Overview
Stage | Preliminary Economic Assessment |
Mine Type | Open Pit |
Commodities |
|
Mining Method |
|
Processing |
- Gravity separation
- Concentrate leach
- Agitated tank (VAT) leaching
- Carbon in leach (CIL)
- Elution
- Solvent Extraction & Electrowinning
- Cyanide (reagent)
|
Mine Life | 7 years (as of Jan 1, 2018) |
Latest News | Algold Provides Financial Update July 12, 2019 |
Source:
p. 15, 38
Company | Interest | Ownership |
Algold Resources Ltd.
|
100 %
|
Indirect
|
Société Tijirit Recherché et Exploration SARL .
(operator)
|
100 %
|
Direct
|
Société Tijirit Recherché et Exploration SARL (TIREX SA), a public limited company under Mauritanian law regularly incorporated and registered in the Nouakchott trade register on April 27, 2016 under the numbers 91408/GU/12417 (analytic register) and 1994 (chronological register), is a subsidiary of Kanosak Barbados, which is a subsidiary of the Algold Resources Company Ltd. ("Algold"), a Canadian company listed on the Toronto Stock Exchange in Canada. Tirex is 100 % owner of the Project.
Deposit Type
- Vein / narrow vein
- Banded iron formation
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 and shear and transposition deformation mostly in metasediments, meta-igneous and metabasic NE-trending sequences.
Eleonore1 - medium to fine grained gold is seen in various size quartz-carbonate-sulfide veining associated with shear and alteration zones within or in contact zones between meta-igneous, metasediments and metabasic rocks.
Salma - gold is related to late-tectonic quartz veins locally showing sulfides and host-rock alteration. Gold is concentrated in quartz veins trending north, dipping west and located either at the contact between the metabasite sequences and the granite, 250 or 600 m east of the contact in identical veins or within the metabasite sequence, 1 km west of the contact with similar type of quartz veins. The Salma structure can be followed over a 10-km strike.
At present, different types of gold mineralisation have been identified at the Tijirit project. It appears that gold mineralization is not always related to the iron formations but as in Tasiast the presence of iron-rich rocks in the vicinity or lithological density contrasts could have play a structural and/or mechanical role in the precipitation of gold. It is carried through fluid vector circulation resulting in potassic alteration and quartz veins or stockworks or pervasive silica and/or carbonate and sulphide-rich precipitation.
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 mine plan was established annually for the first four (4) years of production at a rate of 2,976 t/d, followed by a four (4) year period at 4,500 t/d. The annual production target will be 1,086,240 tonnes for Phase 1 and 1,642,500 tonnes for Phase 2. (with 138,805 tonnes in Year 8).
Seventeen (17) pits were designed for the Project resulting in just over 7 years of production between Phase 1 and Phase 2.
Processing
- Gravity separation
- Concentrate leach
- Agitated tank (VAT) leaching
- Carbon in leach (CIL)
- Elution
- Solvent Extraction & Electrowinning
- Cyanide (reagent)
Flow Sheet:
Summary:
The process plant was developed for two distinct phases of production. In the first phase of production, the plant was designed for an average daily capacity of 2,976 tonnes of run of mine (ROM) processed from the higher-grade deposits, mostly located in the Eleonore mining zone. After approximately four years of operation, the plant will undergo an expansion in order to process 4,500 average tonnes per day of ROM processed from the lower-grade deposits, located in the Lily and Sophie mining zones. For both phases, the process plant consists of traditional gravity and Carbon- In-Leach (CIL) circuits, followed by electrowinning to produce doré bars.
The Phase 1 average plant design feed grade is of 3.33 g/t Au, while in Phase 2, the average plant feed grade decreases to 1.07 g/t Au. Yearly gold production will vary between 50,000 oz. and 123,000 oz. of doré bars depending on the plant feed rate and grade.
The process plant includes the following unit process st ........

Recoveries & Grades:
Commodity | Parameter | Avg. LOM |
Gold
|
Head Grade, g/t
| 2.08 |
Projected Production:
Commodity | Units | LOM |
Gold
|
oz
| 580,901 |
All production numbers are expressed as metal in doré.
Operational Metrics:
Metrics | |
Stripping / waste ratio
| ......  |
Waste tonnes, LOM
| ......  |
Ore tonnes mined, LOM
| ......  |
Total tonnes mined, LOM
| ......  |
Tonnes milled, LOM
| ......  |
* According to 2018 study.
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Reserves at January 19, 2018:
Category | Tonnage | Commodity | Grade | Contained Metal |
Measured
|
376,000 t
|
Gold
|
0.98 g/t
|
11,900 oz
|
Indicated
|
2,841,000 t
|
Gold
|
1.72 g/t
|
157,550 oz
|
Measured & Indicated
|
3,217,000 t
|
Gold
|
1.64 g/t
|
169,450 oz
|
Inferred
|
10,492,000 t
|
Gold
|
1.92 g/t
|
648,790 oz
|
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Corporate Filings & Presentations:
Document | Year |
...................................
|
2018
|
...................................
|
2018
|
...................................
|
2018
|
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News:
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