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Mexico
Aranzazu Mine

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 Location:
13 km SE from Mazapil, Zacatecas, Mexico

  Address:
Arroyos Azules No. 24 Ejido Aranzazu
Concepción Del Oro
Zacatecas, Mexico
98200
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Copper
  • Gold
  • Silver
Mining Method
  • Sub-level open stoping (SLOS)
  • Transverse stoping
  • Longitudinal stoping
  • Cemented backfill
Production Start...
Mine Life7 years (as of Jan 1, 2020)


Owners

Source: p. 16,20
CompanyInterestOwnership
Aura Minerals Inc. 100 % Indirect
Aranzazu Holding S.A. de C.V. (operator) 100 % Direct
Aura Minerals holds the Aranzazu Property indirectly through its 100% owned subsidiary Newington Corporation S.L. (Newington) which, in turn, holds 100% of the Aranzazu Property through its Mexican subsidiary Aranzazu Holding S.A. de C.V. (Aranzazu Holding).
Aranzazu Holding S.A. de C.V. (“Aranzazu Holding”), the operating entity for the Aranzazu Mine.

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Porphyry
  • Skarn


Summary:

The Concepcion Del Oro district represents a porphyry copper deposit that has been eroded down to a relatively deep level, as evidenced by the outcropping skarn alteration. Skarn alteration is barren unless the skarn is overprinted by the later porphyry style alteration marked by propylitic, phyllic and potassic alteration types. Trace metal geochemistry supports the classification of Concepcion del Oro as a porphyry deposit. Strongly anomalous bismuth, tellurium, arsenic and antimony are present and are typical trace metal assemblages associated with porphyry copper deposits. This trace metal assemblage is most anomalous in areas of phyllic and potassic alteration.

The mineralization in Aranzazu has a strike length of 1.5 km, a width of up to 250 m and depth extents up to 600 m. The Aura Minerals’ exploration and definition drilling shows that mineralization is closing off at BW, Mexicana and AA but open at depth in Glory Hole Porfido zone. The deepest drilling conducted to date was carried out by Aura Minerals indicated the presence of strong copper mineralization at an elevation of 1,500 m, or 600 m below surface.

Copper, gold and silver mineralization occurs in a porphyry alteration assemblage related to the intrusion of an igneous rock complex consisting of quartz monzonitic to granodioritic rocks. The igneous rocks have intruded a sequence of Jurassic to Cretaceous limestones and siltstones. The sedimentary rocks have undergone contact meta ........


Mining Methods

  • Sub-level open stoping (SLOS)
  • Transverse stoping
  • Longitudinal stoping
  • Cemented backfill


Summary:

The Aranzazu underground mine is accessed by two portals which are near the processing plant. Main ramps, driven at 5m high by 5m wide wide at a gradient of approximately 15% are used to access the underground workings. For the re-start plan, two (2) new ramps are designed to access the GHFW and GHHW zones. Ramps are designed at the same dimensions, with an average gradient of approximately 14.2%.

Mining will be carried out using the Sub-Level Open Stope (SLOS) mining method to extract the ore. Stopes will be extracted in a transverse method (perpendicular to the strike of the orebody) using a primary/secondary stope configuration. In this mining method, haulage galleries are developed parallel to the ore zones on each production level as defined by the sub- level interval. Sub-level intervals are designed between 25 to 30 meters to minimize the amount of waste development on the sublevels. While the majority of the stopes will be mined transverse, there are some areas that will allow the ore to be extracted in a longitudinal approach. Stopes are to be filled with cemented rockfill for primary and uncemented waste material for secondary stopes.

The sequence for both development and production activities was developed and the appropriate rates and production targets were applied to achieve the required schedule of activities. During the first year, development will focus on the GHFW ramp and level development, as well as establishing access to the ex ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityProductUnits20222021202020192018
Gold Equivalent Metal in concentrate koz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required
Copper Metal in concentrate M lbs  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Copper Concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Gold Metal in concentrate oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver Metal in concentrate oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Copper Equivalent Metal in concentrate k lbs  ......  Subscription required  ......  Subscription required
^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics2021202020192018
Ore tonnes mined  ......  Subscription required  ......  Subscription required760,789 t153,129 t
Tonnes milled  ......  Subscription required  ......  Subscription required815,952 t146,151 t
Subscription required - Subscription is required.

Reserves at December 31, 2021:
Mineral Resources stated at a cut-off of US$45/t NSR.

Mineral Reserve: the NSR cut-off US$57/t is based on the total predicted operating cost.

CategoryTonnage CommodityGradeContained Metal
Proven & Probable 6,393 kt Copper 1.38 % 194,996 k lbs
Proven & Probable 6,393 kt Gold 0.97 g/t 200 koz
Proven & Probable 6,393 kt Silver 18.82 g/t 3,868 koz
Measured & Indicated 11,541 kt Copper 1.54 % 392,335 k lbs
Measured & Indicated 11,541 kt Gold 1.14 g/t 424 koz
Measured & Indicated 11,541 kt Silver 21.93 g/t 8,137 koz
Inferred 4,236 kt Copper 1.32 % 123,705 k lbs
Inferred 4,236 kt Gold 0.94 g/t 128 koz
Inferred 4,236 kt Silver 16.33 g/t 2,224 koz

Commodity Production Costs:

CommodityUnits2022202120202019Average
Cash costs (sold) Gold Equivalent USD  ......  Subscription required&nbs
Cash costs Copper Equivalent USD  ......  Subscription required  ......  Subscription required
Cash costs Gold Equivalent USD  ......  Subscription required  ......  Subscription required
Cash costs Copper USD  ......  Subscription required 2.82 / lb  
Cash costs Copper USD 2.09 / lb†  
^ Guidance / Forecast.
† Net of By-Product.
Subscription required - Subscription is required.

Financials:

Units2021202020192018
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 17.3  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 2.3  
Operating Income M USD  ......  Subscription required  ......  Subscription required
Pre-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 53  
After-tax Income M USD  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required



Proposed Heavy Mobile Equipment as of January 31, 2018:
HME TypeModelSizeQuantityLeased or
Contractor
Drill (long hole) ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Aug 17, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 17, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 17, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 17, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 17, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 17, 2022
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2021
Subscription required 2020
Subscription required 2019
Subscription required 2015

Corporate Filings & Presentations:

DocumentYear
Other 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Information Form 2018
Feasibility Study Report 2018
Financial Review 2018
Management Discussion & Analysis 2018
Press Release 2018
Management Discussion & Analysis 2017
Management Discussion & Analysis 2015
Management Discussion & Analysis 2015
Preliminary Economic Assessment 2015
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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