Overview
Status | Inactive / Suspended |
Mine Type | Open Pit |
Commodities |
|
Mining Method |
|
Mine Life | 15 years (as of Jan 1, 2021) |
In autumn 2014, the Certej project Eldorado Gold started construction works without a valid permit. After legal action and citizens’ petitions, regional authorities ordered Eldorado Gold to halt the works.
A final ruling from the Cluj Court of Appeal of 2019 annulled the urban plan for the Certej mine proposal. On 17 July 2020, the Oradea Court of Appeal rejected a request submitted by Deva Gold asking for a review of a final ruling. This latest decision is final.
During 2022, Eldorado Gold recorded impairment on the Certej project. The project has been presented as a disposal group held for sale as at March 31, 2023. |
Source:
p. 141
Deva Gold S.A. is the 100% owner of the Certej.
80.5% shares issued to an indirectly owned subsidiary of Eldorado Gold, 19.25% shares issued to Minvest S.A., 0.25% shares issued to a minority shareholder.
The co-ownership of Deva Gold is governed by the Articles of association and the Incorporating Contract.
Contractors
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Deposit Type
- Epithermal
- Breccia pipe / Stockwork
Summary:
The Certej deposit is best classified as an intermediate sulfidation epithermal deposit based on the abundance of base metals (Pb, Zn, including Fe-poor sphalerite) associated with Au and the presence of a near neutral pH alteration assemblage of quartz-illite-pyrite ±adularia±carbonate. The related igneous rock composition and tectonic setting are also consistent with an intermediate sulfidation ore forming environment; specifically the calcalkaline andesite association and broadly extensional stress state of the magmatic arc, albeit at a distance significantly distal from the arc. Analogous terms in the literature classify similar deposits as sulfide and base metal-rich low-sulfidation epithermal deposits and carbonate-base metal gold deposits.
In the Certej deposit three main andesite phases are recognised, namely Hondol, Dealu Grozii (part of the larger Sacaramb andesite), and Baiaga. The three andesites are broadly similar in composition but the Dealu Grozii/Sacaramb andesite typically contains biotite and is coarse grained, whereas the younger Baiaga andesite is fine grained. The Dealu Grozii and Hondol andesite occur respectively on the eastern and western edges of the main Certej deposit and the Baiaga andesite is located in the centre of the deposit and at depth, and is flanked by Cretaceous and Neogene sedimentary rocks. Silvers of ophiolitic rocks (dominantly altered basalt) are localized along fault and breccia zones within the Cretaceous sedimentary p ........

Summary:
The project involves the mining and processing of 3.0 Mtpa of ore. Ore would be provided to the process facilities for the first 13 years from the open pit, and for a subsequent two years from the low grade stockpile.
The deposit would be mined by an owner-operated fleet utilizing conventional open pit methods, including drilling, blasting, loading and hauling. Ore would be transported by 90 tonne haul trucks directly to the ore processing facilities. Low grade ore would be hauled to a stockpile for rehandling and processing at the end of the mine life. Waste rock from the open pit would be either hauled to the waste rock dumps located in close proximity to the pit or used for construction of the tailings management facility embankment.
The pit development at Certej will follow progressive phases, which smooth out the production demand thereby limiting and deferring equipment purchases. The phase designs include the East Starter Pit, The East Expansion Pit, The West Satellite Pit and the West Pit.
Each phase has the same geotechnical parameters as the final pit design and is designed with 5m bench heights. The mining schedule draws upon sequential benches of the four phased pits with the phases running concurrent at times.
Source:

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Flow Sheet:
Summary:

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Projected Production:
Commodity | Units | Avg. Annual | LOM |
Gold
|
koz
| 140 | 2,100 |
Silver
|
koz
| ......  | ......  |
All production numbers are expressed as metal in doré.
Operational Metrics:
Metrics | |
Annual ore mining rate
| 3 Mt * |
Annual milling capacity
| 3 Mt * |
Stripping / waste ratio
| 2.96 * |
Waste tonnes, LOM
| 131.1 Mt * |
Ore tonnes mined, LOM
| 44.3 Mt * |
Total tonnes mined, LOM
| 175.4 Mt * |
* According to 2016 study.
Reserves at September 30, 2021:
Mineral reserve cut-off grade is 0.90 g/t Au Equivalent grade (=Au(g/t)+Ag(g/t)*0.0121).
Mineral resource cut-off grade is 0.6 g/t Au.
Category | Tonnage | Commodity | Grade | Contained Metal |
Proven
|
22,788 kt
|
Gold
|
1.93 g/t
|
1,414 koz
|
Proven
|
22,788 kt
|
Silver
|
10 g/t
|
7,004 koz
|
Probable
|
21,500 kt
|
Gold
|
1.43 g/t
|
988 koz
|
Probable
|
21,500 kt
|
Silver
|
12 g/t
|
8,551 koz
|
Proven & Probable
|
44,288 kt
|
Gold
|
1.69 g/t
|
2,402 koz
|
Proven & Probable
|
44,288 kt
|
Silver
|
11 g/t
|
15,555 koz
|
Measured
|
29,300 kt
|
Gold
|
1.73 g/t
|
1,626 koz
|
Measured
|
29,300 kt
|
Silver
|
9 g/t
|
8,111 koz
|
Indicated
|
58,653 kt
|
Gold
|
1.17 g/t
|
2,203 koz
|
Indicated
|
58,653 kt
|
Silver
|
10 g/t
|
18,103 koz
|
Measured & Indicated
|
87,953 kt
|
Gold
|
1.35 g/t
|
3,829 koz
|
Measured & Indicated
|
87,953 kt
|
Silver
|
9 g/t
|
26,214 koz
|
Inferred
|
842 kt
|
Gold
|
0.86 g/t
|
23 koz
|
Inferred
|
842 kt
|
Silver
|
4 g/t
|
110 koz
|
Commodity Production Costs:
| Commodity | Units | Average |
All-in sustaining costs (AISC)
|
Gold
|
USD
|
730 / oz *†
|
C1 cash costs
|
Gold
|
USD
|
550 / oz *†
|
C2 total cash costs
|
Gold
|
USD
|
630 / oz *†
|
Assumed price
|
Silver
|
USD
|
18 / oz *
|
Assumed price
|
Gold
|
USD
|
1,300 / oz *
|
* According to 2016 study / presentation.
† Net of By-Product.
Operating Costs:
| Units | 2016 |
OP mining costs ($/t mined)
|
USD
| 1.55 * |
OP mining costs ($/t milled)
|
USD
| ......  |
Processing costs ($/t milled)
|
USD
| ......  |
Total operating costs ($/t milled)
|
USD
| ......  |
* According to 2016 study.
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2016 Study Costs and Valuation Metrics :
Metrics | Units | LOM Total |
Initial CapEx
|
$M USD
|
......
|
Sustaining CapEx
|
$M USD
|
......
|
After-tax Cash Flow (LOM)
|
$M USD
|
......
|
After-tax NPV @ 5%
|
$M USD
|
......
|
After-tax IRR, %
|
|
......
|
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Source:

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Mine Management:
Job Title | Name | Profile | Ref. Date |
.......................
|
.......................
|
|
May 6, 2023
|
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Corporate Filings & Presentations:
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