Overview
Stage | Production |
Mine Type | Underground |
Commodities |
|
Mining Method |
- Sub-level open stoping (SLOS)
- Transverse stoping
- Longitudinal retreat
- Cemented paste backfill
- Cemented rockfill
- Unconsolidated rockfill
|
Production Start | ... |
Mine Life | 2027 |
The Turmalina Mining Complex consists of an underground mine and a CIL processing plant with three installed ball mills. Using only Mill #3, Turmalina is able to process the entire current and planned mine production.
Studies are underway to find opportunities to fill the unused plant capacity via the advancement of the Faina growth project towards PFS in 2023-2024, brownfield exploration and remnant mining. |
Source:
p. 13
Company | Interest | Ownership |
Jaguar Mining Inc.
|
100 %
|
Indirect
|
Mineração Serras do Oeste Ltda.
(operator)
|
100 %
|
Direct
|
The Turmalina Complex is operated by Jaguar’s wholly-owned subsidiary, Mineração Serras do Oeste (MSOL).
Contractors
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Deposit Type
- Mesothermal
- Banded iron formation hosted
- Vein / narrow vein
Summary:
The Pitangui area, where the Turmalina Complex is located, is underlain by rocks of Archaean and Proterozoic ages. Archaean units include a granitic basement, which is overlain by the Pitangui Group, a sequence of ultramafic to intermediate volcanic flows and pyroclastics and associated sediments. The Turmalina deposit is hosted by chlorite-amphibole schists and silicified biotite schist units within the Pitangui Group. A sequence of sheared, banded, sulphide-facies and silicate-facies iron formations and cherts lies within the stratigraphic sequence. The stratigraphy broadly strikes towards an azimuth of 135°.
At the Complex, Orebody A and Orebody B are understood to be typical examples of mesothermal, epigenetic, and veined deposits that are enclosed by sedimentary host rocks that have undergone amphibolite-facies metamorphism. The origin of the three individual economic zones of Orebody C is a bit more controversial, as they are hosted by a stratigraphic horizon composed essentially of unique volcano-chemical BIFs and black carbonaceous schists. A summary of some of the main and common geological characteristics of these two potentially distinct groups of Archean gold deposits present in the Iron Quadrangle district follows.
The dimensions of the economic orebodies possess strike-lengths ranging between 50 m to 350 m for individual mined zones. Average thicknesses of the orebodies may range from 2 m to 20 m.
PROPERTY GEOLOGY
The mine ........
Mining Methods
- Sub-level open stoping (SLOS)
- Transverse stoping
- Longitudinal retreat
- Cemented paste backfill
- Cemented rockfill
- Unconsolidated rockfill
Summary:
The Turmalina Mine consists of several zones grouped into three orebodies – Orebodies A, B, and C. Two satellite deposits, Faina and Pontal, are located along strike to the northwest. The Turmalina Mine produces 1,100 tpd from Orebodies A and C.
Orebody A is folded and steeply east dipping, with a strike length of approximately 250 m to 300 m and an average thickness of six metres. Orebody A consists of two parallel narrow veins, however, these veins merge together in the northwestern portion of the deposit, forming a wider zone known as the Principal Zone. Orebody B includes three thinner, lower grade lenses parallel to Orebody A. Two of the lenses are located approximately 50 m to 75 m to the east in the hanging wall and are accessed by a series of crosscuts that are drive from Orebody A. Orebody C is a series of 26 lenses that are located to the southwest in the structural footwall of Orebody A and are generally of lower grade. They strike northwest and dip steeply to the northeast. Orebody C has replaced Orebody A as the Complex’s principal production source.
The mining method used at the Turmalina Mine is SLOS with delayed backfill. Both longitudinal and transverse versions of the method are used, depending on the width of the deposit. Access to the stopes is provided by sublevel development driven from the ramp. The sublevel interval is 20 m. The Turmalina deposit is mined in horizons between sublevels. Each horizon is mined in retreating fashion, starting at the end ........
Source:
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Flow Sheet:
Summary:
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Production:
Commodity | Units | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 |
Gold
|
oz
| ...... | ...... | ...... | ...... | 33,261 | 45,466 | 63,186 |
All production numbers are expressed as metal in doré.
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Operational Metrics:
Metrics | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
Daily processing capacity
| ...... | ...... | ...... | 2,000 t | 2,000 t | 2,000 t |
Annual processing capacity
| ...... | ...... | ...... | 720,000 dmt | 720,000 dmt | 610,000 dmt |
Ore tonnes mined
| ...... | ...... | ...... | | | |
Tonnes processed
| ...... | ...... | ...... | 333,000 t | 321,936 t | 427,000 t |
Daily ore mining rate
| ...... | ...... | ...... | 1,200 t | 1,200 t | 1,200 t |
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Reserves at December 31, 2022:
Mineral Reserves at Turmalina were estimated at a break-even cut-off grade of 2.32 g/t Au.
Mineral Resources at the Turmalina Gold Mining Complex are estimated at a cut-off grade of 1.72 g/t Au at Turmalina, 2.90 g/t Au at Pontal, 2.02 g/t Au at Pontal South and 0.75 g/t Au at Zona Basal. The Faina underground mineral resources are reported using constraining panels over 3.00 g/t Au cut-off.
Mineral Resources are reported inclusive of Mineral Reserves.
Category | OreType | Tonnage | Commodity | Grade | Contained Metal |
Proven
|
In-Situ (UG)
|
829 kt
|
Gold
|
3.79 g/t
|
101 koz
|
Probable
|
In-Situ (UG)
|
1,026 kt
|
Gold
|
3.41 g/t
|
113 koz
|
Proven & Probable
|
In-Situ (UG)
|
1,855 kt
|
Gold
|
3.58 g/t
|
214 koz
|
Measured
|
In-Situ (UG)
|
2,039 kt
|
Gold
|
4.76 g/t
|
312 koz
|
Indicated
|
In-Situ (UG)
|
3,441 kt
|
Gold
|
4.21 g/t
|
466 koz
|
Measured & Indicated
|
In-Situ (UG)
|
5,480 kt
|
Gold
|
4.42 g/t
|
778 koz
|
Inferred
|
In-Situ (OP)
|
781 kt
|
Gold
|
1.28 g/t
|
32 koz
|
Inferred
|
In-Situ (UG)
|
3,644 kt
|
Gold
|
3.94 g/t
|
462 koz
|
Corporate Filings & Presentations:
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