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.
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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 ........

Source:

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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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