Mining Intelligence and News

Callanquitas (Igor) Project

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Mine TypeUnderground
  • Gold
  • Silver
Mining Method
  • Cut & Fill
  • Drift & Fill
Backfill type ... Lock
Mine Life... Lock
SnapshotThe Igor Project includes the Callanquitas structure (the “Igor 4 concession”), where the PPX Mining has been conducting an underground operation through current mining partner.

The PPX Mining had planned to build a heap leach processing plant. As at September 30, 2023, the PPX Mining will no longer proceed with the construction of the heap leach facility, but will instead construct a plant more suited to the type of ore contained in the Callanquitas deposit that will allow higher recoveries, based on new data obtained from test work.

As of February 15, 2024, PPX Mining received approval for the IGOR Project's beneficiation plant. This approval constitutes the acceptance of the F1 environmental portion of the permitting application that will allow the PPX Mining to build its CIL and Flotation processing plant at site. The PPX Mining is in the process of submitting the final detail engineering portion (F2) to complete its permitting process and start plant construction.
Related AssetCallanquitas


PPX Mining Corp. 100 % Indirect
PPX (PPX Mining Corp.), through its subsidiary Sienna Minerals S.A.C., has a 100% interest in the Igor Project.



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Deposit type

  • Epithermal
  • Breccia pipe / Stockwork
  • Vein / narrow vein
  • Manto
  • Porphyry


The Igor property encompasses three exploration targets: Portachuelos, Domo, and Tesoros.

Field evidence suggests that the Igor project mineralization belongs to the epithermal type of gold-silver deposit.

The setting, alteration, and mineralization characteristics of the Callanquitas deposit are consistent with an intermediate to high-sulfidation epithermal system (Hedenquist et al., 2000). The deposit lacks the characteristic enargite, vuggy residual quartz, and alunite of the high-sulfidation systems and does not have the adularia diagnostic of the low-sulfidation systems.

The Igor project mineralization occurs within mineralized structural breccias that originally contained variable quantities of pyrite, arsenopyrite, and minor chalcopyrite. These sulfide minerals were subsequently strongly oxidized to significant depths.

Igor project mineralization occurs within four primary target areas: Callanquitas, Domo, Tesoros, and Portachuelos. Mineralization within the property often occurs at the transition zone from Chimú up into the Santa and Carhuaz rocks. There is a spatial association of dacite porphyry dikes emplaced within structural breccias with both structural and manto-style mineralization.

Callanquitas Veins
The Callanquitas veins (Callanquitas Este, Callanquitas Oeste and Cianuro) occur within a north-south striking zone of multiple, anastomosing to divergent faults that extend over a length of 2,400 meters. Individual veins can be up to 1.5 km long with thicknesses between 0.2 to 8.2 meters. The Callanquitas structures are open along strike to the south and north, and at depth.

The Callanquitas mineralization is considered an intermediate-sulfidation type, consisting of mineralized structural breccias that originally contained variable quantities of pyrite, arsenopyrite, and minor chalcopyrite. These sulfide minerals were subsequently strongly oxidized to significant depths. The primary mineralized structures (Callanquitas Este and Oeste structures) are nearly vertical, but steep westerly dips are common.

The structures cut through a sequence of sandstone, siltstone, and quartzite. The silicified sandstone and quartzite units were more amenable to brecciation, and therefore more favorable for migrating hydrothermal fluids and mineralization. The dacite intrusive rocks are generally argillically-altered, and although the mineralized structures cut through the dacite, the general lack of brecciation and development of open-space renders the intrusions a poor host for mineralization.

Drilling indicates that mineralization in the Callanquitas Este and Oeste veins occurs over a 1,400 meters north-south strike length, and extends to depths of up to 500 meters below the topographic surface. Oxidation within the mineralized structures occurs to depths of 200 to 300 meters below surface. Ag/Au ratios are generally low (about 10:1) in the oxide portion of the deposit but can increase to over 100:1 at the oxide-sulfide interface. The change in Ag/Au ratios is not just related to supergene enrichment, but also represents the occurrence of late- stage, silver-rich, silica-sulfide veinlets which cut the more gold-rich hydrothermal breccias.

Domo mineralization occurs within a zone of bedded-parallel mantos and perpendicular veins along the crest of the southeast end of the Igor Anticline. Gold and silver mineralization is controlled by a series of northeast-southwest trending faults and occurs as oxidized pyritic breccias with variable silicification. The exploration program demonstrated that gold and silver mineralization are often present in mineable grades when a feeder system (vein, pebble dyke etc.) intersects the axial area of a significant anticlinal fold. This type of event resulted in mineralization in the Tesoros saddle reef / mantos. These tectonic conditions also resulted in mineralization at the Domo zone in the topographically highest area of the Igor Concession which is clearly evident in the extensive artisanal workings. Nine shallow (<50 meters) holes were drilled into this zone in 2007. Due to the friable nature of the manto material the first two drillholes, they did not have sufficient core recovery to be useful in making a resource estimate.

The Domo mineralized zone consists of five (5) NNE striking veins, three (3) of which can extend for 1.2 Km. Between 2006 and 2018, thirteen (13) diamond drillholes totalling 1907.78 meters were completed in the Domo zone. In the past, Hole DO-05 has intersected 12.6 g/t Au and 303.1 g/t Ag over 2.8 m.

Tesoros mineralization consists of gold and silver-bearing veins, breccias, and mantos along a major north-northeast striking fault that has localized the emplacement of dacitic porphyries and pebble Dykes.

The Tesoros fault/brecia zone contains an epithermal, high sulfidation mineralized deposit hosted in brecciated Chimu sandstones. The zone contains occurrences of high-grade mineralization. The previous drill program has shown that the breccia zone was cut off by the transverse fault and that the boiling zone of the hydrothermal fluids did not extend below the 3100-meter elevation.

Portachuelos lies along the southern extension of the Callanquitas structural zone in an area where the north-south Callanquitas structure, and the northeast-trending Domo structures, and trend to the south and southwest into the western portion of the Huevo de Condor dacite porphyry stock. It is an early-stage exploration target.



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Mining Methods


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Crushers and Mills


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Combined production numbers are reported under Callanquitas

Operational metrics

Daily ore mining rate  ....  Subscribe
Daily processing capacity  ....  Subscribe
* According to 2023 study.

Production Costs

Commodity production costs have not been reported.

Required Heavy Mobile Equipment


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Mine Management

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Dec 3, 2018
....................... Subscription required ....................... Subscription required Subscription required Dec 3, 2018
....................... Subscription required ....................... Subscription required Subscription required Jul 10, 2024

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