Douay Gold Project
Overview & Highlights
After a series of drill campaigns by multiple owners, the Douay project was acquired from Vior Inc. by Aurvista Gold in 2011. More recently, Maple Gold invested in the reprocessing of ~130,000 metres of historic drill-core and data to establish a more comprehensive and cohesive property-wide database. During 2018, the Company will complete the final 27,000 metres of re-logging and historic assaying and update the geologic model to support future targeting at the Project. Maple Gold filed an updated resource estimate in April 2017 and has expanded the Douay Gold Project to now cover a 55 km segment along the Casa Berardi Deformation Zone and with a claims total of 370 km² within the prolific Abitibi Greenstone Belt.
- Located in one of the best mining jurisdictions in the world
- Established gold resource (2.8M oz Au)
- Royalty free except for 1% NSR that covers only 40k oz (NW Zone & small area of West Zone) of the current resource
- Excellent infrastructure with large operating mines within 150km
- District-scale 370km2 property package
- 55 km of strike along the Casa Berardi Deformation Zone
- Significant resource expansion and exploration upside
Near future exploration & upcoming catalysts
- Selective re-logging, exploration and drill targeting results (Q4 2017)
- 25,000 – 30,000 metres of drilling planned
- Resource expansion and brownfields drilling (Q1 2018)
- New greenfields discovery drilling (Q1 2018)
- Updated resource estimate (2018)
Location & Infrastructure
The Douay Gold Project is located in Quebec, Canada. The Project is approximately 2 hours north of Val-d’Or via Highway 109 with the exploration camp accessible via gravel road less than 10 minutes from the main highway.
The project benefits from existing infrastructure, which includes:
- HWY 109 leads to and cuts across the Project
- Hydro-Powerline (Powerline 6) currently runs right through the Project
- Full-service 20 person camp with plans for 75-man camp by late December
- Core logging & storage facilities
- Rail within 50km (Matagami)
Project Geology: The Douay Gold Project covers an area of more than 370 km² along the Casa Berardi Deformation Zone (“CBDZ”) within the prolific Abitibi Greenstone Belt (“AGB”). Douay belongs to the syenite-associated gold class of mineral deposits, which includes Beatty (>5.6Moz Au), Holt-McDermott (>1.3Moz Au), and Canadian Malartic (>17Moz Au) in the AGB. The area is also prospective for the more typical AGB orogenic style (structurally controlled gold-quartz veins and veinlets) of gold deposit as well as for volcanogenic massive sulphide (“VMS”) deposits.
Douay consists of a northern corridor of relatively well preserved tuffs of felsic to intermediate compositions, the central 3 km wide Douay-Style Mineralization (“DSM”) corridor enclosing the CBDZ, with a mix of syenitic porphyries, basalts, felsic volcanic rocks and iron formations, and gold-hosted shear zones, and a southern corridor of mostly basalts with siliceous-chemical sediments and chlorite-sulphide bearing feeder-pipes, both typical of VMS systems. The volcanic stratigraphy trends WNW to ESE, whereas the major regional fault zones trend E-W. . Existing drill data shows multiple higher-grade zones, including Douay West, within and near
an elongated body of syenite porphyry over an area of at least 6.5 x 2 km. In addition, there are further poorly explored known and possible syenite bodies elsewhere on the property.
Alteration assemblages and micro-fracturing in brittle rocks hosting narrow veinlets of quartz-carbonate with pyrite are associated with higher gold values, generally above 5 g/t gold over metric intervals within the DSM. Fractured syenite containing fine pyrite veinlets in addition to disseminated pyrite, encompassing altered basalt fragments and magnetite-rich "iron formation", yield 100 ppb to 1 g/t gold over decametric to hectometric intervals.
The Project contains resources as listed in the table below:
|Mineralized Zone||Category||Metric Tonnes||Average Gold Grade (g/t)||Contained Gold (oz) (0.5 g/t cut-off grade)|
|Douay West (DW)||Inferred||4,468,000||2.36||339,000|
|Main Zone (MZ)||Inferred||311,000||1.55||15,000|
|Zone 10 (MZ10)||Inferred||1,815,000||1.38||80,000|
|Zone 20 (MZ20)||Inferred||3,565,000||0.71||81,000|
|Central Zone (CZ)||Inferred||510,000||1.20||20,000|
1. The mineral resources above which are not mineral reserves 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 quantity and grade of reported inferred resources in this estimation are conceptual in nature and there has been insufficient exploration data to define these inferred resources as an indicated or measured category and it is uncertain if further exploration will result in upgrading them to an indicated or measured mineral resource category.
3. The mineral resource estimate and open pit optimization have been prepared without reference to surface rights or the presence of overlying natural constrains / public infrastructure.
4. The multiple open pit shells used are the ultimate-breakeven pit shell cones, which do not consider pit design or minimum mining width.
5. Figures may not total due to rounding.
The first gold discovery at the Douay Gold Project was made by Inco Ltd. in 1976. From 1976 to 2017 a total of ~222,000 metres of drilling has been completed, including ~66,000 metres by Aurvista (2011-2017), see the table below:
|Company||Year||Drill Holes||Total Metres||Cumulative Drill Holes||Cumulative Metres|
|Inco, SOQUEM and Aurizon||1976 to 1999||468||122,906||468||122,906|
|Vior||2004 to 2010||107||32,785||575||155691|
|Aurvista||2011 to 2017||182||66,142||757||221,833|
|TOTAL||1976 to 2017||757||221,833|
The Douay Gold Project hosts numerous high-grade gold occurrences within larger low-grade envelopes of mineralization. Visible gold often occurs in quartz micro-veinlets and the table below highlights some of the high-grade results reported from previous drill campaigns:
|Drill Highlights from Previous Drill Campaigns|
|DDH# (Year Drilled)||Location||Gold Grade (g/t)||Intercept (m)|
|D-102 (2005)||Douay West||15.01||8.20|
|DO-12-97 (2012)||Adam Porphyry||1.07||183.00|
2017 Spring - Summer Drilling Campaign
Figure 1: Central Segment of Porphyry System Drill Highlights
Figure 2: Aurvista Resource Zones Map with 2017 Drill hole Locations
Exploration Upside & Go-forward Plans
Figure: Highlighted Drill-Hole Locations (black) for Completion of Historical Core Re-logging Project
This brownfields area at the Douay Gold Project contains two distinct styles of gold mineralization, as well as copper-zinc associated with volcanogenic massive sulphide (“VMS”) mineralization. Gold mineralization hosted by altered mafic volcanics is generally of higher grade, occurring in zones such as Douay West (4.47 Mt @ 2.36 g/t Au; Micon, 2017), whereas gold hosted by altered porphyritic rocks forms large lower-grade zones such as the Porphyry Zone (72.16 Mt @ 0.96 g/t Au; Micon, 2017). The Douay Resources are open along strike and plunge, such that brownfields exploration potential for resource expansion is considered excellent.
The remaining majority portion of the Project remains relatively unexplored, despite its location along a major regional structure. This greenfields area is considered to have potential not only for VMS and mafic- and porphyry-hosted gold mineralization, but also for other styles of mineralization such as occurs elsewhere along the CBDZ and in the region (i.e. Casa Berardi, Estrades, Eagle - Telbel, Vezza, and Sleeping Giant deposits).
The Company has revised its exploration plans to capture both the brownfields and greenfields potential of the project. A thorough review and analysis of all existing geological, geochemical and geophysical data is in progress, which combined with generation of new data from re-logging and sampling programs (see figure), will be used to produce a comprehensive exploration strategy and diamond drilling plan during Q4 2017.
For more information on the Company’s exploration and drilling plans: News Release – Sep 12, 2017: Updated Exploration Plans
Communities and the Environment
Aurvista Gold Corporation understands and appreciates the shared value that mining can bring but also understands its risks and the importance of responsible and sustainable development. Our Company strives to maintain the highest standards of environmental protection and community engagement throughout the exploration and potential development process. We are focused on bringing shared value to the Northern Abitibi and all of our stakeholders.
Unless otherwise stated, the scientific and technical data contained within this website was reviewed and approved by Fred Speidel, M.Sc., P.Geo., Vice-President, Exploration, who is responsible for ensuring that the geologic information provided on this website is accurate and acts as a “qualified person” under National Instrument 43-101 Standards of Disclosure for Mineral Projects.