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Bolivia

Caballo Blanco Complex

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Overview

Mine TypeUnderground
StatusActive
Commodities
  • Silver
  • Zinc
  • Lead
Mining Method
  • Cut & Fill
  • Sub-level stoping
  • Avoca
  • Shrinkage stoping
  • Longhole stoping
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SnapshotCaballo Blanco Complex consists of the Colquechaquita, Reserva and Tres Amigos mines, which supply the central Don Diego plant. There is a 60 km drive from the mines to the Don Diego Processing plant.

An important capital project for 2023 was the integration ramp connecting the Tres Amigos mines and Colquechaquita mines, which was completed in early 2024. This is expected to facilitate increased productivity from Colquechaquita mine and total production from the Caballo Blanco Group of mines by providing trackless access to Colquechaquita and eliminating the bottleneck created by the current shaft.
Related Asset

Owners

SourceSource
CompanyInterestOwnership
Santacruz Silver Mining Ltd. 100 % Indirect
Sinchi Wayra S.A. (operator) 100 % Direct
On March 18, 2022, the Santacruz Silver Mining acquired 100% ownership of Sinchi Wayra S.A. from Glencore plc.

Sinchi Wayra S.A. owns and operates Caballo Blanco mines.

Contractors

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Deposit type

  • Epithermal
  • Vein / narrow vein

Summary:

The Caballo Blanco zinc, silver, lead mine, situated south of Potosi, is located in the Jayaquila – Victoria corridor, a 5-7 km north-south structural zone with three sectors, from north to south, the Colquchaquita, Reserva, and Tres Amigos mines. They are not described in the published literature. They are hosted by volcanic rocks of the Kari-Kari volcanic complex, with dimensions of 32 km north-south and 12 km wide, located on the SE side of the Los Frailes felsic volcanic field that covers an area of 8,500 km2 at altitudes of 4,000 – 5,200 masl. The history started with intrusion of small granitoids at about 25 Ma at Kumurana, at the southern end of the Kari massif, and Azanaques. These were followed by the formation of Kari at about 20 Ma that is interpreted to be a resurgent caldera with welded ignimbrite fill. Ash flows, domes and stocks formed in the Cebadillas episode at 17-10 Ma, including the Cerro Rico dome with Ag-Sn mineralization at 13.8 Ma (Zartman & Cunningham, 1995; Cunningham et al., 1996; Rice et al., 2005).

The rocks of the Kari complex are felsic, peraluminous, and rich in garnet, cordierite and tourmaline (Schneider, 1987).

Mineralization in its generality is characterized by being housed in philonian structures divided into three domain orientations:

1. Oriented at N 10° to 20° E, are Colquechaquita (Karina, Viviana, Camila), and some veins of Tres Amigos (Catalina, Milagros Este and Central);

2. Oriented N 10° to 30° W°; Reserve veins (Rosario, Wendy, Juanita and Blanquita), in Tres Amigos there is also within this system the vein (Ramo Catalina); and

3. Corresponding to veins of the Porvenir sector where they have an N-S orientation, corresponding to Reserva (Veta Rosita) and in Tres Amigos (Milagros veins).

General mineralogy is composed of quartz-pyrite-chalcopyrite and marmatite, sphalerite, galena, boulangerite (Tres Amigos) as primary minerals; as accessory minerals we have siderite, calcite and ankerite at the trace level.

The mineralogy is quartz, pyrite, chalcopyrite, marmatite, sphalerite, galena and boulangerite with minor siderite, calcite and ankerite.

Reserves

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Mining Methods

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Comminution

Crushers and Mills

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Processing

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Production

CommodityUnits202320222021
Silver oz  ....  Subscribe  ....  Subscribe
Zinc t  ....  Subscribe  ....  Subscribe
Lead t  ....  Subscribe  ....  Subscribe
Silver Equivalent koz  ....  Subscribe  ....  Subscribe  ....  Subscribe
All production numbers are expressed as metal in concentrate.

Operational metrics

Metrics20232022
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Production Costs

Commodity production costs have not been reported.

Financials

Units20232022
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Heavy Mobile Equipment

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Personnel

Mine Management

Job TitleNamePhoneProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jul 18, 2024
....................... Subscription required ....................... Subscription required Subscription required Jul 19, 2024
....................... Subscription required ....................... Subscription required Subscription required Jul 18, 2024
....................... Subscription required ....................... Subscription required ........... Subscription required May 31, 2024
....................... Subscription required ....................... Subscription required Subscription required Jul 18, 2024

EmployeesContractorsTotal WorkforceYear
...... Subscription required ...... Subscription required ...... Subscription required 2019

Aerial view:

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