Overview
| Stage | Permitting |
| Mine Type | Open Pit |
| Commodities |
|
| Mining Method |
|
| Mine Life | 12 years (as of Jan 1, 2017) |
Orea is awaiting a decision by the Supreme Court of France regarding the renewal of the Montagne d’Or mining titles.
In light of the sanctions and ongoing regulatory actions, Nord Gold PLC's production numbers for the year 2022 are not available. |
| Latest News | Orea Terminates Acquisition of Additional Interest in Montagne d'Or Project November 28, 2023 |
Source:
p. 1
The Montagne d’Or project is a joint venture between Nordgold SE (55.01%) and Orea Mining Corp., formerly Columbus Gold Corp.(44.99%).
On 31 August 2022, Nordgold Group announces that it has entered into a legally binding letter agreement with Orea Mining Corp. to sell its 55.01% interest in the Montagne d’Or joint-venture company in French Guiana, France.
On 20 July, 2023, Nordgold Group and Orea Mining agreed to amend the proposed terms of the share purchase agreement, and to defer signing pending feedback from the applicable sanctions authorities.
The applicable sanctions authorities have advised Orea that they are reviewing the Amended Agreement. Orea is unable to provide guidance on when it might receive a reply.
Contractors
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Deposit Type
- Vein / narrow vein
- VMS
- Breccia pipe / Stockwork
Summary:
The current interpretation is that Montagne d’Or is a deformed volcanogenic massive sulphide deposit (Ross 2014).
The Montagne d’Or prospect consists of a family of tabular mineralized bodies that form closelyspaced sub-parallel east-northeast (084°) striking and steeply (72°) south-dipping mineralized zones. Mineralization has been encountered over a strike length of more than 2,500 m and to a vertical depth of at least 200 m. Only a small portion of the gold mineralization has been subjected to upper level oxidation. The significant fine-grained gold mineralization is principally affiliated with sulphide veins and masses within fresh country rock that begins at shallow depths.
Two significant styles of gold mineralization have been recognized although they show a gradational relationship between each other:
-SMS with gold mineralization
-Sulphides in disseminated stringers with gold mineralization
SMS was a term coined by previous operators and was used to support a “VMS” type model for the mineralization. It is characterized by a high sulphide content (>20%) and occurs over intervals ranging from tens of centimetres to up to 4 m. This mineralization was later interpreted to represent zones of thicker, deformed and transposed sulphide ± quartz-rich veins and a denser distribution of disseminated sulphide as compared to that of the disseminated type.
The SMS also includes sulphide-rich breccia dykes, which host rol ........
Summary:
The project is located on the side of a moderately sized hill, surrounded by dense tropical rainforest in a remote location that has been disturbed by historical illegal mining. Mining will be via an open pit, approximately 2.5 km long by 500 m wide, and of varying depth from surface, with a stripping ratio of 4.5 t waste:t ore. The open pit is located on the side of a hill. The average pit north wall is approximately 125 m deep from original ground surface, and the average pit south wall is approximately 225 m in height. The pit centroid depth from original ground surface is 185 m.
The mine production schedule is based on feeding the processing facility operating at a rate of 4.6 Mtpa of mill feed.
A low grade stockpile has been designed to ensure that the highest grade ore is processed first, ahead of lower grade ore which will be processed at the end of the mine life. The maximum low grade stockpile size is approximately 8 Mt. Mining rates have been adjusted by up to 30% to account for the wet and dry seasons that will be encountered during operations.
The open pit mining methods will use front-end loaders and hydraulic excavators to load haul trucks for waste and ore haulage. Mining activities will include site clearing, removal of growth medium (topsoil), free-digging, drilling, blasting, loading, hauling and mining support activities. Material within the pit will be generally blasted on a 5 m high bench. Most of the saprolite material (a ........
Source:
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Flow Sheet:
Summary:
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Projected Production:
| Commodity | Units | Avg. Annual | LOM |
|
Gold
|
koz
| 214 | 2,572 |
All production numbers are expressed as metal in doré.
Operational Metrics:
| Metrics | |
|
Daily processing rate
| 12,330 t * |
|
Annual mining rate
| 35,091 kt * |
|
Plant annual capacity
| 4,500 kt * |
|
Annual processing rate
| 4,575 kt * |
|
Stripping / waste ratio
| 4.5 kt * |
|
Waste tonnes, LOM
| 241,753 kt * |
|
Ore tonnes mined, LOM
| 54,114 kt * |
|
Total tonnes mined, LOM
| 295,867 kt * |
|
Tonnes processed, LOM
| 54,115 kt * |
* According to 2017 study.
Reserves at December 31, 2020:
Cut-off grade for resources is 0.4 g/t Au.
| Category | Tonnage | Commodity | Grade | Contained Metal |
|
Proven
|
8.245 Mt
|
Gold
|
2 g/t
|
527 koz
|
|
Probable
|
45.868 Mt
|
Gold
|
1.5 g/t
|
2,218 koz
|
|
Proven & Probable
|
54.113 Mt
|
Gold
|
1.6 g/t
|
2,745 koz
|
|
Measured
|
10.328 Mt
|
Gold
|
1.8 g/t
|
599 koz
|
|
Indicated
|
74.818 Mt
|
Gold
|
1.35 g/t
|
3,247 koz
|
|
Measured & Indicated
|
85.146 Mt
|
Gold
|
1.41 g/t
|
3,846 koz
|
|
Inferred
|
20.202 Mt
|
Gold
|
1.48 g/t
|
964 koz
|
|
Total Resource
|
105.348 Mt
|
Gold
|
1.42 g/t
|
4,810 koz
|
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