Overview
| Status | Care and Maintenance |
| Mine Type | Open Pit |
| Commodities |
|
| Mining Method |
|
| Production Start | ...  |
The Carahuacra Norte pit is part of the Yauli operating unit.
The Carahuacra Norte pit has been inactive since 2018. Currently, studies are being conducted to ensure a future use as tailings deposit. |
Source:
p. 13
Volcan Compañía Minera S.A.A. is a subsidiary of Glencore AG, which is a subsidiary of Glencore Plc., owner of 63% of common class A voting shares and an economic interest of 23%, excluding treasury shares.
Volcan Compañía Minera S.A.A. and its subsidiary companies engaged in the mining sector operate the mining unit of Yauli, which includes the Carahuacra Norte open pit mine.
In Q4 2022, Glencore commenced a process exploring the possible disposal of its 23.3% economic interest in Volcan.
Contractors
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Summary:
The Carahuacra deposit lies on the southwest flank of the Yauli anticline, formed by Tertiary folding. Manto ore, formed before the climax of the Andean orogeny, consists mainly of ferroan sphalerite and pyrite, with negligible chalcopyrite. These were later brecciated tectonically to form two zones of 'breccia ore'. The last phase of mineralization involved formation of epithermal cross veins with sphalerite, pyrite, galena, tetrahedrite, and jamesonite, and irregular cementation of fragments in the breccia ore by sphalerite-galena and pyrite-marcasite. Supergene alteration, particularly pronounced in the breccia zone, has formed ore much enriched in silver (native silver, argentite, pyrargyrite).
Summary:
The Carahuacra Norte Pit was halted in 2018.
Andaychagua's processing plant include grinding circuit consist of primary ball mills #1, 2 (10.5 'x 14', 8 'x 10') and secondary grinding ball mill (7’ x 12’).
Source:
Summary:
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Reserves at December 31, 2017:
| Category | Tonnage | Commodity | Grade |
|
Proven & Probable
|
758 kt
|
Zinc
|
2.56 %
|
|
Proven & Probable
|
758 kt
|
Lead
|
0.7 %
|
|
Proven & Probable
|
758 kt
|
Copper
|
0.01 %
|
|
Proven & Probable
|
758 kt
|
Silver
|
0.96 oz/t
|
|
Measured & Indicated
|
2,320 kt
|
Zinc
|
2.25 %
|
|
Measured & Indicated
|
2,320 kt
|
Lead
|
0.56 %
|
|
Measured & Indicated
|
2,320 kt
|
Copper
|
0.01 %
|
|
Measured & Indicated
|
2,320 kt
|
Silver
|
1.19 oz/t
|
|
Inferred
|
1,225 kt
|
Zinc
|
1.96 %
|
|
Inferred
|
1,225 kt
|
Lead
|
0.51 %
|
|
Inferred
|
1,225 kt
|
Copper
|
0.02 %
|
|
Inferred
|
1,225 kt
|
Silver
|
1.18 oz/t
|
Mine Management:
| Job Title | Name | Profile | Ref. Date |
|
.......................
|
.......................
|
|
May 27, 2023
|
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