VANCOUVER, BC / ACCESSWIRE / June 24, 2020 / Roughrider Exploration Limited (TSXV:REL) ("Roughrider" or the " Company") is pleased to announce it has signed a Binding Letter of Intent ("LOI") with Mirva Properties Ltd ("Mirva") to option a 100% interest in its Empire Mine Property (the "Property") located on Northern Vancouver Island, B.C, approximately 28 kilometers ("km") southwest of Port McNeill, B.C. (see Figure 1).
Empire Mine Property Acquisition Highlights
The Property covers 22 mineral occurrences, including 3 past producing open pit and two underground past producing mines for magnetite, copper, gold, and silver.
Significant previous drill intercepts including 2006 drillhole MW06-17 which returned 6.51 g/t gold and 1.41% copper over 50.32 m ¹ (see Table 1).
Historical measured and indicated resource of 960,000 tonnes at 2.03 g/t gold, 5.64 g/t silver, 0.34% copper, 0.013% cobalt and 16.1% iron using a 0.50 g/t gold cut-off completed November 30, 2008 by Gary Giroux. The resource was noted as open to depth and no further work on the resource has been completed since 2008 ² ³.
The Property was recently expanded from 7,114 hectares ("ha") to over 15,000 ha by Roughrider staking.
6 km prospective strike length outlined by historical 2005-2008 geophysical work and drilling.
The Property has excellent infrastructure and access due to logging, limestone quarrying and power generation operations in the area as well as easy access to ports at both Port McNeil and Port Alice.
Roughrider's CEO, Adam Travis, comments: "Based on our technical review and my personal field examination earlier this month, I am excited about the opportunity of rapidly advancing the multiple new and historic prospects on this exceptional property. I would like to commend the team at Mirva led by Denis Pelletier for consolidating the area over the last five years as well as continuing to acquire and compile the extensive historical data.
Our preliminary review of this historical data already shows significant gold and copper with interesting cobalt and silver drill intercepts, a good initial resource calculation in 2008 with the resource open to depth, as well as numerous geological, geochemical and geophysical targets along a 6 km prospective trend along with many other mineral occurrences throughout the property worthy of aggressive follow up. Soon after identifying the potential of the district we proceeded quickly with an LOI, doubled the size of the Property and will continue the detailed compilation and acquisition of historical data of this very exciting area and quickly move onto fieldwork and permitting."
New Staking
The original Property was comprised of 25 mineral claims totaling 7,114 ha which principally overlap 57 crown grants totaling 838.7 ha. Roughrider significantly increased the Property by more than 7,800 ha to cover prospective trends thus bringing the total Property area to approximately 15,000 ha covering an area approximately 11 km wide by 22 km long (See Figure 1).
Property History (see Cautionary Notes 1-3)
Occurrences of copper were first reported to have been discovered in 1897 along the Old Sport horizon near the Benson River on the east slope of Merry Widow Mountain. Previous mining and exploration has been mainly focused on two areas at either the base of the Quatsino limestone (Old Sport Horizon) or the near the top of the Quatsino limestone near its contacts with the Merry Widow intrusion (Empire Mine) ( see Figure 2).
Old Sport Horizon (Old Sport or Coast Copper and Benson Lake Underground Mines)
Near the Benson River, Cominco mined 2.6 mt of material between 1962-1972 from the Old Sport or Coast Copper Mine (a portion of this mine not on the current Property) and the Benson Lake Mine which produced 90,184,161 lbs. of copper, 377,165 oz of silver and 126,386 oz of gold. Material grades averaged 1.57% copper, 4.48 g/t silver and 1.48 g/t gold. These mines were exploiting the stratigraphically controlled Old Sport Horizon, characterized by magnetite and chalcopyrite bodies in widths varying from 0.6 to 30 metres ("m") associated with a dioritic sill near the base of the Quatsino Limestone Formation (see Figures 1 & 2). The mine closed in 1972 after the introduction of stiff mining royalties.
Later exploration including detailed airborne geophysics surveys by Grand Portage Resources in 2007 indicates that the Old Sport Trend continues for at total length of 6 km and up to 3 km south of historical workings. Grand Portage drilled 7 drillholes totaling 3,870m testing this horizon of which 5 holes reached the targeted depth. Drillhole MW07-54 was collared 900m south of the Benson Lake mine workings along a prominent magnetic high and it intersected 0.63m of 1.20 g/t gold, 31.00 g/t silver, 5.25% copper and 11.30% iron at a depth of 711m below surface. Although this previous drill intercept is not considered economic it attests to the continuity of mineralization at significant distances outside of historical underground workings. Further exploration is clearly warranted on this large-scale target copper-gold horizon which occurs over a potential 6 km strike length and up to 700m down dip before it encounters the intrusive contact, especially since it appears to be less than half mined by previous workers.
Empire Mine (Merry Widow, Kingfisher and Raven Open Pits and Kingfisher Adit) Area
Located approximately 1 km west and 700m in elevation above the Old Sport Horizon the Empire Mine extracted 3.37 mt of magnetite material from the Merry Widow, Kingfisher, and Raven magnetite material bodies between 1957-1967. Mineralization is localized near the top of the Quatsino limestone formation near its contact with the Merry Widow Intrusion. It is important to note that the focus at the time was on producing a magnetite material concentrate and even though chalcopyrite (copper) and pyrite (iron sulphide) lenses and zones were encountered they were considered a detriment to producing a clean magnetite concentrate and were purposely avoided. One small pit (Raven) was reportedly abandoned and later backfilled with waste due to the presence of abundant pyrite and chalcopyrite contaminating the magnetite material. Later studies have shown an intimate association of gold with late phase chalcopyrite, and preliminary metallurgical studies indicate favourable recoveries for gold, copper and silver.
After 1967 no substantial work appears to have been undertaken in the area until 1989 when Taywin Resources acquired the Quatsino crown grants and completed exploration of the Merry Widow pit area including the drilling of 42 diamond drillholes (2,850m), 120 poorly documented short reverse circulation drillholes and the completion of a pre-feasibility study with the goal to process material at BHP-Utah's Island Copper Mine near Port Hardy. By 1993 Taywin changed focus with new leadership and moved its corporate office to Ontario.
In 2004 Grand Portage optioned the Crown Grants and started acquiring claims throughout the area. Between 2005 and 2008 Grand Portage completed extensive exploration programs including two airborne AeroTem II Electro-Magnetic ("EM") and magnetometer geophysical surveys totaling 3,219 line km, a 8.5 line km IP survey over the Benson Lake Mine, a ground magnetic and Max-Min horizontal loop EM survey in the vicinity of the Merry Widow pit, the collection of 790 silt samples, 466 soil samples and 31 rock samples, and the completion of 92 diamond drillholes (12,450m). Most of their drilling was completed within and north of the Merry Widow pit, largely following up Taywin's 1989 drilling.
Significant intervals of gold, silver, copper, and cobalt were intersected by the drilling directed north of the Merry Widow pit. Two examples of the Merry Widow Pit drilling include:
Table 1: Selected Historical Merry Widow Drilling ¹
DDH ID
From (m)
To (m)
Length*
Au (g/t)
Ag (g/t)
Cu (%)
Co (%)
Fe (%)
MW06-08
1.53
75.00
73.47
4.51
6.05
0.31
0.019
15.49
(including)
6.32
47.85
41.53
7.59
8.65
0.42
0.024
19.29
10.42
11.67
1.25
12.20
12.00
0.39
0.014
35.90
11.67
12.92
1.25
12.50
14.00
0.69
0.024
35.00
24.17
25.32
1.15
79.40
25.00
0.46
0.097
18.70
37.47
38.59
1.12
16.30
29.00
1.73
0.011
18.25
44.53
45.69
1.16
54.30
27.00
0.87
0.156
21.90
46.85
47.85
1.00
18.85
18.00
1.04
0.019
27.20
MW06-17
20.22
70.44
50.32
6.51
21.98
1.41
0.059
18.16
(including)
23.00
24.00
1.00
21.90
77.00
4.83
0.082
34.80
52.52
53.62
1.10
33.70
45.00
2.57
0.069
22.60
53.62
54.48
0.86
47.90
93.00
4.50
0.049
31.20
55.00
56.00
1.00
25.50
81.00
4.20
0.699
25.10
*The intervals reported in this table represent drill intercepts and insufficient data is available at this time to state the true thickness of the mineralized intervals
In 2008 Grand Portage completed an update to their resource estimate and calculated a measured and indicated resource of 960,000 tonnes at 2.03 g/t gold, 5.64 g/t silver, 0.34 % copper, 0.013% cobalt and 16.1% iron using a 0.50 g/t gold cut-off. This resource was noted to be open to depth where further drilling was recommended, no additional work on the resource has been completed since the 2008 resource estimate ² ³.
Roughrider considers this historical estimate reliable as well as relevant as it represents key targets for future exploration work. A Qualified Person has reviewed the data presented in this news release and the previous 43 101 Reports and Assessment Reports however has not done sufficient work to verify the data or classify the historical estimate as a current mineral resource as such Roughrider is not treating this historical estimate as a current mineral resource. The historical resource was based on a database comprised of gold, silver, copper, iron and cobalt assays from 2,290 core samples and 274 specific gravity measurements from 43 down-hole survey-controlled core drill hole (Giroux, 2008)2. Confirmation drilling and detailed data verification work will be required to confirm the historical drill data prior to updating the resource estimate.
In 2007 Grand Portage tested targets outside of the Merry Widow pit area which included 23 drillholes at the Marten Zone, 5 drillholes at the South Pit Showing and 2 drillholes at the Snowline showing. The Marten Zone drilling included intercepts such as drillhole MW07-72 which returned 5.82 g/t gold and 0.405% cobalt over 8.16m from 5.18-13.34m. All 5 drillholes at South Pit failed to reach the target zone and only two of these drillholes even cored bedrock leaving this target untested. Two holes drilled at the Snowline showing failed to intersect significant results.
These significant previous exploration results and previous mining along a favourable 6 km long airborne magnetic and geological trend with at least 22 documented mineral occurrences attest to the exploration potential of the area for copper-gold skarn deposits with interesting silver, cobalt and magnetite credits.
Letter of Intent Overview
Roughrider entered into a LOI with Mirva on June 21, 2020. It is expected that the Companies will sign a Definitive Agreement within two months of signing the LOI (subject to TSX Venture Exchange approval). Consideration for the Transaction includes Initial payments on closing of $50,000 and 200,000 common shares of the Company and a minimum work commitment in year one of $200,000. Total consideration over 5 years includes an aggregate $1,250,000 cash payments, the issuance of 3,000,000 common shares and work commitments of $2,000,000 for a 100% interest in the Property. Mirva will retain a 2% NSR on the Property of which 1% may be purchased for $1,000,000.
Qualified Person
The scientific and technical information contained in this news release has been prepared, reviewed and approved by David Tupper, P.Geo. (British Columbia), Roughrider VP Exploration and a Qualified Person within the context of Canadian Securities Administrators' National Instrument 43-101; Standards of Disclosure for Mineral Projects.
About Roughrider Exploration Limited
Roughrider's current focus is the exploration of its 100% owned Eldorado, Gin and Bonanza Properties located in the Golden Triangle of northern British Columbia, adjacent to the Red Chris Mine (owned and operated by Newcrest Mining and Imperial Metals). Additionally, Roughrider will be reviewing strategic precious metal opportunities in western North America. Roughrider also holds a 100% ownership in the Sterling Property located in central BC.
On Behalf of the Board of Directors:
"Adam Travis"
Adam Travis, Chief Executive Officer and Director
For further information, please contact:
Roughrider Exploration Limited
Adam Travis, CEO
625 Howe Street, Suite 420
Vancouver, B.C. V6C 2T6, Canada
P: 250-878-7554
E: adam@roughriderexploration.com
NR20-06
Cautionary notes related to news release and/or maps
This news release and maps contain information about adjacent properties on which Roughrider has no right to explore or mine. Readers are cautioned that mineral deposits on adjacent properties are not indicative of mineral deposits on the Company's properties.
1 British Columbia Mining Assessment Report 37471 "2017 Prepatory/Physical Report for the Blue Gold Project, Bridgeland Mineral Partnership, January 15, 2019", Assessment Report 28863 "Assessment Report on the Diamond Drilling on The Merry Widow Property, Grand Portage Resources, December 15, 2006" , Assessment Report 30002 "Diamond Drilling, Geochemical and Geophysical Assessment Report for the 2007 Program at the Merry Widow Project, Grand Portage Resources, April 14, 2008", Assessment Report 38855 "Assessment Report Merry Widow Property, Denis Pelletier, January 10, 2020". Grand Portage News Release dated September 12, 2006 and October 14, 2006.
2 NI43-1010 Technical Report: Giroux, G. H., & Raven, W. (November 30, 2008). Technical Report on the Copper Gold Resources for the Merry Widow Property. Filed on Sedar January 22, 2009. The 2008 Grand Portage resource estimate was completed by Gary H. Giroux, P.Eng, MASc, of Giroux Consulting Ltd. in Vancouver, B.C. The estimate was based on a 3D geologic model integrating 4,448 metres of diamond drilling of 43 drill holes, 2,290 assays, with 104 down hole surveys collected between June and December 2006. The resource was reported utilizing gold cut-off grades ranging from 0.10 g/t to 3.00 g/t gold, as more particularly set out in the report. A complete copy of the report is available on Grand Portage's public filings on SEDAR (www.sedar.com). A gold cut-off grade of 0.50 g/t gold was selected as representing one possible mining scenario. For the purposes of the calculations, lognormal cumulative frequency plots were used to assess grade distribution to see if capping of high values was required and if so at what levels. For all elements capping levels were established based on the individual grade distributions as follows: Gold- a total of 18 gold assays were capped at 32.0 g/t gold, Silver- a total of 9 silver assays were capped at 165 g/t silver, Copper- a total of 7 assays were capped at 11.7% copper, Cobalt – a total of 5 assays were capped at 0.48 % cobalt, Iron- all iron assays were capped at 50% iron ( the analytical detection limit).
3 Historical information provided in this release and/or accompanied maps regarding the Company's project or adjacent properties cannot be relied upon as the Company's QP as defined under NI-43-101 has not prepared nor verified the historical information. A Qualified Person has not done sufficient work to classify the historical estimate as a current mineral resource and Roughrider is not treating this historical estimate as current mineral resources.
Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.
CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION
Certain information contained or incorporated by reference in this press release, including any information regarding the proposed Transaction, private placement, board and management changes, as to our strategy, projects, plans or future financial or operating performance, constitutes "forward-looking statements." All statements, other than statements of historical fact, are to be considered forward-looking statements. Forward-looking statements are necessarily based on a number of estimates and assumptions that, while considered reasonable by Roughrider, are inherently subject to significant business, economic, geological and competitive uncertainties and contingencies. Although Roughrider believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements are not guarantees of future performance. Known and unknown factors could cause actual results to differ materially from those projected in the forward-looking statements. Such factors include but are not limited to: fluctuations in market prices, exploration and exploitation successes, continued availability of capital and financing, changes in national and local government legislation, taxation, controls, regulations, expropriation or nationalization of property and general political, economic, market or business conditions. Many of these uncertainties and contingencies can affect our actual results and could cause actual results to differ materially from those expressed or implied in any forward-looking statements made by, or on behalf of, us. Readers are cautioned that forward-looking statements are not guarantees of future performance and, therefore, readers are advised to rely on their own evaluation of such uncertainties. All of the forward-looking statements made in this press release, or incorporated by reference, are qualified by these cautionary statements. We do not assume any obligation to update any forward-looking statements.
Figure 1.
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Figure 2
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SOURCE: Roughrider Exploration Ltd.
ReleaseID: 595026
