Overview
| Stage | Preliminary Economic Assessment |
| Mine Type | Open Pit |
| Commodities |
|
| Mining Method |
|
| Mine Life | 8.1 years (as of Jan 1, 2018) |
Source:
p. 2
June 11, 2021 - Aya Gold & Silver Inc. (TSX: AYA) (“Aya” or the “Corporation”) is pleased to announce closing of the previously announced acquisition of Algold Resources Ltd.
Aya Gold & Silver Inc. controls 100% of Algold Resources Ltd and is the 75% owner-operator of Tijirit Gold Project, with the remaining 15% owned by the Government of Mauritania and 10% by Wafa Mining & Petroleum.
The Algold’s operating subsidiary is the Société Tijirit Exploitation SA (Tirex S.A.) (formerly known as Société Tijirit Recherché et Exploration SARL), incorporated to operate the Tijirit and East Tijirit licenses.
Contractors
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Deposit Type
- Banded iron formation
- Vein / narrow vein
Summary:
Tijirit project is located approximately 40 km southeast of the Tasiast gold deposit. The Tijirit mineralized zones are trending to the NNE and are rather sub-parallel to the Tasiast north-trending deposit. The style of gold mineralization varies on the Tijirit project; however, two major types have been identified as unique: Eleonore-type mineralization and BIFs type.
On Tijirit, gold mineralization is related to deformation zones affecting the iron formations, various metasedimentary sequences and intermediate and mafic metavolcanic and meta-igneous rocks. Gold is locally visible, mostly as native medium to small grain located in quartz ± carbonate veins and silicified zones within highly schistozed metabasites and locally associated with sulphides and metasediments or with quartz veins and altered zones near meta-igneous rocks.
The Tijirit mineralization can be classified according to the following:
- Sophie I, II - gold is related to quartz-carbonate-sulfide veining located in altered, sheared and folded zone within or near contacts between BIF (iron formation), metabasic and metasedimentary sequences.
- Sophie III - gold is located in the north limb of a regional fold in NE-trending sheared contact between metavolcanics and metasediments.
- Lily - gold appear as fine grains located in widespread quartz-carbonate-sulfide veinlets associated to various zones, showing disseminated pyrrhotite and pyrite, alteration ........
Summary:
The mining method selected for the Project is a conventional truck and shovel, drill and blast quarry operation. The mineralised material and waste rock will be mined at 5 m high benches, drilled, blasted and loaded into rigid quarry haul trucks with hydraulic excavators.
The recommended bench geometry within the slightly weathered to fresh rock is a bench face angle of 70 degrees, a bench height of 25 m, and a bench width of 10 m. Within the highly weathered, moderately weathered rock, a bench face angle of 65 degrees is recommended with a bench height of 10 m and a bench width of 7 m.
The benches will be constructed in 5 m lifts and stacked according to the design taking into consideration the weathering profiles.
The ramps and haul roads were designed with an overall width of 12 m. Both single-line and double-line traffic will take place in the pit. For double-lane traffic, a width of 2.5 times the width of the largest truck was considered. The overall width of a 55-tonne quarry haul truck is 2.9 m which results in a running surface of approximately 8 m. The allowance for berms and ditches increases the overall haul road width to 12 m.
A maximum ramp grade of 12 % was considered for pit design. This grade is acceptable for a 55-tonne rigid frame quarry haul truck.
A minimum mining width of 12 m was considered for the open pit design. This is based on a 9 m turning radius for a 55-tonne haul truck plus several metres o ........
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Flow Sheet:
Summary:
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Projected Production:
| Commodity | Units | Avg. Annual | LOM |
|
Gold
|
oz
| 104,500 | 580,901 |
All production numbers are expressed as metal in doré.
Operational Metrics:
| Metrics | |
|
Stripping / waste ratio
| 12.2 * |
|
Waste tonnes, LOM
| 111,915 kt * |
|
Ore tonnes mined, LOM
| 9,140 kt * |
|
Total tonnes mined, LOM
| 121,055 kt * |
|
Daily processing capacity
| 2,976 t * |
|
Tonnes processed, LOM
| 9,140 kt * |
|
Annual processing capacity
| 1,100 kt * |
|
Annual ore mining rate
| 1,018 kt * |
|
Mining scale, tpd
| 43,000 t |
|
Processing scale, tpd
| 2,976 t |
* According to 2018 study.
Reserves at May 12, 2021:
The mineral resources are presented at a 0.4 g/t Au cut-off grade in pits and 1.7 g/t Au cut-off grade under the pits, except for Eleonore, where a global cut-off of 1.5 g/t Au was applied
| Category | Tonnage | Commodity | Grade | Contained Metal |
|
Measured
|
668,000 t
|
Gold
|
2.53 g/t
|
54,500 oz
|
|
Indicated
|
3,485,000 t
|
Gold
|
2.13 g/t
|
238,100 oz
|
|
Measured & Indicated
|
4,154,000 t
|
Gold
|
2.19 g/t
|
292,600 oz
|
|
Inferred
|
10,160,000 t
|
Gold
|
1.63 g/t
|
533,200 oz
|
Pipelines and Water Supply
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Corporate Filings & Presentations:
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