Overview
Status | Care and Maintenance |
Mine Type | Open Pit |
Commodities |
|
Mining Method |
|
Production Start | ... |
Mine Life | 2027 |
In the first quarter of fiscal 2020 the Orvana made a decision to temporarily suspend mining and milling operations at Don Mario. Since then, Don Mario continues in care and maintenance, transitioning to the Oxides Stockpile Project, consisting of a plant expansion to treat ore stockpiled from previous years of mining activity. The Oxides Stockpile Project is projected to operate for 35 months, starting after a 13-month construction period that the Company expects to start in the first quarter of 2024, subject to the completion of the financing.
The Orvana Minerals is also evaluating the potential reprocessing of tailings accumulated in the Don Mario Tailings Storage Facility (TRP).
Processing the oxides stockpile, plus the tailings reprocessing could add 6-7-year of mine life to Don Mario, allowing for exploration opportunities. |
Latest News | Orvana's Subsidiary Provides Notice Of Its Proposed Bonds Offering In Bolivia February 21, 2024 |
Source:
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Company | Interest | Ownership |
Orvana Minerals Corp.
|
100 %
|
Indirect
|
Empresa Minera Paititi S.A.
(operator)
|
100 %
|
Direct
|
Through its wholly-owned subsidiary, Empresa Minera Paititi S.A. (“EMIPA”), the Orvana Minerals owns and operates Don Mario Operation.
Contractors
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Deposit Type
- IOCG
- Vein / narrow vein
- Tailings
Summary:
DEPOSIT TYPES
The deposit was more recently classified by Arce-Burgoa and Goldfarb (2009), as being a deformed example of the Iron Ore Copper Gold (IOCG) association.
The two main deposits types present on the Don Mario Property are exemplified by the copper-dominated UMZ deposit that shows direct association with a large calc-silicate zone, and the gold-dominated LMZ deposit that occurs beneath the UMZ and shows direct association with shear-focused silicification, calcsilicate, potassic, and iron oxide alteration. The Las Tojas and Cerro Felix deposits are similar in style and association with the LMZ, but no substantive additional examples of the UMZ style have been identified on the Property to date.
Tailings Storage Facility (TSF)
Tailings are not a “deposit type” in the conventional sense but in this case, for the purposes of considering Don Mario’s TSF content a Mineral Resource, they are described as an accumulation of loose material with grain size finer than sand, mainly composed by silt size material and less than 20% of clays. The tailings material humidity can vary from 20.8% to 51.4% (Sanchez et al., 2018).
The executed laboratory tests evidence that the tailings can be grouped into fine tailings and coarse tailings, classified respectively as silty sands and silts with low plasticity with the following characteristics:
- The coarse tailings, classified as silty sands, have a field density of 1.468 g/cm3 to 1.712 ........
Summary:
The Don Mario Property currently does not have any in-situ Mineral Resources or Mineral Reserves. The only Mineral Resources or Mineral Reserves currently on the Property are hosted in five of the six oxide stockpiles and in the tailings contained within the TSF.
Tailings Reprocessing Project (TRP)
No mining plan is presented for the TRP because it is not sufficiently advanced for the development of a mining plan.
Oxide Stockpiles
The planned mining method for the oxide stockpiles consists of loading conventional end dump trucks with either a wheel loader or an excavator on a mucking schedule from various oxide stockpiles, in order to achieve the desired plant feed blend after haulage from stockpile locations to the crusher area. The goal is to obtain an average blending of Au, Cu an Ag grades with oxide gangue minerals that will ensure optimal metal recoveries.
Loading and transportation activities are planned for daily 12 hour shifts. The Company targets delivering a monthly average of 59,000 tonnes to the blended stockpile. The blended ore will come all thee various OSPs and be blended to achieve the proper mix of grade and oxidized gangue minerals to maximize recoveries. The Company expects full production to take a four month ramp up period.
Source:
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Flow Sheet:
Summary:
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Source:
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Production:
Don Mario is in care and maintenance since the first quarter of fiscal 2020.
Commodity | Product | Units | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
Gold
|
Metal in doré
|
oz
| ...... | ...... | 45,125 | 38,746 | | |
Copper
|
Metal in concentrate
|
k lbs
| | | ...... | ...... | ...... | ...... |
Silver
|
Metal in doré
|
oz
| | | | ...... | | |
Gold
|
Metal in concentrate
|
oz
| | | | | 21,102 | 19,084 |
Silver
|
Metal in concentrate
|
oz
| | | | | ...... | ...... |
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Operational Metrics:
Metrics | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
Daily milling rate
| ...... | 2,185 dmt | 2,188 dmt | 2,088 dmt | 2,436 dmt | 2,532 dmt |
Ore tonnes mined
| ...... | 745,846 dmt | 856,018 dmt | 718,692 dmt | 679,512 dmt | 938,492 dmt |
Tonnes milled
| ...... | 739,635 dmt | 719,328 dmt | 668,376 dmt | 806,187 dmt | 837,722 dmt |
Daily processing capacity
| ...... | | | | 2,600 dmt | |
Reserves at September 30, 2022:
The Mineral Resources and Reserves as at September 30, 2023 are unchanged from September 30, 2022.
Indicated and Inferred: Highlighted Base Case Au 0.3 g/t Cutoff considered for mine life.
Mineral Resources are reported inclusive of Mineral Reserves.
Category | OreType | Tonnage | Commodity | Grade | Contained Metal |
Proven
|
Stockpiles
|
2,032 kt
|
Gold
|
1.85 g/t
|
120.9 koz
|
Proven
|
Stockpiles
|
2,032 kt
|
Copper
|
1.89 %
|
38,438 t
|
Proven
|
Stockpiles
|
2,032 kt
|
Silver
|
49.3 g/t
|
3,221 koz
|
Measured
|
Stockpiles
|
2,184 kt
|
Gold
|
1.84 g/t
|
129 koz
|
Measured
|
Stockpiles
|
2,184 kt
|
Copper
|
1.89 %
|
41,283 t
|
Measured
|
Stockpiles
|
2,184 kt
|
Silver
|
1.89 g/t
|
41,283 koz
|
Indicated
|
Tailings
|
4,422 kt
|
Gold
|
0.44 g/t
|
|
Indicated
|
Tailings
|
4,422 kt
|
Copper
|
0.5 %
|
|
Indicated
|
Tailings
|
4,422 kt
|
Silver
|
4.83 g/t
|
|
Inferred
|
Tailings
|
1,671 kt
|
Gold
|
0.45 g/t
|
|
Inferred
|
Tailings
|
1,671 kt
|
Copper
|
0.38 %
|
|
Inferred
|
Tailings
|
1,671 kt
|
Silver
|
3.53 g/t
|
|
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