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Brazil
Celesta Mine

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 Location:
27 Km E from Parauapebas, Brazil

  Address:
Rod PA 275, KM 37 S/N
Curionópolis
Brazil
68523
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WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Copper
  • Gold
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine development on Celesta Pit-1 (formerly the Osmar-1) and plant construction were completed in 2020 and Celesta produced first concentrates in July 2020. The Celesta Pit-2 was developed and put into operation in 2021. Plant expansion to double production is expected to start ramping up in Q2-2022.


Owners

Source: p. 1
CompanyInterestOwnership
Lara Exploration Ltd. 5 % Indirect
Tessarema Resources Inc. 40 % Indirect
North Extração de Minério Ltda. 55 % Indirect
Lara Exploration Ltd. owns a 2% net smelter returns royalty on the project and holds a 5% carried (to commercial production) equity interest in Celesta Mineração S.A. ("Celesta"), which is jointly operated by partners Tessarema Resources Inc. (with 40% interest), and North Extração de Minério Ltda. (with 55% interest).

Contractors

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Deposit Type

  • Hydrothermal
  • IOCG


Summary:

The Celesta Copper Project comprises multiple high-grade IOCG breccias.

The Maravaia deposit encloses four main copper-gold prospects, named respectively West, Osmar (now the Celesta), Galpão and East targets.

The Osmar Target is characterized by the presence of metamafic rocks, metadiorite, iron formation with strong hydrothermal alteration, amphibole-rich breccia zones and quartz breccias, altered amphibole-gneiss, intrusive magnetic gabbro-diorite, intrusive rocks of anorthositic composition, consolidated lateritic cover, lateritic covers, ferruginous colluvium (residual and transported), alluvial cover and old mining dump.

Two main associations of hydrothermal alteration were identified: a distal, pervasive alteration, characterized by the presence of scapolite and amphibole (in part chloritized), affected by deformation and shear (NNW and NW); the second association, superimposed on the first, is marked by breccia zones (NNW-SSE trending) with amphibole-albite-magnetite and that includes the copper occurrences on surface. Brecciation increases eastwards, with more frequent presence of veins of hydrothermal magnetite. It is noteworthy the correlation of these magnetite veins with second order magnetic anomalies. The two associations are limited to the east by a N20ºE oriented structure. The north-northeast limit is marked by thick iron formation unit, with enrichment in iron (iron deposit of Mineração Vertical Ltda.).

Diamond dr ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

Celesta's mining program initially focused on the near-surface portion of Osmar target. Production from a second pit, on the Osmar-2 target started in late 2020 and will be the source of material during Q1-2021 while a cut-back is completed on the Osmar pit.


Crushing and Grinding


Processing

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Summary:

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Reserves at January 15, 2016:
The cut-off grade for copper content was 0.75%. No cut-off grade was applied for gold.

CategoryTonnage CommodityGradeContained Metal
Indicated 2,140,000 t Copper 4.2 % 89,911 t
Indicated 2,140,000 t Gold 0.66 g/t 1,413 kg



Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 2, 2022
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Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
Technical Report 2016
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