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Brazil
Suruca Project (Chapada)

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 Location:
1 km N from Alto Horizonte, Brazil

  Project Contacts:
Rod. GO-347, s/n Fazenda Genipapo Zona rural
Alto Horizonte
Brazil
76560-000
Phone  ...  Subscription required
Fax55-62-3383-3931
WebsiteWeb
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  • Overview
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  • Mining
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  • Filings & News

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Overview

StageFeasibility
Mine TypeOpen Pit
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Mine Life7 years (as of Jan 1, 2019)
Feasibility Study considers oxide material through a heap leach process.

Exploration activities continue to improve knowledge on the deposit and processing options studied.


Owners

Source: p. 1,2
CompanyInterestOwnership
Lundin Mining Corp. 100 % Indirect
Mineração Maracá Indústria e Comércio S.A. (operator) 100 % Direct
Lundin Mining acquired, among other things, all of the issued and outstanding shares of Yamana Brazil Holdings B.V., which owns a 100% ownership stake in Mineração Maracá Indústria e Comércio S/A, which, in turn, owns the Chapada copper-gold mine located in Brazil, from Yamana Gold Inc.

Yamana retained a 2.0% net smelter return royalty on any future gold production from the Suruca gold deposit.

Contractors

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Deposit Type

  • Skarn


Summary:

Several genetic models have been suggested for Chapada, including: (i) a deformed and metamorphosed porphyry-type copper-gold deposit (Richardson et al., 1986; Oliveira et al., 2015), (ii) a deformed and metamorphosed volcanogenic disseminated sulphide deposit (Silva and Sá, 1986; Kuyumjian, 1989), and (iii) epithermal copper-gold deposit overprinted by metamorphic remobilization (Kuyumjian, 2000).

Currently, the most accepted metallogenetic model for Chapada is a metamorphosed porphyry model associated with skarn system. The magmatic hydrothermal system was generated in island arc stage setting (approximately 884 Ma to 879 Ma) and posteriorly overprinted by remobilization of orogenic fluids during Brasiliano events (ca. 630 Ma).

The porphyry, skarn, and epithermal system can be separated into three distinct mineralization styles, based on hydrothermal alteration and metal association:
- Copper-Gold Porphyry System (Chapada Corpo Principal, Corpo Sul, and Sucupira);
- Gold (Silver-Lead-Zinc) Distal Skarn (Suruca);
- Copper-Gold Proximal Skarn (Suruca SW).

The Chapada and Suruca deposits are located in the metavolcano-sedimentary sub-unit of Mara Rosa Sequence.

MINERALIZATION.
SURUCA.
The Suruca SW mineralization was discovered in 2017 exhibiting similar geological features to the Chapada deposit. The mineralization was delineated along a 2.1 km strike, 650 m width, and average depth of 50 m, and was par ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

At Suruca, pit design parameters are as follows:
For saprolite and oxide material types:
- 5 m bench height,
- 60° bench face angle,
- 4 m to 8 m safety berm,
- 15 m ramp width at maximum 10% gradient.

For sulphide material type:
- 30 m bench height,
- 70° bench face angle,
- 12 m safety berm,
- 25 m ramp width at maximum 10% gradient.

The start date of the Suruca oxide mine is currently under consideration by Yamana. Studies are ongoing to assess the Suruca oxide and sulphide pits as an integrated complex.

Currently, Suruca sulphide reserves are planned to be mined at the end of the Chapada mine life and ore from Suruca Sulphide will be fed into a modified Chapada processing plant at a rate of 8 Mtpa. However, alternative scenarios are currently being studied to process Suruca Sulphide with a standalone CIL or CIP plant.


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

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Combined production numbers are reported under Chapada

Operational Metrics:

Metrics
Waste tonnes, LOM 23,004 kt of oxide *
Ore tonnes mined, LOM 23,326 kt of oxide *
Total tonnes mined, LOM 196,057 kt *
Tonnes processed, LOM 22,526 kt of oxide *
Annual processing rate 8 Mt *
* According to 2019 study.

Reserves at October 10, 2019:
Suruca gold only Mineral Reserves are estimated at a cut-off grade of 0.19 g/t Au for oxide material and 0.30 g/t Au for sulphide material.

The Mineral Resources as at 30th June 2020 at Suruca mine are unchanged from 10 October 2019.

CategoryOreTypeTonnage CommodityGradeContained Metal
Proven Sulphide 692 kt Gold 0.49 g/t 0.01 M oz
Proven Oxide 10,761 kt Gold 0.41 g/t 0.14 M oz
Probable Sulphide 41,976 kt Gold 0.56 g/t 0.75 M oz
Probable Oxide 11,765 kt Gold 0.41 g/t 0.16 M oz
Proven & Probable Sulphide 42,669 kt Gold 0.56 g/t 0.76 M oz
Proven & Probable Oxide 22,526 kt Gold 0.41 g/t 0.3 M oz
Proven & Probable Total 65,195 kt Gold 0.51 g/t 1.07 M oz
Measured Total 12,737 kt Gold 0.42 g/t 0.17 M oz
Indicated Total 134,780 kt Gold 0.54 g/t 2.32 M oz
Measured & Indicated Total 147,518 kt Gold 0.53 g/t 2.49 M oz
Inferred Total 12,565 kt Gold 0.48 g/t 0.19 M oz

Commodity Production Costs:

CommodityUnitsAverage
Assumed price Gold USD  ......  Subscription required&nbs
* According to 2019 study / presentation.

Operating Costs:

Units2019
OP mining costs ($/t mined) USD 1.27 *
Processing costs ($/t milled) USD  ......  Subscription required
G&A ($/t milled) USD  ......  Subscription required
Total operating costs ($/t milled) USD  ......  Subscription required
* According to 2019 study.
Subscription required - Subscription is required.



Proposed Heavy Mobile Equipment as of October 10, 2019:
HME TypeModelSizeQuantityLeased or
Contractor
Dozer (crawler) ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... 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 Nov 15, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 15, 2022
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Information Form 2018
Technical Report 2018
Subscription required - Subscription is required.

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