Rokmaster Increases Revel Ridge Mineral Resource Estimate to: 1,526,000 Measured and Indicated ("M&I") Gold Equivalent ("AuEq") Ounces at 6.63 g/t AuEq and 1,486,800 Inferred ("Inf") Ounces at 6.11 g/t AuEq.
Rokmaster Increases Revel Ridge Mineral
Resource Estimate to: 1,526,000 Measured
and Indicated ("M&I") Gold Equivalent
("AuEq") Ounces at 6.63 g/t AuEq and
1,486,800 Inferred ("Inf") Ounces at 6.11 g/t
AuEq.
VANCOUVER, BC
,
June 13, 2023
/CNW/ - Rokmaster Resources Corp. (TSXV: RKR) (OTCQB:
RKMSF) (FSE: 1RR1) ("Rokmaster" or the "Company") is pleased to announce an updated Mineral
Resource Estimate ("2023 MRE") for the Revel Ridge Project ("Revel Ridge" or the "Project"),
located 42 km by road north of
Revelstoke, B.C.
Revel Ridge is currently known to host five mineralized zones, four of which are related to and in
close proximity to the Main Deformation Zone ("MDZ"). Mineralization associated with the MDZ is
classified as a polymetallic orogenic gold deposit, and is one of the largest undeveloped deposits of
this type in
Western Canada
.
The fifth mineralized zone, the Revel Ridge Yellowjacket Zone, is composed of high-grade silver-
zinc-lead carbonate replacement deposits that occur 50 to
75 m
into the hanging wall of the MDZ
and are amenable to underground access.
2023 Mineral Resource Estimate Highlights
M&I Mineral Resource, in all zones, is estimated to contain
1.53 million
AuEq
5
ounces
within
7.16 million tonnes with an average grade of
6.63 g/t AuEq.
Inf. Mineral Resource, in all zones, is estimated to contain
1.49 million AuEq ounces
within
7.56 million tonnes at an average grade of
6.11 g/t AuEq
. (
See Tables
1 and 2).
Table 1: Revel Ridge Total Measured and Indicated and Inferred Underground Mineral Resources
1-6
Tonnes
AuEq
AuEq
AgEq
AgEq
Au
Ag
Pb
Zn
g/t
ounces
g/t
ounces
g/t
g/t
%
%
Measured & Indicated
7,156,200
6.63
1,526,000
691.9
159,198,900
4.14
51.2
1.96
4.19
Inferred
7,563,900
6.11
1,486,800
621.7
151,188,800
4.42
46.9
1.48
2.62
See footnote to Table 2.
John Mirko
, President & CEO of Rokmaster stated,
"With the 2023 MRE now complete, we have
surpassed our goal of total Mineral Resources for this phase making the Revel Ridge Project one
of the most significant gold dominant polymetallic deposits worldwide. The results of the 2023
MRE show that Revel Ridge is a remarkable project, one that has strong potential for expansion on
the known zones and also for the discovery of new mineralized zones with additional exploration."
Rokmaster's exploration efforts have consistently added gold equivalent ounces to the previous
Mineral Resource Estimates. Between
September 2020
and
October 2022
, Rokmaster successfully
completed 120 drillholes for a total of
38,540 m
using a single drill rig. Rokmaster anticipates that
the trend of increasing the Project's Mineral Resources will continue with subsequent exploration.
The Project benefits from excellent on-site infrastructure and relatively close access to regional
infrastructure which allows for highly efficient exploration and potential development.
The consistency and strength of the mineralized zones on Revel Ridge is well demonstrated by
examining the total amount of drilling completed on the Project from the first drillhole in 1983 to
2022. The amount of drilling by all operators on the Project totals 79,425 metres, which is generally
much lower than many other deposits of this classification and scale. To illustrate the efficiency of
drilling, each metre that has been cored on the Project represents an average of approximately
19.2
M
&I AuEq ounces plus 18.7 Inf. AuEq ounces within the 2023 MRE*. More drilling, especially in the
deeper portions of the MDZ where coarse visible gold mineralization has recently been discovered,
offers a significant opportunity to further grow the Project's Mineral Resources which remain open in
all directions.
(*Historical rate of AuEq ounces per metre drilled provides no assurance that this rate will continue in the future. Note that underground chip samples also contribute to the 2023
MRE).
The 2023 MRE and Revel Ridge are the subject of ongoing detailed metallurgical, engineering,
environmental, and economic evaluations managed by Ausenco Pty. Ltd. The new engineering
studies will incorporate this expanded MRE as well as the significantly improved gold recoveries in
the Revel Ridge Main Zone (see news release dated
June 1, 2022
) which will differentiate it from
the robust preliminary economic assessment that was completed in
December 2020
.
Rokmaster has currently defined the strike length of the MDZ to be a minimum of 5.7 km through
geological mapping, drilling and geochemistry (
Figure 1
and
Figure 3
). The strike length of the
mineralized volumes in the 2023 MRE is approximately 2.0 km, therefore roughly one third of the
known extent of the MDZ has been the subject of denser drill testing forming the 2023 MRE. As an
orogenic gold deposit, the MDZ has good potential to remain persistent at depths similar to, and
even deeper than, where Rokmaster has completed drillholes below the 830 Level. Rokmaster plans
to identify and test structural and lithological favourable sites for enhanced mineralization at deeper
levels along the MDZ in the future. This strategy was successful in 2022 where the northwestern
extension drilling found a favourable lithology contact for the MDZ to host significant sulphide
mineralization (see news release dated
November 28, 2022
). On the basis of the extended strike
length of the MDZ as well as the overall consistency of mineralization, the long-term exploration
target potential for the Project is in the range of 18 to 25 million tonnes at similar average grades**
as what is determined in the 2023 MRE.
(**The exploration target potential quantity and grade is conceptual in nature, that there has been insufficient exploration to define a mineral resource and that it is uncertain if further
exploration will result in the exploration target being delineated as a Mineral Resource)
Revel Ridge Mineralized Domains
Gold mineralization at Revel Ridge is associated with planar deformation zones that cut an isoclinally
folded sequence of Cambrian to Late Proterozoic fine-grained clastic sedimentary and carbonate
rocks forming the western margin of the Kootenay Arc. Much of the mineralization at Revel Ridge
has strong affinities to a class of gold deposits known as orogenic gold deposits. This deposit type
forms within dilatant intervals in laterally persistent brittle-ductile deformation zones, which may be
mineralized over kilometre-scale vertical distances. At Revel Ridge, the Revel Ridge Main Zone
("RRMZ"), Revel Ridge Footwall Zone ("RRFZ"), Revel Ridge Hanging Wall Zone ("RRHZ") and
Revel Ridge Main Zone Extension ("RRMEX") all have characteristics common to orogenic gold
deposits while the Revel Ridge Yellowjacket Zone ("RRYZ"), has differing metallurgical
characteristics, alteration styles and a unique mineralogy which is more characteristic of a silver-rich
carbonate-hosted replacement deposit.
Table 2: Revel Ridge Detailed Measured, Indicated and Inferred Mineral Resources
1-6
Total for all Zones (RRMZ, RRFZ, RRYZ, RRHZ, RRMEX)
Cut-Off
Tonnes
Au
Au
Ag
Ag
Pb
Zn
Avg. NSR
AuEq
AuEq
AgEq
AgEq
NSR C$/t
k
g/t
k ounces
g/t
k ounces
%
%
C$/t
g/t
k ounces
g/t
k ounces
Measured
110
1,916.5
5.49
338.5
58.6
3,611.6
2.05
4.01
544.46
7.88
485.6
799.0
49,231.4
Indicated
110
5,239.7
3.64
613.9
48.5
8,168.8
1.93
4.25
409.01
6.18
1,040.4
652.8
109,967.5
Measured & Indicated
110
7,156.2
4.14
952.4
51.2
11,780.4
1.96
4.19
445.28
6.63
1,526.0
691.9
159,198.9
Inferred
110
7,563.9
4.42
1,075.1
46.9
11,414.3
1.48
2.62
417.53
6.11
1,486.8
621.7
151,188.8
Total for Revel Ridge Main Zone (RRMZ)
Measured
110
1,550.1
5.89
293.6
63.6
3,171.4
2.25
4.25
585.42
8.46
421.5
857.4
42,730.1
Indicated
110
2,922.4
4.97
466.6
49.6
4,662.5
2.02
3.60
491.00
7.13
669.8
722.7
67,902.9
Measured & Indicated
110
4,472.5
5.29
760.2
54.5
7,833.9
2.10
3.83
523.72
7.59
1,091.3
769.4
110,633.0
Inferred
110
5,689.1
4.94
903.3
49.1
8,975.5
1.66
2.93
466.75
6.79
1,241.6
688.1
125,859.5
Total for Revel Ridge Footwall Zone (RRFZ)
Measured
110
196.1
5.08
32.0
33.8
212.8
0.95
1.78
427.01
6.23
39.3
631.4
3,980.8
Indicated
110
846.5
4.01
109.1
28.8
785.0
0.74
1.11
328.53
4.84
131.8
491.0
13,362.9
Measured & Indicated
110
1,042.6
4.21
141.1
29.8
997.8
0.78
1.24
347.05
5.10
171.1
517.4
17,343.7
Inferred
110
704.7
3.96
89.7
21.5
488.2
0.53
1.00
313.43
4.63
104.9
469.5
10,637.3
Total for Revel Ridge Hangingwall Zone (RRHZ)
Measured
110
169.7
2.35
12.8
41.5
226.6
1.53
4.37
307.37
4.55
24.8
460.9
2,514.7
Indicated
110
583.5
1.88
35.3
49.4
927.1
2.09
4.69
296.84
4.40
82.6
445.9
8,365.1
Measured & Indicated
110
753.2
1.99
48.1
47.6
1,153.7
1.96
4.62
299.21
4.44
107.4
449.3
10,879.8
Inferred
110
575.1
1.67
30.9
44.8
827.6
1.51
3.10
232.23
3.49
64.6
353.7
6,539.9
Total for Revel Ridge Yellowjacket Zones (RRYZ)
Measured
110
0.5
0.11
0.0
48.0
0.8
1.89
3.99
122.36
2.79
-
363.1
5.8
Indicated
110
887.4
0.10
2.9
62.9
1,794.1
2.65
9.08
289.50
5.47
156.2
712.8
20,336.6
Measured & Indicated
110
887.9
0.10
2.9
62.9
1,794.9
2.65
9.08
289.41
5.47
156.2
712.6
20,342.4
Inferred
110
132.6
0.04
0.2
126.3
538.8
2.43
4.96
198.20
4.03
17.2
521.5
2,223.3
Total for Revel Ridge Main Zone Extention (RRMEX)
Inferred
110
462.4
3.44
51.1
39.3
584.1
0.36
0.04
263.83
3.94
58.5
398.8
5,928.8
Footnote 1-6
(1) Mineral Resources are not Mineral Reserves and do not have demonstrated economic viability. The estimate of Mineral Resources may be materially affected by
environmental, permitting, legal, title, taxation, socio-political, marketing, or other relevant issues.
(2) The Inferred Mineral Resource in this estimate has a lower level of confidence than that applied to an Indicated Mineral Resource and must not be converted to a Mineral
Reserve. It is reasonably expected that the majority of the Inferred Mineral Resource could be upgraded to an Indicated Mineral Resource with continued exploration, however
there is no certainty an upgrade to the Inferred Mineral Resource would occur or what proportion would be upgraded to an Indicated Mineral Resource.
(3) The Mineral Resources in this estimate were calculated using the Canadian Institute of Mining, Metallurgy and Petroleum ("CIM") Standards on Mineral Resources and
Reserves, Definitions and Guidelines (2014) prepared by the CIM Standing Committee on Reserve Definitions and adopted by CIM Council and CIM Best Practices Guidelines
(2019).
(4) The following parameters were used to derive the NSR block model C$/tonne cut-off values used to define the Mineral Resource:
- March 2023 Consensus Economics long term forecast metal prices of Au US$1,750/oz, Ag US$22/oz, Pb US$0.95/lb, Zn US$1.26/lb
- Exchange rate of US$0.74 = CAD $1.00
- Main Zone process recoveries of Au 96%, Ag 85%, Pb 71%, Zn 70%
- Yellowjacket Zone process recoveries of Au 86%, Ag 94%, Pb 88%, Zn 93%
(5) MDZ AuEq = Au g/t + (Ag g/t x 0.010) + (Pb% x 0.265) + (Zn% x 0.314); MDZ AgEq = Ag g/t + (Au g/t x 101.478) + (Pb% x 26.933) + (Zn% x 31.847); RRYZ AuEq = (Ag g/t x
0.008) + (Pb% x 0.310) + (Zn% x 0.457); RRYZ AgEq = Ag g/t + (Pb% x 40.588) + (Zn% x 59.737)
(6) Troy ounces ("ounces"), grams per tonne ("g/t"), metric tonne ("t") Net Smelter Return ("NSR"), Canadian Dollar ("C$"), 1,000 ("k").
Figure 2
shows the wireframe volumes of the five mineralized domains. Characteristics of the
relevant mineralized domains include:
Revel
Ridge Main Zone
(RRMZ).
The RRMZ is the single largest Mineral Resource domain in
the 2023 MRE. The RRMZ is hosted within the MDZ, a highly planar, 55-60° northeast-dipping
ductile deformation zone, with an average width of mineralization of
2.5 m
. The Measured and
Indicated classification of the RRMZ is estimated to contain 1.09 million AuEq ounces in 4.47
million tonnes grading 7.59 g/t AuEq. The Inferred classification is estimated to contain 1.24
million AuEq ounces in 5.69 million tonnes grading 6.79 g/t AuEq. Rokmaster's expanded
surface and subsurface drill programs have significantly expanded the RRMZ at depth, where it
remains open.
Revel Ridge Footwall Zone (RRFZ).
The RRFZ is the second largest Mineral Resource domain
within the 2023 MRE. The RRFZ zone sub-parallels the RRMZ, but is commonly located
between 10 and
30 m
into the footwall of the RRMZ. The RRFZ exhibits the same high strain
characteristics and similar alteration styles to the RRMZ. The RRFZ may be unique, as the
identification of visible gold is more common in this zone, particularly at deeper intervals of the
RRFZ. Within the RRFZ, visible gold has been identified within sheeted quartz-ankerite veinlets
that may be associated with minor red-brown sphalerite, galena and locally very minor
arsenopyrite. In the Measured and Indicated classification, the RRFZ is estimated to contain
171,100 AuEq ounces grading 5.10 g/t AuEq in 1.04 million tonnes. In the Inferred classification,
the RRFZ is estimated to contain 104,900 AuEq ounces grading 4.63 g/t AuEq in 704,700
tonnes.
Revel Ridge Hanging Wall Zone (RRHZ).
The RRHZ is best developed in the north-central
portions of the deposit area. The RRHZ is a mineralized deformation zone that occurs sub-
parallel, and a few metres to a few tens of metres into the hanging wall of the RRMZ. It has
similar macroscale characteristics - i.e. the development of strain related fine-grained sericite,
mm- to cm-scale quartz shear bands and sheeted shear foliation parallel high sulphide veins and
veinlets. In the Measured and Indicated classification, the RRHZ is estimated to contain 107,400
AuEq ounces grading 4.44 g/t AuEq in 753,200 tonnes, and in the Inferred classification, it is
estimated to contain 64,600 AuEq ounces grading 3.49 g/t AuEq in 575,100 tonnes.
Revel Ridge Yellowjacket Zone (RRYZ).
Of the five mineralized domains which make up the
2023 MRE, the RRYZ differs from all other mineralized domains. The RRYZ is a high silver,
zinc-lead carbonate replacement deposit hosted within siliceous limestone units and occurs 50
m to
75 m
into the hanging wall of the RRMZ. The RRYZ is currently considered to be best
developed near the north-central deposit area. The down-dip extent of mineralization within the
RRYZ is currently interpreted to be less than the down-dip extent of mineralization in the RRMZ.
The reduced down-dip extension of mineralization in the RRYZ is a function of the role of
anticlinal fold hinges in the development of this zone. RRYZ thickens near the anticlinal crests of
deformed carbonate rocks and decreases along the limb position of these same rock units. The
Measured and Indicated classification of the RRYZ is estimated to contain 20.34 million AgEq
ounces in 887,900 tonnes grading 712.6 g/t AgEq. In the Inferred classification, it is estimated
to contain 2.22 million AgEq ounces in 132,600 tonnes grading 521.5 g/t AgEq.
Revel Ridge Main Zone Extension (RRMEX).
The RRMEX is the northwestern strike
continuation of MDZ and applies to any intersection northwest of DDH RR21-58. This zone is
known to extend for at least
1,800 m
northwest of the
830 m
portal. In the Inferred
classification, RRMEX is estimated to contain 58,500 AuEq ounces in 462,400 tonnes grading
3.94 g/t AuEq.
2023 MRE Parameters
The database on which the updated 2023 MRE is based includes data from 432 surface and
underground drill holes totalling
79,425 m
of diamond drill core. The 2023 MRE also includes
analytical results from 223 underground chip samples. Surface trench results have been used to
constrain the Main Zone outcrop. Both drill hole and underground chip sample data have been
composited over
0.5 m
intervals, and estimated using inverse distance cubed for gold and silver and
inverse distance squared for lead and zinc.
Figure 3
shows the 2023 MRE block model with each block color-coded to Measured, Indicated,
and Inferred categories. These data have been reviewed and validated, and the 2023 MRE
estimated by P&E Mining Consultants Inc. The effective date of this MRE is
June 6, 2023
. A
Technical Report will be filed on the Company's website and SEDAR within 45 days of this
disclosure.
The technical information in this news release has been prepared in accordance with Canadian
regulatory requirements as set out in National Instrument 43-101 and reviewed and approved by
Eric
Titley
, P.Geo., who is independent of Rokmaster and who acts as Rokmaster's Qualified Person.
Rokmaster's 2023 MRE, documented in this news release, has been reviewed and approved by
Fred Brown
(P.Geo.) and
Eugene Puritch
(P.Eng., FEC, CET) of P&E Mining Consultants, Inc. both
who are independent of Rokmaster.
All hyperlinked figures and images can be found online at:
rokmaster.com/projects/revel-ridge/maps-and-figures/
On Behalf of the Board of Directors of
Rokmaster Resources Corp.
John Mirko
,
President & Chief Executive Officer.
Neither TSX Venture Exchange nor its Regulation Services Provider (as that term in defined in the
policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this
press release.
About Rokmaster
Rokmaster's flagship Revel Ridge Project is host to a high-grade gold and polymetallic orogenic
sulphide deposit which has been the subject of a PEA Technical Report dated
December 8, 2020
,
and the current 2023 MRE. The ongoing 2023 drill program is designed to efficiently expand the
volume of the Revel Ridge Main Zone as defined by the updated Mineral Resource Estimate, which
currently remains open in all directions.
Rokmaster continues with the finalization of its spin-out plan for the Big Copper and Duncan Lake
Properties (together "the Properties) to 4Metals Exploration Ltd., a wholly owned subsidiary of
Rokmaster (see news release dated
January 26, 2022
). The spin-out will provide Rokmaster
shareholders the opportunity to realize the growth and potential associated with these Properties
and the recent resurgence in copper, zinc and silver prices in addition to the new incentives for the
exploration of critical metals in
Canada
. Rokmaster shareholders will receive a pro rata distribution
of the common shares of 4Metals Exploration Ltd. on the tentative transaction date.
Big Copper.
Rokmaster controls the Big Copper Property in the
Kimberley
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 4.5 km along strike and is exposed in a series of
adits and trenches over approximately
500 m
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
NW Montana
, e.g., the Troy Mine (a significant past
producer of copper and silver) and
Hecla's
Montanore pre-development project, with, 112 million
tonnes Inferred at 54.8 g/t Ag and 0.7% Cu. (
Hecla
, 2020 Annual Report, Pg. 119.
www.hecla-mining.com
).
7
(7) The Qualified Person has been unable to verify this information.
Duncan Lake Zinc.
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 Zn-Pb-Ag mineralization at Teck's recently producing Pend Oreille Mine as well as
past producers including the Blue Bell Mine, Reeves MacDonald Mine, Jersey Emerald and HB
mines. Mineralization at Duncan Lake forms in the crest and limbs of the regional scale Duncan Lake
anticline, where strong zinc-lead +/- silver mineralization has been traced by surface and
underground drilling for approximately
2,500 m
. At Duncan Lake, Rokmaster will be targeting > 30
Mt of >10% Zn+Pb+Ag. Historical background and a geological synthesis of the Duncan Lake
deposit is provided in a NI 43-101 report by
Lane, B., 2018: Technical Report on the Duncan Lake
Project.
CAUTIONARY NOTE REGARDING FORWARD LOOKING STATEMENTS: This news release may
contain forward-looking information within the meaning of applicable securities laws ("forward-
looking statements"). Forward-looking statements are statements that are not historical facts and
are generally, but not always, identified by the words "expects," "plans," "anticipates," "believes,"
"intends," "estimates," 'projects," "potential" and similar expressions, or that events or conditions
"will," "would," "may," "could" or "should" occur. These forward-looking statements are subject to a
variety of risks and uncertainties which could cause actual events or results to differ materially from
those reflected in the forward-looking statements, including, without limitation: risks related to
fluctuations in metal prices; uncertainties related to raising sufficient financing to fund the planned
work in a timely manner and on acceptable terms; changes in planned work resulting from weather,
logistical, technical or other factors; the possibility that results of work will not fulfill expectations and
realize the perceived potential of the Company's properties; risk of accidents, equipment
breakdowns and labour disputes or other unanticipated difficulties or interruptions; the possibility of
cost overruns or unanticipated expenses in the work program; the risk of environmental
contamination or damage resulting from Rokmaster's operations and other risks and uncertainties.
Any forward-looking statement speaks only as of the date it is made and, except as may be
required by applicable securities laws, the Company disclaims any intent or obligation to update any
forward-looking statement, whether as a result of new information, future vents or results or
otherwise.
Figure 1: Plan Map (CNW Group/Rokmaster Resources Corp.)
Figure 2: Oblique Section (CNW Group/Rokmaster Resources Corp.)
Figure 3: Long Section (CNW Group/Rokmaster Resources Corp.)
SOURCE
Rokmaster Resources Corp.
View original content to download multimedia:
http://www.newswire.ca/en/releases/archive/June2023/13/c3367.html
%SEDAR: 00031923E
For further information:
please contact: John Mirko, President & CEO of Rokmaster Resources
Corp., [email protected], Ph. +1(604) 290-4647 or by website: www.rokmaster.com; For
shareholder information please contact: Mike Kordysz, [email protected], Ph. +1(604)
319-3171
CO: Rokmaster Resources Corp.
CNW 04:00e 13-JUN-23