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Mexico
Arista Mine (Don David Operation)

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 Location:
3 km N from Quiechapa, Oaxaca, Mexico

  Regional Office:
Calle Las Rosas 339, Col. Reforma
Oaxaca De Juárez
Oaxaca, Mexico
68050
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  • Overview
  • Owners
  • Geology
  • Mining
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  • Production
  • Reserves
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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Gold
  • Silver
  • Copper
  • Zinc
  • Lead
Mining Method
  • Overhand Cut & Fill
  • Longhole open stoping
  • Cemented backfill
  • Dry waste backfill
Production Start...
Latest NewsGold Resource Corporation Reports Results of Operations for the Year-Ended December 31, 2022     March 2, 2023


Owners

Source: p. 327
CompanyInterestOwnership
Gold Resource Corp. 100 % Indirect
Gold Resource operations in Oaxaca are conducted through its Mexican subsidiary, Don David Gold Mexico S.A. de C.V. (“DDGM”).

Gold Resource currently has 100% interest in ten properties in the Americas. Six of its properties, including two Operating Properties and four Exploration Properties, are within Oaxaca Mining Unit located in Oaxaca, Mexico, along the San Jose structural corridor.

Contractors

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Deposit Type

  • Vein / narrow vein
  • Epithermal
  • Volcanic hosted


Summary:

The DDGM area is predominantly volcanic rocks of presumed Miocene age, which overlay and intrude into basement rocks consisting of marine sediments. This district's gold and silver mineralization is related to the volcanogenic system and is considered epithermal in character. The DDGM mineralization occurs as structurally controlled epithermal deposits in veins and stockwork zones. The mineralization is associated with gangue minerals such as quartz, calcite, and other minor elements. Primary sulfide mineralization consists of pyrite galena, sphalerite, chalcopyrite, and different minor amounts of argentite and silver sulfosalts. It consists of concentrations of sulfides containing gold, silver, lead, copper, and zinc.

DDGM exploration efforts have been mainly focused on the Arista Project, which contains the Manto Vein, Arista, and Switchback vein deposits, and includes the significant Arista, Baja, and Soledad veins as well as multiple ancillary structures. The principal hosts of mineralization are the Arista and Switchback vein systems, known from drilling and underground workings in the Arista underground mine. The Switchback deposit is approximately 500 m northeast of the Arista deposit. Both vein systems are andesitic host rocks, rhyolite dikes, and structural contacts with the basement sedimentary rocks. The mineralization in these systems is intermediate sulfidation with precious and base metals at economic grades. Both vein systems trend northwesterly; alt ........


Mining Methods

  • Overhand Cut & Fill
  • Longhole open stoping
  • Cemented backfill
  • Dry waste backfill


Summary:

Substantial development was undertaken from 2010-2011 to access the Mineral Resources of the Arista vein system and to provide ancillary access for further exploration and development. In addition, a significant amount of mining on the Arista vein system was achieved to determine the “mineability” of the orebody and to optimize an extraction method(s) for mining the mineralized zones. The principal exploration access and haulage decline ramp were opened at surface positioned along Aire Creek. The portal opening is located at an elevation at 902 (masl) accessing the mineralized area of the Arista vein system. The decline was driven as a spiral with a minus 10 percent grade in the footwall of the mineralized area. Underground mine planning and exploitation is based on a typical vertical separation of mine levels of approximately 20m.

To date, DDGM has advanced the primary decline ramp down to Level 28, approximately 4,400 meters ramp distance from the mine portal. DDGM has also constructed a safety/ventilation decline ramp in conjunction with the primary decline ramp along with various drifts, raises and stopes encompassing approximately 500 m vertically and 1,300 m along strike length.

There are two main mining methods used in the Arista mine: 1) overhand mechanized cut and fill (CAF) and 2) long-hole open stoping (LHOS) with delayed fill. Paste fill, cemented rock fill and uncemented rock fill are applied to long-hole stoping areas in order to increase ........


Crushing and Grinding


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits201620152014
Gold oz 27,62829,64435,552
Silver oz  ......  Subscription required  ......  Subscription required  ......  Subscription required
Copper t  ......  Subscription required  ......  Subscription required  ......  Subscription required
Zinc t  ......  Subscription required  ......  Subscription required  ......  Subscription required
Lead t  ......  Subscription required  ......  Subscription required  ......  Subscription required
Gold Equivalent oz  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as metal in concentrate.

Operational Metrics:

Metrics202120202019201820172016
Tonnes milled  ......  Subscription required  ......  Subscription required629,868 t560,191 t400,748 t450,221 t
Daily milling rate  ......  Subscription required  ......  Subscription required1,301 t1,295 t
Daily milling capacity  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Reserves at December 31, 2021:
A breakeven NSR cutoff grade of $88/t was used for estimations of mineral reserves and resources at the Arista Underground Mine.

CategoryTonnage CommodityGrade
Proven 353,500 t Gold 2.63 g/t
Proven 353,500 t Silver 93 g/t
Proven 353,500 t Copper 0.4 %
Proven 353,500 t Zinc 4.9 %
Proven 353,500 t Lead 1.9 %
Probable 1,131,200 t Gold 1.22 g/t
Probable 1,131,200 t Silver 61 g/t
Probable 1,131,200 t Copper 0.2 %
Probable 1,131,200 t Zinc 2.8 %
Probable 1,131,200 t Lead 1 %
Proven & Probable 1,484,700 t Gold 1.55 g/t
Proven & Probable 1,484,700 t Silver 69 g/t
Proven & Probable 1,484,700 t Copper 0.3 %
Proven & Probable 1,484,700 t Zinc 3.3 %
Proven & Probable 1,484,700 t Lead 1.2 %
Measured 352 kt Gold 2.18 g/t
Measured 352 kt Silver 171.69 g/t
Measured 352 kt Copper 0.38 %
Measured 352 kt Zinc 4.79 %
Measured 352 kt Lead 1.57 %
Indicated 1,208 kt Gold 1.46 g/t
Indicated 1,208 kt Silver 120.06 g/t
Indicated 1,208 kt Copper 0.31 %
Indicated 1,208 kt Zinc 3.49 %
Indicated 1,208 kt Lead 1.21 %
Measured & Indicated 1,560 kt Gold 1.62 g/t
Measured & Indicated 1,560 kt Silver 131.72 g/t
Measured & Indicated 1,560 kt Copper 0.33 %
Measured & Indicated 1,560 kt Zinc 3.79 %
Measured & Indicated 1,560 kt Lead 1.29 %
Inferred 1,766 kt Gold 0.9 g/t
Inferred 1,766 kt Silver 94.16 g/t
Inferred 1,766 kt Copper 0.27 %
Inferred 1,766 kt Zinc 3.19 %
Inferred 1,766 kt Lead 1.18 %

Commodity Production Costs:

CommodityUnits2016
Credits (by-product) Gold Equivalent USD -777 / oz  
Total cash costs (sold) Gold Equivalent USD 1,325 / oz  
Total cash costs (sold) Gold Equivalent USD 548 / oz†  
All-in sustaining costs (sold) Gold Equivalent USD 970 / oz†  
All-in costs Gold Equivalent USD 1,137 / oz†  
† Net of By-Product.

Operating Costs:

Units2015
Total operating costs ($/t milled) USD 76

Financials:

Units2016
Capital expenditures M USD 15.1  
Revenue M USD 83.2  
Gross profit M USD 22.4  
After-tax Income M USD 4.4  



Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jun 11, 2021
....................... Subscription required ....................... Subscription required Subscription required Jun 11, 2021
....................... Subscription required ....................... Subscription required Subscription required Jun 11, 2021
....................... Subscription required ....................... Subscription required Subscription required Jun 11, 2021
....................... Subscription required ....................... Subscription required Subscription required Jun 11, 2021
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
Annual Report 2018
Form 10-K 2017
Corporate Presentation 2016
Form 10-K 2016
Annual Report 2015
Annual Report 2014
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News:

NewsDate
Gold Resource Corporation Reports Results of Operations for the Year-Ended December 31, 2022 March 2, 2023

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