Ridley Lake Gold Project in Detail
Richmond’s Ridley Lake Property is located in Rollo and Raney Townships, Porcupine Mining Division, north central Ontario, 40 km southwest of the town of Foleyet and 120 km west-southwest of the city of Timmins. The Property can be accessed year round by a network of logging and bush roads.
The Property is centrally located within the Swayze Greenstone Belt, and covers an 8 kilometer section of the Ridout Shear Zone (the “RSZ”). The RSZ is currently believed to be the extension of the Larder Lake Break (i.e. host of the Kirkland Lake Gold Camp), and is the major structural feature in the region that is host to numerous gold deposits and occurrences.
Recent significant gold discoveries nearby associated with the Ridout Shear Zone include the Trelawney Cote Lake deposit (acquired by Iamgold in April 2012 for $585 million) located on strike 48 km to the east, and the Probe Mines Borden Lake gold discovery (acquired by Goldcorp for $526 million), located on strike 37 km to the west.
The Property consists of 196 contiguous unpatented single cell and boundary mining claims in which Richmond owns a 100% interest.
Exploration History and Local Geology
Early exploration work on the Property dates back to 1932 prospecting. At that time two significant quartz vein systems (the Cyril Knight and the Aguara Showings) trending east/west were discovered in the central and north central property area.
These veins were exposed on surface for lengths up to 245 m, with widths varying between 1 and 3 m. Gold assays from these veins were highly variable, with grades ranging from trace values up to 23 g/tonne gold (0.7 ounces per ton).
Between 1932 and 1982, little exploration work was carried out on the Property.
In 1982 Richmond staked claims covering the quartz vein showing areas and completed geophysical surveys, mapping, and trenching between 1983 and 1988. Results from this exploration work determined that the Aguara and Cyril Knight showing areas were coincident with magnetic and induced polarization anomalies of 3 to 4 times background levels.
A limited program of diamond drilling testing the Aguara Zone geophysical anomalies and surface showings was undertaken in 1989 (2,471 m in 13 holes). Eleven of 13 holes intersected broad zones of gold mineralization, with one hole failing to reach its target depth due to caving.
Further exploration work was halted in 1990 due to the filing of a Certificates of Pending Proceedings on the Property’s mining claims (the “Certificates”). The Certificates alleged that exploration funds intended for an unrelated mining project were actually used for exploration work on the Ridley Lake project.
Exploration work remained dormant until the Ontario Superior Court dismissed the Certificates in January 2014, and the Ontario Court of Appeal dismissed the appeal of that decision in February 2015. In March 2015 the Certificates were discharged from title to the claims.
At the time of the discharge, these proceedings were the oldest outstanding civil litigation in Ontario.
- The Property is underlain by the Swayze volcanic complex or the Swayze-Deloro metavolcanic-metasedimentary belt.
- This complex is an east-west trending belt composed, from the margins inward of mafic metavolcanics succeeded by metasediments with several centres of felsic volcanism along its length.
- Dikes and sills of quartz-feldspar porphyry with occasional granitoid stocks are commonly found throughout the belt.
- Also common are mafic to ultramafic rocks intruding metasedimentary-metavolcanic sequences as diorite to gabbroic sills and as diabase dike sets.
Gold mineralization discovered through diamond drilling in the Aguara Zone is associated with a variety of geological features that include:
- Shear zone development producing permeable conditions favourable for hydrothermal circulation.
- Carbonatization of mafic volcanics possibly releasing gold into the system.
- Development of silicified, carbonatized, chloritized, mineralized fracture zones.
- Emplacement of the feldspar porphyry sill/dike and quartz carbonate vein stockworks creating a “heat engine” for hydrothermal re-concentration and wall rock mineralization.
Exploration Program 2015
In June of 2015, a geophysical survey grid was cut on four of the Company’s 100%-owned claims located immediately to the east of the Aguara gold showing, followed by the completion of Spectral Induced Polarization (IP)/Resistivity & Magnetic surveys.
The surveys were successful in identifying a well-defined IP anomaly characterized by high chargeability and resistivity down to approximately 50 m and a prominent coincidental magnetic anomaly (the „Aguara East anomaly“), having a northeast orientation and a strike length in excess of 825 meters.
To test these targets Richmond completed 900 m of diamond drilling in 6 holes, all having an azimuth of 180 degrees and at an inclination of -45 degrees.
In November 2016 the Company completed a Spectral Induced Polarization (IP)/Resistivity survey to expand to depth the earlier IP survey completed in July 2015 on the Aguara East claims.
Modelling of the data obtained from the combined surveys identified multiple targets at vertical depths down to IP survey limit of approximately 200 meters and may indicate stronger pyrite mineralization (and possibly gold mineralization) with depth.
Testing these deep targets will be the primary focus of future drilling programs.
Exploration Program 2017
- In August and September of 2017, Richmond completed 2,258 m of drilling in 8 holes
- Broad zones of gold mineralization, particularly in the Central Aguara Zone, were intersected
- Zones appear to be getting wider with depth
The drill intervals reported for all drilling programs represent axial core intersection lengths and true widths are not known at this time.
Industry standard QA/QC programs were employed for the 2015/2016/2017 drilling programs
Fall 2018 IP surveying
Fall 2018 IP surveying on the newly cut Aguara western extension grid was successful in identifying five anomalous trends (identified as RW-1, and RW-4 through RW-7). The significant trend identified is RW-1, which appears to be the extension of the Aguara East IP Anomaly that was the focus of the first three phases of diamond drilling.
Trend RW-1 is centered about the West Grid Baseline and has now been extended from (metres) Line 3+00 E to Line 6+00 W. The trend is associated with strong apparent resistivities and is suggestive of strong quartz-carbonate alteration associated with possible gold mineralization.
Trend RW-5 is a prominent chargeability anomaly initially identified in the north eastern part of the survey grid and has now been extended to 7+50 W from 2+25 E. There is no history of diamond drilling in this area of the Property.
Trend RW-6 is a new anomaly that appears to originate approximately at line 5+25 W in the southern part of the survey grid. This anomalous IP response strikes to the northwest and has a deeper source (greater than 100 m). This anomaly appears to extend to the edge of the survey grid at 9+00 W, where it becomes quite wide and deep, and is open along strike to the west and to depth. The associated resistivities of this anomaly exceed 10,000 ohm-m and may also be indicative of possible gold mineralization.
Trend RW-7 is observed intermittently at larger dipole separations also indicating a greater depth to source. This trend is located between RW-1 and RW-5. Associated resistivities of this anomaly are in excess of 10,000 ohm-m and there is no history of diamond drilling in this area of the Property.
Multiple strong and deep magnetic/IP anomalies remain untested 600 m west of and on strike with the Aguara zone. These zones will be the primary target of the next round of drilling at the Ridley Lake Gold Project in 2020.