The 4656ha Chico Property is a highly prospective precious-metal exploration project. The core claims were acquired in 2015 with additional claims added in 2016. The property lies 45 km SE of SSR Mining’s Seabee Gold Operation and 105km NW of Flin Flon, MB. It is accessible by fixed wing aircraft and winter road from the village of Pelican Narrows located 25km SE which in turn is serviced by an airport, Hwy 135 - an all-weather road and a hydro power grid.
The claims are 100% owned by Eagle Plains with no underlying royalties or encumbrances.
- Excellent geology favourable for gold deposits
- Significantly underexplored with encouraging early results
- On-trend with the currently producing Seabee Mine
- Multiple Au showings associated with favourable geology
- Numerous high-grade Au showings focused along a major structure
The Wood Lake Batholith underlies much of the property and is a multi-phase, medium to coarse-grained, locally porphyritic granite to granodiorite. Two small, medium to coarse grained diorite-quartz diorite plugs have intruded the Wood Lake Batholith near the south shore of Manawan Lake.
Mafic to intermediate volcanics of the Pine Lake belt contact the Wood Lake Batholith near the eastern property boundary. These volcanics are intensely deformed and difficult to classify. Locally, some of the less deformed units appear to contain quartz-filled amygdules and tuffaceous bedding.
Metamorphic grades on the property are typically middle amphibolite facies. Strain intensity is very high on the east side of the property and decreases westward, away from the Tabbernor Lake Fault. Steeply dipping, N-NE trending secondary shears of both a brittle and ductile nature are common up to 2 km west of the Tabbernor Lake Fault. Shears up to 100 m wide typically host considerable amounts of quartz veining.
Mineralization on the property is hosted by felsic to intermediate intrusive rocks, cut by a series of NE trending brittle-ductile shear zones that splay from the Tabbernor Fault. The gold mineralisation is intimately associated with quartz veining and/or associated sulphides (pyrite, pyrrhotite, chalcopyrite), as well as within sulphide bearing dykes. These veins and dykes are commonly associated with zones of dilatancy that occur within the structures.
The main type of deposit that is being explored for is a structurally-controlled mesothermal lode gold deposit. These structurally-controlled gold deposits are hosted by brittle, brittle-ductile, and ductile, moderately to steeply-dipping second and third order deformation zones associated with regional scale faults such as the Tabbernor fault. The nearest analogue to the Chico target zone would be the currently producing Seabee Gold Operation with approximately 1.2M oz of gold production. Although it was not strictly a mesothermal lode gold deposit, it should be noted that the Homestake Gold Deposit in South Dakota (>40M oz Au production), is also situated within the southern Trans-Hudson to the west of where the Tabbernor Fault terminates.
In 1932 the GSC conducted regional mapping of the area and district scale mapping occurred in 1957 and 1976 conducted by the Sask. Dept. of Mineral Resources.
In 1971, HudBay conducted an airborne geophysical program and identified several excellent N-NE trending conductors east of Manawan Lake.
In 1987, with gold exploration activities increasing in Saskatchewan, Royex Gold Mining (International Corona) Corp. carried out reconnaissance scale prospecting on the property which led to a 1998 program of geological mapping, prospecting, soil sampling and geophysics. The program identified three main areas of interest, the Western Zone, Main Zone and Royex Zone. A diamond drilling program was carried out in 1989 of which 2 holes were drilled on within the current property boundaries intersecting up to 1 oz/t in the Western Zone.
In 1992, Cameco optioned the property and exploration work that year identified several new showings including the Chico (up to 69 g/t Au grab) and Jill (up to 102 g/t Au grab) occurrences, and identified the Chico Zone. The Chico Zone is an impressive N-NE trending structural feature, traced over 1,500 m strike and up to 100 m wide, encompassing the original Royex, Main and Chico zones. Cameco drilled five broadly spaced holes on the Chico Zone intersecting significant gold mineralization in every hole, including 8.74 g/t over 1.1m true thickness.
Prospecting programs by Northwind Resources in 2005, 2008 and 2010 confirmed the presence of high-grade gold mineralization (13.83 g/t, 24.57 g/t, 32.47 g/t) on the property from several new and historic showings. The most significant of the new showings was the Wingnut, 1 km SW and along strike of the Western Zone. The showing consists of a quartz vein/ shear system with a grab sample from this vein returning up to 41.35 g/t Au.
Conclusions from the last exploration conducted prior to Eagle Plains acquisition were that detailed prospecting on the property continues to make new discoveries. The best results from the 2010 prospecting program was a sample of sheared quartz veining with chalcopyrite which returned a gold value of 13.85 g/t from a grab sample. As has been the case in previous programs, the best mineralization is focussed on sulphide rich shear zones with a NE orientation. Recommendations included that additional work is warranted on the claims, prospecting and geological mapping can be carried out as a matter of course, but more advanced exploration techniques are more than justified at this time. A detailed airborne geophysical survey should be flown over the property and surrounding area in light of looking at potential structural elements that would yield high quality drill targets.
The most significant of the mineralized structural zones identified on the property is the Chico-Royex or Main Quartz Swarm. The Chico system is an impressive looking structure with abundant sulphides, quartz veining and gold mineralization up to 100 m wide and has been traced over a strike length of 1,500 m. Two 50-100 m wide protomylonitic zones at opposite ends of the structure are joined by an intensely sheared, narrower section. This intensely sheared section hosts significant gold mineralization over a strike length of at least 600 m. The 1993 drilling by Cameco in five broadly spaced holes intersected significant gold mineralization in every hole, including an intercept of 0.281 oz/ton Au/ 2.0 m at a depth of 85m. Significant gold mineralization associated with a structure of this magnitude, is very encouraging. The potential for discovering economic gold mineralization along this structure remains promising.
Ed Zone Structural Zone
The Ed Structural zone consists of several showings within a ten to twenty metre wide locally sulphidic protomylonite series of bifurcating structures over a strike length of 450 metres. The Ed structural zone was drill tested by three relatively shallow diamond drill holes with a best result of 0.16 oz/t Au over a core length of 1 metre.
Western Structural Zone
The Western structural zone is a five to ten metre wide N-NE trending structure occurring along a diorite-granite contact. The Nigel showing defines the Western structural zone with strongly sheared diorite, quartz veining and sulphides identified over 40 metres of strike. Evidence for the Western structural corridor is found over approximately 530 metres of strike length. Drilling by Corona returned a best result of 1 oz/ton over a down-hole length of 0.9 metres, immediately under the Nigel showing.
Located approximately 1 km SW of the Western structural zone, the Wingnut showing consists of intermittently defined quartz veins in a shear. A grab sample of vein containing visible gold returned an Au value of 41.35 g/T.
Eagle Plains Exploration
The Chico project was acquired as a result of an internal research program conducted during 2013-2106 for highly prospective Au projects in western Canada. A comprehensive data compilation of historic work was conducted in the summer of 2016 followed by a ground-based exploration program later that season. Based on the 2016 results a more extensive work program was carried out in 2017.
The 2016 exploration program comprised of an airborne geophysical survey preceded by geological mapping, prospecting and a sampling program. Rock grab as well as selected chip and channel samples were collected throughout the property including several historic showings. The best result obtained fromthe sampling was 20.2 g/T from a 1 metre channel sample of the Jill Showing. Grab samples returned respective gold values of 9.81 g/T and 10.1 g/T from the Chico and Royex showing. Soil sampling was carried out over the main Chico Zone as well as over an area between the Wingnut occurrence and Western structural zone. Numerous anomalous samples and several anomalous trends were identified and a well-established correlation between the Chico mineralization and B-horizon soil anomalies was identified.
In 2017 an I.P. geophysical survey was conducted to determine what electrical responses are associated with the known surface gold mineralization at the Chico-Royex and Western mineralized trends and to use this info to refine future drill targets. Most of the known showings have discernable positive IP chargeability responses, with variable high and low resistivity responses. In general, known surface mineral showings tend to have relatively small IP anomaly signatures with chimney-like geometries that appear to expand in size and strength with depth. The current inference from the geophysical data is that mineralization potential increases below depths of 75 to 125 meters vertical. Based on this inference it is recommended that future drilling programs be designed to test the sub-vertical projections of known surface geochemical and geological targets at, or below these depths, into elevated zones of chargeability.
In light of the historical findings, rapid discovery in 2013 of new mineralization up to 9.2 g/t Au in sheared metavolcanic outcrop and results of the more recent exploration programs, further work on the property is recommended. The fact that this mineralization is found in the same geological setting as the nearby >1M oz producing Seabee mine gives additional credence to this project as having good Au potential.
The Chico Project is a highly prospective target in an underexplored area of northern Saskatchewan. Historic exploration on the property has consistently identified significant new mineralized zones with each successive phase. The 2016 exploration work has confirmed the presence of high-grade gold mineralization in steeply-dipping, N-NE trending secondary brittle to ductile tensional shears related to the Tabbernor Lake Fault. These shear zones may be up to 100 m wide and contain considerable amounts of quartz veining in zones of dilatancy, as well as abundant disseminated sulphides. High grade gold mineralization was confirmed from zones like these with the best values obtained from the Jill, Chico and Royex, including a chip sample returning 20.2 g/T over 1 metre at the Jill, an 8.91 g/T grab sample from the Chico , and a 10.1 g/T grab result from the Royex. The most significant new data collected during the exploration program was related to the B-horizon soil sampling program. The Chico Zone sampling confirmed a high correlation between the soil results (up to 4,530 ppb Au) and nearby mineralization with no significant displacement
or dispersal train related to glacial effects apparent. Based on this data and their relationship to currently identified structural zones, the three to four soil anomalies that were identified between the Wingnut and Western Zones appear to be valid. These anomalies are not as strong as those over the Chico, however this is most likely related to the overall depth of the soil horizon, although glacial dispersion has not been ruled out. The Chico Structural Zone, Wingnut and strike extent of the Western and Ed structural zones remain high priority exploration targets.
Based on the results of phase one of the 2017 exploration program consisting of an I.P. geophysical program, soil sampling and integration of historical data, phase two of the program is recommended. This is to comprise of 1,600 metres diamond drilling over 12 to 15 holes.
Eagle Plains - A Project Generator
Eagle Plains Resources is a project generator with mineral exploration properties of merit that meet qualifying transaction requirements. While the Chico Property is currently under option and not available, other quality exploration projects are available for option to joint-venture partners. We facilitate the listing process for capital pool companies and initial public offerings while providing technical expertise for exploration programs. Companies interested in co-operatively exploring any of these projects please contact: Tim Termuende at email@example.com or Mike Labach at firstname.lastname@example.org or call 1 866 Hunt Ore (486 8673).
Updated March 1, 2018