TORONTO, Oct. 29, 2018 (GLOBE NEWSWIRE) -- Rupert Resources Ltd (“Rupert” or the “Company”) is pleased to provide an update on exploration activities at the Pahtavaara gold project in the Central Lapland Greenstone Belt ("CLGB") of Northern Finland.
The regional exploration program beyond the mine has identified an extensive gold anomaly in base-of-till (“BOT”) called Paskamaa East just 1km to the north west of the Pahtavaara mine and mill.
Furthermore, in-mine exploration, through extensive underground sampling and infilling previous gaps in assaying of historic diamond drill core continues to reaffirm and demonstrate potential for extensions to the resource model announced earlier in 2018. Highlights from underground channel sampling in the east of the mine are 24g/t Au over 1m in a previously untested development drive in the K-Zone and, in the western extents, 4g/t Au over 3m in the Whaleback zone and 4.2g/t Au over 3m in the Karoliina East area.
James Withall, CEO of Rupert Resources, commented, “Understanding of the geological controls on mineralisation continues to grow both at the mine and on a regional scale. The significant anomaly at Paskamaa East, so close to the mine, had not been identified by prior companies due to historic sampling and assay techniques. Improvements in exploration methodology for areas with glacial till cover, utilising detailed geophysics to identify structural controls and geochemical sampling both at surface, and at the bedrock interface with base-of-till rigs are being used to great effect by the geology team. A second base-of-till rig starts this week, allowing us to continue testing Paskamaa East and other near-mine targets whilst also pushing on with reconnaissance at our larger target areas in the west and south west of the licences. At the mine, drilling will recommence in November to test selected areas identified by the infill and underground sampling programs. Through an approach that combines international gold exploration experience with local knowledge and skills, we have confidence that the potential of this region for further significant gold mineralisation will be demonstrated.”
Rupert’s comprehensive summer fieldwork program of mapping and sampling over the project licence area combined with the updated regional geological interpretation, geophysics and historic geochemical sampling data has now been incorporated to ensure Rupert has a robust and systematic exploration targeting approach. The map in figure 1 highlights the key targets on the licence area which are now being sequentially tested with BOT sampling. As of the date of this release a total of 1662 BOT samples have been completed.
Base-of-till drilling Paskamaa East and West
Initial BOT sampling grids have been completed to the west (Paskamaa West) and north west (Paskamaa East) of the Pahtavaara mine, targeting areas of magnetic low similar to that which hosts the Pahtavaara mineralisation. Both areas are structural anomalies, based on interpretation of the magnetics, and include rock types similar to those at Pahtavaara. The Paskamaa East area also corresponds to a NW structural trend that intersects the mine area. Although poor outcrop in these areas makes exploration challenging, the BOT programs have highlighted similarities to the geological characteristics at the mine.
BOT results from Paskamaa East (figure 2) have highlighted a significant gold anomaly of >0.1ppm Au approximately 600m long by 150m wide, which broadly corresponds to a lithological contact zone identified from the magnetics. This zone includes several samples >0.5ppm Au which is comparable to the original geochemical anomaly located over Pahtavaara mine mineralisation. That anomaly was approximately 400m long and 100m wide and had values of >0.2ppm Au and subcropping areas of mineralisation yielding soil anomalies of up to 20ppm Au. The Paskamaa East anomaly has been further confirmed by infill BOT samples (final results not yet received). Two additional anomalies have been delineated in the Paskamaa East grid in the centre and to the north east (0.9ppm Au). Further BOT sampling is planned to extend the Paskamaa East grid to the NE.
Most importantly, the new BOT work is highlighting the significant improvement in the quality of the data as compared to historic work. Previous soil sampling in the Paskamaa East region (conducted by Terra Mining who also completed the original Pahtavaara soil program) did not locate any significant anomalies. It is considered likely that the shallower soil sampling technique was not effective in areas of substantial till coverage and was only effective at identifying near-surface, subcropping mineralisation.
At Paskamaa West BOT drilling to date has demonstrated minor gold anomalies along a number of linear features and other scattered anomalies of >0.1ppm Au. So far a specific target has yet to be identified from these results and more infill will be undertaken.
The program going forward includes further BOT infill in the Paskamaa East area while a second rig has been engaged to conduct reconnaissance BOT sampling at other identified regional targets to the west of Pahtavaara. These prospect areas include structural targets identified from the regional interpretation work as well as areas identified as anomalous from 2017 heavy mineral and Ionic Leach programs.
The results of Rupert’s in-mine exploration continue to demonstrate how the historic mining only partially extracted the resource due to a lack of geological understanding combined with poor data availability that resulted in insufficent mine planning at the time of operations. The results to date are increasing the confidence in the resource model developed in April 2018 based on a revised structural interpretation, and are providing the basis for a further focused drilling program at the mine that will begin in November 2018.
Underground Channel Sampling
An extensive underground mapping and channel sampling program has been progressing through 2018 and was completed at the beginning of September with final assays now returned for the 2944m of sampling completed this year. Since the previous update May 24, 2018 that highlighted the highest grade sample recorded at Pahtavaara, 3100g/t Au over 0.5m, numerous further unrecognized mineralised zones have been encountered in both the decline and underground development. The structural mapping undertaken will further enhance Rupert’s understanding of the controls on mineralisation in the deposit.
Highlights from channel sampling since May 24, 2018 update (see table 1 for summary results):
K-zone – This area, in shallow underground workings at depths of 75m below surface, represents the eastern extent of the main Samurai zone and channels 818119, 818120 and 818123 intersected multiple zones with grades between 0.5g/t Au and 1.5g/t Au along with 24g/t Au over 1m in a development drift to the south of the area of stoping in this zone.
Whaleback – This zone was the focus of mining toward the end of the previous operational period and represents the western extension of the main Samurai zone. Sampling here has revealed multiple areas of mineralisation ranging up to 4g/t Au over 3m (818131) including 1m at 10.2g/t Au, along with 3.1g/t Au over 1m in channel 818137, along with lower grade broader intercepts such as 0.9g/t Au over 11m in channel 818130.
Karoliina – This area has been targeted by Rupert’s drilling programs to date and is the western extension of the resource. There is less underground development in this area and previous operators had limited understanding of the controls on mineralisation. Significant intercepts include 1.8g/t Au over 6m in channel 818145 and 4.2g/t Au over 3m in channel 818147 that demonstrate the continuing potential for this part of the resource to be expanded further.
Infill Core Assaying
The previously announced program of infill assaying of the sampling gaps in historic diamond drilling has made good progress during the summer. To reiterate, over 40% of almost 320km of diamond drilling remains unsampled at Pahtavaara and a significant amount of this drill core remains at the site. These unsampled sections have been assumed to have no mineralisation for the purpose of the resource model so results achieved from the program should enhance the model further.
Highlights from infill assaying to date include (see table 2 for summary results):
NFE - an intercept of 9.8g/t Au over 0.5m from 40.5m in hole 114816 which adds to further shallow intersections in this hole of 6.4g/t Au over 1m from 16m and 42g/t Au over 2m from 33m. This hole is located in a 200m gap between two previously mined smaller open pits to the north east of the main deposit, close to an intersection in hole 111865 grading 9.8g/t Au over 6.1m. There remains limited further drilling and the area is a target for the next round of in-mine exploration.
Harpoon - an intercept of 6.5g/t Au over 1.3m in hole 117097 that extends a previously identified intercept to now be 1.9g/t Au over 8.1m from 63m downhole. This hole formed part of a program that was testing the potential for extensions of mineralisation to the north of the current NW pit.
Samurai – intercepts of 7.4g/t Au over 1m from 131m and 0.9g/t Au over 3.8m from 134.8m in hole 117394 combine with previous lower grade intercept 1g/t Au over 2.8m from 144m. This hole was drilled at a steep angle to test the depth extension of the Samurai zone a further 30m below the previous extent of mining at 480m below surface.
Karoliina West – two moderate intercepts in hole 117095 of 1.3g/t Au over 2m from 50m and 0.7g/t Au over 1m from 90m are noteworthy as this hole now contains two separate intervals, 7m at 0.8g/t Au from 46m and 11m at 3.3g/t Au from 80m. This hole is 25m and 50m along strike from holes 118019 and 117117 that intersected 1.2g/t Au over 13m from 55m and 6.8g/t Au over 17m from 61m respectively that have previously been reported. Drilling to investigate extensions to this near surface mineralisation will be undertaken in the next phase of in-mine exploration.
Further infill assaying will continue over the winter with selective sampling and re-logging of the available historic core that was left by previous operators.
Review by Qualified Person, Quality Control and Reports
In compliance with National Instrument 43-101, Mr. Mike Sutton, P.Geo. is the Qualified Person who supervised the preparation of the scientific and technical disclosure in this news release.
Rock samples (drill core and channel) are prepared by ALS Sodankylä Finland with prep-22 method crushing entire sample to 70% less than 6mm, pulverized to min 85% passing 75 microns, and assayed in ALS Romania by fire assay and AAS finish for gold. Multi-elements are assayed in ALS Ireland by four acid digestion with ICP-MS finish. Base of till samples are prepared in ALS Sodankylä by dry-sieving method prep-41, and assayed by fire assay with ICP-AES finish for gold. Multi-elements are assayed in ALS Ireland by aqua regia with ICP-MS finish.
All samples are under watch from the drill site to the core processing facility. The Company’s QA/QC program includes the regular insertion of blanks and standards into the sample shipments, as well as instructions for duplication. Standards, blanks and duplicates are inserted at appropriate intervals. Approximately five percent (5%) of the pulps and rejects are sent for check assaying at a second lab.
Rupert is a Canadian based gold exploration and development company that is listed on the TSX Venture Exchange under the symbol “RUP”. The Company owns the Pahtavaara gold mine, mill, and exploration permits and concessions located in the Central Lapland Greenstone Belt in Northern Finland (“Pahtavaara”). Pahtavaara has an Inferred mineral resource at a 1.5 g/t Au cut off grade of 4.6 Mt at a grade of 3.2 g/t Au (474 koz) (see the technical report entitled “NI 43-101 Technical Report: Pahtavaara Project, Finland” with an effective date of April 16, 2018, prepared by Brian Wolfe, Principal Consultant, International Resource Solutions Pty Ltd., an independent qualified person under National Instrument 43-101 – Standards of Disclosure for Mineral Projects). The Company also holds a 100% interest in two properties in Central Finland - Hirsikangas and Osikonmaki; the Gold Centre property, which consists of mineral claims located in the Balmer Township, Red Lake, Ontario; and the Surf Inlet Property in British Columbia.
For further information, please contact:
Chief Executive Officer
Head of Corporate Development & Investor Relations
Rupert Resources Ltd
82 Richmond Street East, Suite 203, Toronto, Ontario M5C 1P1
Tel: +1 416-304-9004
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Cautionary Note Regarding Forward Looking Statements
This press release contains statements which constitute ”forward-looking statements”, including, business activities and operating performance of the Company. The words “may”, “would”, “could”, “will”, “intend”, “plan”, “anticipate”, “believe”, “estimate”, “expect” and similar expressions, as they relate to the Company, are intended to identify such forward-looking statements. Investors are cautioned that forward-looking statements are based on the opinions, assumptions and estimates of management considered reasonable at the date the statements are made, and are inherently subject to a variety of risks and uncertainties and other known and unknown factors that could cause actual events or results to differ materially from those projected in the forward-looking statements. These factors include the general risks of the mining industry, as well as those risk factors discussed or referred to in the Company's annual Management's Discussion and Analysis for the year ended February 28, 2018 available at www.sedar.com. Should one or more of these risks or uncertainties materialize, or should assumptions underlying the forward-looking statements prove incorrect, actual results may vary materially from those described herein as intended, planned, anticipated, believed, estimated or expected. The Company does not intend, and does not assume any obligation, to update these forward-looking statements except as otherwise required by applicable law.
Table 1 – Summary results of underground channel sampling at the Pahtavaara Mine
|Channel ID||Zone||Easting||Northing||Elevation||Azimuth||Channel dip||From (m)||To (m)||Interval (m)||Au (g/t)||True Width (m)|
|Channel ID||Zone||Easting||Northing||Elevation||Azimuth||Hole dip||From (m)||To (m)||Interval (m)||Au (g/t)||True Width (m)|
Notes to table: A lower cut of of 0.5g/tonne Au has been used for all intervals. No upper cut-off grade was applied., minimum width of 0.5 metre, maximum 2 metre below the cut-off included in intervals. All sub intervals >5g/t noted as “inc.” Unless specified, true widths cannot be accurately determined from the information available.
Table 2 – Summary results of infill assay sampling at the Pahtavaara Mine
|Hole ID||Zone||Easting||Northing||Elevation||Azimuth||Hole dip||From (m)||To (m)||Down Hole* (m)||Au (g/t)|
Notes to table: A lower cut of 0.5g/tonne Au has been used for all intervals. No upper cut-off grade was applied., minimum width of 0.5 metre, maximum 2 metre below the cut-off included in intervals. All sub intervals >5g/t noted as “inc.” *Down hole length specified as true widths cannot be accurately determined from the information available.