Overview
| Stage | Production |
| Mine Type | Open Pit |
| Commodities |
|
| Mining Method |
|
| Production Start | ...  |
| Mine Life | 2038 |
The Mission Complex, an open-pit mine composed of the Mission, Eisenhower, Pima, Mineral Hill and South San Xavier properties and the nearby North San Xavier mine. Additionally, there are two concentrators: Mission Molienda Norte and Molienda Sur. |
Source:
p. 11,54
The Mining Division of Grupo Mexico, S.A. de C.V. (GMéxico) is controlled by Americas Mining Corporation (AMC) which operates the United States subsidiary - Asarco LLC (Asarco).
Asarco LLC includes the Mission, Ray and Silver Bell Arizona mines.
Contractors
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Summary:
The Mission deposit is a porphyry copper skarn deposit located southwest of the city of Tucson in Pima County, Arizona. A series of Paleozoic sedimentary rocks.
Mineralization is a skarn-related copper porphyry deposit with seams and disseminations of copper carbonates and sulfides with minor zinc, lead and molybdenum minerals in a pyrometasomatic deposit in altered, complexly folded, and faulted Paleozoic limestone and Triassic sedimentary and volcanic formations intruded by Laramide and Tertiary intrusives. There is a thin secondary enrichment zone. The host rock unit is the Scherrer Formation.
A series of Paleozoic sedimentary rocks, dominated by carbonate, are folded, faulted, and fully inverted. These rocks have an overlying unconformable thick section of fine-grained Mesozoic clastic rock. A tabular body of laramide quartz monzonite porphyry invades the sedimentary sequence. Intrusion-related hydrothermal fluids alter and mineralize the host rock as well as the quartz monzonite porphyry. The result is a series of interbedded skarns and altered siliceous rocks with variable alteration and sulfide mineralogy, which are controlled by the original rock lithology.
About 26 million years ago, the deposit moved laterally about 10.5 kilometers from the Twin Buttes area to its present location on a larger low-angle structure. As a consequence, the deposit partially eroded, failed, and was covered with 61 meters of alluvial soil.
Summary:
The Mission Complex, an open-pit mine composed of the Mission, Eisenhower, Pima, Mineral Hill and South San Xavier properties and the nearby North San Xavier mine.
The Mission Complex currently consists of an open pit copper and molybdenum mine that involves drilling, blasting, loading and haulage activities to both waste rock and crushers. The waste rock is not processed further.
The Mission mine is approximately 3.2 km wide, 4 km long and 427 m deep.
Source:
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Source:
Summary:
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Production:
| Commodity | Product | Units | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 |
|
Copper
|
Metal in concentrate
|
kt
| ...... | ...... | ...... | ...... | 44 | 62 | 68 |
|
Copper
|
Concentrate
|
kt
| ...... | ...... | ...... | ...... | 179 | 204 | 271 |
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Operational Metrics:
| Metrics | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
|
Daily milling capacity
| ...... | ...... | 47.4 kt | 46.3 kt | 46.3 kt | 53.3 kt |
|
Stripping / waste ratio
| ...... | ...... | 1.57 | 1.83 | 2.22 | 2.01 |
|
Ore tonnes mined
| ...... | ...... | 16,549 kt | 15,099 kt | 16,902 kt | 17,385 kt |
|
Total tonnes mined
| ...... | ...... | 42,589 kt | 42,736 kt | 54,445 kt | 52,292 kt |
|
Tonnes milled
| ...... | ...... | 16,549 kt | 15,099 kt | 16,902 kt | 17,385 kt |
|
Daily mining rate
| ...... | ...... | 144,000 t | 144,000 t | 144,000 t | 144,000 t |
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Reserves at December 31, 2022:
Cut-off grade 0.190% Cu
| Category | Tonnage | Commodity | Grade | Contained Metal |
|
Proven & Probable
|
204,157 kt
|
Copper
|
0.406 %
|
829 kt
|
Source:
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Heavy Mobile Equipment as of December 31, 2022:
| HME Type | Size |
|
Truck (haul)
|
290 t
|
Corporate Filings & Presentations:
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