ounces contained within six million tonnes at an average grade of 6.33 grams per tonne gold equivalent.
An average NSR (net smelter return) value of $357 per tonne is 225 per cent higher than the $110 cut-off.
Rokmaster has begun the necessary underground preparation to drill test additional large blocks of rock adjacent to the mineralized zones in the current NI 43-101 compliant resource. The known dimensions of the Revel Ridge Main zone deposit, which currently has a strike length exceeding 2.5 kilometres and a downdip extent exceeding 1.2 kilometres, have the potential to be significantly extended. It is important to note that virtually all historical drill holes end within the inferred resource boundary or the limits of the gold equivalent resource are controlled in large part simply by the presence or absence of drill holes.
Rokmaster's technical team has identified the presence of several lithological and structural parameters that are characteristically associated with thicker, higher-grade gold equivalent mineralized zones. These are well documented to southeast of the current inferred resource area and will be actively targeted by the first underground drilling of 2022.
Underground exploration drilling of these targets will be initiated shortly.
John Mirko, president and chief executive officer of Rokmaster, stated: "The successful conclusion of our metallurgical drill program and the start of our 2022 underground exploration program highlights several points:
- "All 14 metallurgical drill holes encountered significant mineralized zones meeting or exceeding deposit average grades and widths.
- "Rokmaster's metallurgical team now has the necessary representative mineralized drill holes to better define the metallurgical characteristics of the very large Revel Ridge deposit.
- "Macroscale gold has been encountered in several drill holes in the current metallurgical drill program. This preliminary data suggests that, not only is the continuity of polymetallic gold mineralization excellent, but the continuity of gold mineralization in sheeted veins developing in the Footwall zone (RRFZ) at Revel Ridge may be better than anticipated.
- "The preliminary test of deep footwall mineralization, the Revel Ridge Deep Footwall zone (RRDFZ), undertaken in DDH RR21-85, was remarkably successful. We have long known that multiple structural and lithologically controlled mineralized zones at Revel Ridge exist and may have the potential to materially add to the net resource. Although this first test of the RRDFZ has resulted in a narrow but high-grade gold equivalent intersection 40 to 45 metres deeper into the footwall of the RRMZ, this volume of rock has never been drill tested previously. This target will be actively pursued in the recently initiated underground exploration drill program.
- "Our technical teams have been able to integrate the results of the past two years work at Revel Ridge into an exploration drill program which will capitalize on our understanding of the key controls of thicker, higher-grade mineralization at Revel Ridge.
"Rokmaster's management is confident that the Revel Ridge deposit will continue to expand and is on track to exceed all of the thresholds required to become one of British Columbia's premier gold producers."
Quality assurance/quality control
Dr. Jim Oliver, PGeo, supervised all aspects of the drilling and sampling undertaken in the 2021 and 2022 underground and surface diamond drill program. All assay samples have been collected from one-half HQ core, sawn with a diamond saw with the sample intervals marked by technical personnel. A full QA/QC program using blanks, standards and duplicates was utilized to monitor analytical accuracy and precision. QA/QC samples are submitted approximately at every 20th sample, or a minimum of 5 per cent of the total sample stream. Appropriate standards are used to provide quality control information on high-grade and medium-to-low-grade samples. A limestone blank is inserted after any sample that has macroscale characteristics of higher-grade mineralization. Duplicate samples are repeat analyses of designated primary sample pulps. The samples were sealed on site and shipped to MSALABS in Langley, B.C. MSALABS is an ISO 17025 (Testing and Calibration Laboratory) and ISO 9001 (Quality Management System) certified laboratory. Drill core samples were crushed to two millimetres and a 500-gram subsample was pulverized, with 85 per cent of the sample passing 75 microns. The subsample was analyzed using a combination of MSALABS FAS211 for gold and ICP-240 (four-acid digestion) for silver, base metals and other trace elements. FAS211 for gold is an ore-grade fire assay of a 50-gram pulp with an AAS finish with a detection range between 0.01 part per million and 100 parts per million). ICP-240 utilizes four-acid digestion and provides ore-grade analytical data on silver, base metals and 26 other elements.
The technical information in this news release has been prepared in accordance with Canadian regulatory requirements as set out in NI 43-101 and reviewed and approved by Eric Titley, PGeo, who is independent of Rokmaster and who acts as Rokmaster's qualified person.
About Rokmaster Resources Corp.
Rokmaster controls a portfolio of three significant exploration and development projects, all of which are in Southern British Columbia in regions of excellent infrastructure. The three projects include:
- Revel Ridge: Rokmaster is currently conducting an underground drill program at the Revel Ridge project, located in southeastern British Columbia, 35 kilometres north of the city of Revelstoke. Revel Ridge is a high-grade gold and polymetallic orogenic sulphide deposit that has been the subject of a preliminary economic assessment technical report dated Dec. 8, 2020, and an updated MRE (mineral resource estimate) with an effective date of Nov. 15, 2021, both published on SEDAR.
Big Copper: Rokmaster controls the Big Copper property in the Creston area of Southern British Columbia. Big Copper is a high-grade copper-silver occurrence hosted in mid-Proterozoic rocks. Copper-silver mineralization has been traced for four kilometres along strike and is exposed in a series of adits and trenches over approximately 400 metres to 500 metres of vertical relief. Big Copper likely belongs to a class of stratabound replacement copper-silver deposits hosted within mid-Proterozoic quartzitic sediments. The style and stratigraphic setting of mineralization at Big Copper may be analogous to similar stratabound silver-copper deposits in northwestern Montana (for example: the Troy mine (64 million tonnes of 0.74 per cent copper and 54 grams per tonne silver (Western Mining History, 2020) or Hecla's Montanore mine, 112 million tonnes at 51.2 grams per tonne silver and 0.7 per cent copper (Hecla, 2020 annual report, page 119)).
Duncan: Duncan is a carbonate-hosted silver-lead-zinc deposit located near Duncan Lake in Southern British Columbia. The deposit is hosted within a Cambrian-age Badshot limestone, which also hosts silver-lead-zinc mineralization at Teck's currently producing Pend D'Oreille mine as well as past producers, including the Blue Bell, Reeves MacDonald, Jersey-Emerald and HB mines. Mineralization at Duncan Lake forms in the crest and limbs of the regional-scale Duncan Lake anticline, where strong lead-zinc-plus-or-minus-silver mineralization has been traced by surface and underground drilling for approximately 2,500 metres. At Duncan Lake, Rokmaster will be targeting greater than 30 million tonnes of greater than 10 per cent lead plus zinc plus silver. Historical background and a geological synthesis of the Duncan Lake deposit is provided in an NI 43-101 report by B. Lane, 2018 -- technical report on the Duncan Lake project.
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