Mining Intelligence and News

El Mochito Mine

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Mine TypeUnderground
  • Zinc
  • Lead
  • Silver
Mining Method
  • Cut & Fill
  • Longhole stoping
Production Start... Lock
Mine Life... Lock
SnapshotThe main infrastructure El Mochito Mine consists of a shaft-accessed underground El Mochito mine and a processing plant that produces separate zinc and lead concentrates. Silver, a by-product of the lead and zinc concentrate is sold as percent silver concentrate.

The El Mochito mine has benefited from significant reinvestment including new mining equipment, new flotation cells and a new shaft currently under construction.

El Mochito mine sold to Kirungu Corporation on April 27, 2020.

Kirungu Corporation is a private equity precious and base metals producer.

No production data has been available since then.
Related AssetEl Mochito Expansion Project


Kirungu Corp. 100 % Indirect
On April 27, 2020, Ascendant Resources Inc. has completed the sale of its wholly-owned Honduran subsidiary American Pacific Honduras S.A. de C.V., the 100% owner of the El Mochito zinc mine, to Kirungu Corporation.

Kirungu Corporation is a private equity precious and base metals producer.



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Deposit type

  • Skarn


Zinc-lead-silver mineralization of economic interest at El Mochito occurs in association with calc-silicate bearing skarn intervals hosted by limestone and calcareous shale of the Upper and Lower Atima Formation, in calcareous units of the Atima Formation’s main subunit, the Mochito Shale, in calcareous siltstone and shale of the Cantarannas Formation and in quartz rich sandstones and siltstones of the siliciclastic-dominated Todos Santos Formation, which underlies the Cantarannas Formation. The stratigraphic section within which economic mineralization occurs at El Mochito slightly exceeds 1,250 m in true thickness.

Mineralization consisting of sphalerite, galena, argentite, tetrahedrite, acanthite, pyrrhotite and magnetite is associated with garnet and pyroxene skarn zones that are both structurally and stratigraphically controlled. The distribution of skarn directly reflects the geometry of the complex graben-related fault systems that channeled hot hydrothermal fluids through graben fill sequences to sites where they selectively reacted with calcareous wall rock to create siliceous, garnet and pyroxene dominated skarn. Introduction of zinc-lead-silver mineralization on existing skarn zones reflects continued capacity of the graben’s fault systems to conduct the large volumes of hydrothermal fluid necessary to create this district’s high metal endowment.

Two main styles of zinc-lead-silver mineralization are present at El Mochito, these being mantos and chimneys, both of which show genetic association with hydrothermal fluidcontrolling fault systems. The largest mantos occur as stratabound replacement zones within the Lower Atima Formation, near its lower contact with the calcareous Cantarannas Formation. Manto style mineralization is also encountered in the central portion of the Atima Formation, along the upper and lower contacts of the Mochito Shale unit, typically adjacent to large chimney structures, and also within quartz rich clastic sediments of the Todos Santos Formation.

Chimney-style mineralization occurs as pipe-like accumulations of sulphides and associated skarn assemblages that are discordant to stratigraphy, often at high angles, and are spatially controlled by discrete zones of structural ground preparation which typically coincide with fault intersection zones or with dilational zones related to orientation changes or transfer zones along strike slip or dip slip fault systems. Chimneys at El Mochito are frequently rooted in zones of well-developed manto mineralization at the base of the Atima Formation and extend upward through that formation for substantial vertical intervals, with some passing through the Mochito Shale and onward to near surface elevations.

Manto and chimney deposits differ in their metal grade characteristics, with higher zinc lead and silver values and massive to submassive sulphide zones being more commonly seen in chimneys.



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Mining Methods


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Crushers and Mills


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CommodityProductUnits2021 *2020 *20192018201720162015
Silver Payable metal koz  ....  Subscribe  ....  Subscribe981701489
Zinc Metal in concentrate M lbs 6463453251
Lead Payable metal M lbs 262114
Lead Metal in concentrate M lbs 2722158.822
Silver Metal in concentrate koz 1,4011,0026995671,105
Zinc Equivalent Payable metal M lbs 907856
Zinc Equivalent Metal in concentrate M lbs 1069166
Zinc Concentrate kt 2745
Lead Concentrate kt 615
* Average annual production reported in 2020

Operational metrics

Ore tonnes mined 794,690 t758,067 t657,287 t
Tonnes milled 775,559 t756,034 t656,291 t470 kt756 kt
Daily milling rate 2,154 t1,889 t1,409 t
Daily milling capacity 2,300 t2,300 t2,300 t2,300 t
Annual milling capacity 840 kt

Production Costs

Cash costs (sold) Zinc Equivalent USD 0.7 / lb   0.79 / lb   1.05 / lb  
All-in sustaining costs (sold) Zinc Equivalent USD 1.14 / lb   1.31 / lb   1.62 / lb  

Operating Costs

Direct operating costs ($/t milled) USD 82.6  79  88.2  


Capital expenditures M USD 15.6   21.9   13.4  
Revenue M USD 77.8   85.6   59.2  
Operating Income M USD 5.6   11.5  
After-tax Income M USD -8.2   3   -12.1  
EBITDA M USD 7.8   13.5   2.5  
Operating Cash Flow M USD 7.7   16.3   -6.5  

Heavy Mobile Equipment


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Mine Management

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 5, 2023
....................... Subscription required ....................... Subscription required Subscription required Oct 5, 2023
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...... Subscription required ...... Subscription required 2018

Aerial view:


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