Overview
Stage | Production |
Mine Type | Underground |
Commodities |
|
Mining Method |
- Pillar mining
- Resue mining
- Cut & Fill
- Room-and-pillar
|
Production Start | ...  |
Mine Life | 7 years (as of Jan 1, 2021) |
Segovia Operations is a high-grade underground mining operation.
The Segovia Operations include the purchase of mined material from partnerships with artisanal and small-scale miners (the Small-Scale Miner Program) and represented about 17% of the Company’s 2022 gold production. The Small-Scale Miner Program is an industry-leading Colombian program for the integration of informal artisanal and small-scale miners into the supply chain, through partnerships, with added environmental, social, training, security, and operational benefits.
The Segovia Operations have recently completed the expansion of the Maria Dama processing facility. |
Latest News | Aris Mining Announces High Grade Drill Results From Ongoing Segovia Operations Exploration Program August 16, 2023 |
Source:
p. 9,19
Company | Interest | Ownership |
Aris Mining Corp.
|
100 %
|
Indirect
|
Aris Mining Segovia
(operator)
|
100 %
|
Direct
|
Segovia Operations is owned by Gran Colombia Gold Segovia Sucursal Colombia (now Aris Mining Segovia), a Colombian branch of Aris Mining Corp.
Contractors
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Deposit Type
- Mesothermal
- Vein / narrow vein
Summary:
Gold mineralization at Segovia occurs in mesothermal quartz-sulfide veins hosted by a batholith. They have been classified as “Oxidized Pluton-Related Gold Deposits” (Sillitoe, 2008), are thought to have formed after the cooling of the batholith and may have a genetic relationship with the batholith as well as with the regional stress regime related to the Otú fault.
Gold mineralization at Segovia occurs in mesothermal quartz-sulfidic veins hosted by diorite to granodiorite rocks of the Segovia Batholith. The well-known, partially exploited veins dip at approximately 30° to the east or north-east. There are also a number of steeply dipping shear-zones hosting quartz veins with a N40W trend in the western part of the concession, termed the Las Verticales Veins System.
In general, the veins are formed of quartz with minor calcite and coarse-grained sulfides comprising pyrite, galena and sphalerite, and typically show a close spatial relationship with lamprophyre to adakite dykes. Gold and electrum occur as fine grains (<20 microns) and visible gold is generally common in the high-grade shoot sectors of the mines. Native silver has been reported. The wallrock alteration to the veins affects the basalt dykes and the granodiorite in a narrow zone a few meters wide with potassic (biotite), argillic (illite) and propylitic alteration most commonly encountered along with selective mineral replacement by chlorite, epidote, pyrite and calcite.
Gold ........

Mining Methods
- Pillar mining
- Resue mining
- Cut & Fill
- Room-and-pillar
Summary:
The Segovia operations are located in a historic mining district that has been mined for over 150 years. The majority of the mineralization has a dip of approximately 35°. The current mining methods used at the Segovia operations include room and pillar mining as well as cut and fill. Material is typically removed from the mine through use of an apique hoist system (angled hoisting system which follows the dip of the vein structure).
Current Room and Pillar Mining Method
Room and pillar mining consist of a primary and secondary phase. The primary phase mines a traditional room and pillar layout to a stated extraction ratio and the secondary phase extracts additional material from pillars.
Primary Mining
Primary mining applies a conventional room and pillar technique using manual mining methods. The panels are accessed from the overlying and underlying haulage levels as well as from down-dip development that breaks up the panels into discrete mining blocks. A loading chute from which the mined rock can be loaded into the materials handling system is constructed within the lower haulage level access. Sublevels are then developed horizontally along strike. A slusher is an air powered or electric scraper that is used to pull muck from the face back to the loading chute. Rooms between the sublevels are mined creating the room and pillar layout. The sublevels have an ore chute either at the end or middle of the panels. The layouts follow the typic ........

Source:

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Flow Sheet:
Summary:

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Production:
In addition to the material produced from the operating mines, Segovia also processes material from small-scale contract miners. In 2022, ore processed from Company-operated mines was 502,868 t and Contractor-operated mines was 108,898 t.
Commodity | Product | Units | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
Gold
|
Metal in doré
|
oz
| ...... ^ | ......  | ......  | ......  | ......  | 193,050 | 148,659 |
Silver
|
Metal in doré
|
oz
| | | ......  | ......  | ......  | ......  | |
Zinc
|
Metal in concentrate
|
lbs
| | | ......  | | | | |
Lead
|
Metal in concentrate
|
lbs
| | | ......  | | | | |
^ Guidance / Forecast.
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Operational Metrics:
Metrics | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
Daily milling rate
| ......  | ......  | 1,280 t | 1,237 t | 1,015 t | 762 t |
Daily milling capacity
| ......  | ......  | 1,500 t | | | |
Tonnes milled
| ......  | ......  | 468,598 t | 451,449 t | 370,406 t | 278,201 t |
Annual milling capacity
| ......  | ......  | 502 kt | | | |
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Reserves at December 31, 2022:
Mineral reserves are reported a cut-off grade of between 2.86 and 3.44 g/t Au depending on deposit, based on a gold price of US$1,7000 per ounce.
Mineral resources are reported using a cut-off grade of 2.65 g/t Au over a 1.0 m mining width, based on a gold price of US$1,850 per ounce.
Category | Tonnage | Commodity | Grade | Contained Metal |
Proven
|
229.3 kt
|
Gold
|
10.92 g/t
|
80.5 koz
|
Probable
|
2,132 kt
|
Gold
|
9.84 g/t
|
674.7 koz
|
Proven & Probable
|
2,361 kt
|
Gold
|
9.95 g/t
|
755.2 koz
|
Measured
|
405 kt
|
Gold
|
15.39 g/t
|
200 koz
|
Indicated
|
4,569 kt
|
Gold
|
10.16 g/t
|
1,492 koz
|
Measured & Indicated
|
4,974 kt
|
Gold
|
10.58 g/t
|
1,692 koz
|
Inferred
|
5,325 kt
|
Gold
|
9.44 g/t
|
1,616 koz
|
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