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Tanzania
New Luika Mine

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 Location:
24 km NW from Kanga, Tanzania

  Regional Office:
202, 2nd Floor, Renaissance Plaza, Plot No. 498, Haile Selassie Road, Masaki
P.O. Box 79408
Dar es Salaam
Tanzania
Phone  ...  Subscription required
Fax+255 22 2925151
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit & Underground
Commodities
  • Gold
  • Silver
Mining Method
  • Truck & Shovel / Loader
  • Longhole open stoping
  • Backfill
Processing
  • Smelting
  • Carbon re-activation kiln
  • Agitated tank (VAT) leaching
  • Carbon in leach (CIL)
  • Carbon adsorption-desorption-recovery (ADR)
  • Elution
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)
Mine Life2025
Latest NewsShanta Gold Receives “Encouraging” New Luika Results     November 24, 2021


Owners

Source: p. 83
CompanyInterestOwnership
Shanta Gold Ltd. 100 % Indirect
Shanta Mining Co. Ltd. (operator) 100 % Direct

Deposit Type

  • Vein / narrow vein


Summary:

The ore bodies at New Luika comprise high grade (>6g/t Au), medium grade (3 – 6 g/t Au) and low grade (1 – 3 g/t Au) to average 3.9g/t Au.

The regional geology is characterised by deformed, folded, sheared and metamorphosed paleoproterozoic rocks with major fold axes trending east southeast to west northwest. The following main lithological units occur in the region:

Ilunga Granite Formation
The Ilunga Granite is located in the northern portion of the Lupa Goldfield and is mostly comprised of a medium to coarse grained leucogranite (aplogranite). Biotite and muscovite are commonly associated secondary minerals.

Saza Granite Formation
The Saza Granite is located in the central portion of the Lupa Goldfield and consists of numerous rock types including hornblende rich granites and hornblende-biotite rich granodiorites.

Gneiss Formation
The Gneiss Formation, the main ore bearing host, is the dominant rock unit within the Lupa Goldfield. The Gneiss Formation has been subjected to at least three granitic intrusive events that have given rise to a variety of rock types such as felsitic gneiss, biotite and hornblende granite gneiss, leucocratic granular gneiss. Diorite, granodiorite and granite rocks are evident within the Gneiss Formation.

Mineralised quartz veined targets are hosted within brittle-ductile to ductile deformational features of variable orientation.


Mining Methods

  • Truck & Shovel / Loader
  • Longhole open stoping
  • Backfill


Summary:

The New Luika transitioned to a predominantly underground operation and entered commercial production in June 2017. Since 2017, New Luika’s underground mining activities have delivered a consistent plant feed.

New Luika delivered its highest ever mill feed from underground operations in 2019, with open pits providing supplementary ore feed for three months of the year, in line with the planned mining schedule.

One of the major successes of 2019 was reaching commercial production from the Ilunga Underground Mine on schedule and on budget. Commercial production was declared following net pre-production capital investment of only US$5.0 million and Ilunga is now the third source of high-grade underground feed at New Luika, alongside the Bauhinia Creek and Luika underground deposits.

Underground mining is from Bauhinia Creek, Luika and Ilunga to depths below surface of 350 metres, 315 metres and 250 metres respectively. Mining methods are predominantly long hole open stoping with back fill where warranted.


Crushing and Grinding
Flow Sheet: Source
Crusher / Mill TypeModelSizePowerQuantity
Jaw crusher 1
Cone crusher ....................... Subscription required 2
Ball mill 2

Summary:

Conventional CIL plant using jaw and cone crushing circuit with twin ball mills.


Processing

  • Smelting
  • Carbon re-activation kiln
  • Agitated tank (VAT) leaching
  • Carbon in leach (CIL)
  • Carbon adsorption-desorption-recovery (ADR)
  • Elution
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)

Flow Sheet: Subscription required

Summary:

The processing is metallurgically simple and conventional involving proven crushing and milling techniques with carbon-in-leach gold extraction delivering robust gold recoveries (average 91% recovery).

New Luika plant capacity expansion
The New Luika plant upgrade will focus on increased ball mill power, with upgrades to other components including an increase to pumping capacity, a tailings discharge system, and additional leach capacity to support the higher throughput and increase operability.

Increased plant capacity will provide New Luika with the flexibility to reduce cut off grades, thus lowering the hurdle for resources to be converted to minable ounces.

Plant capacity expansion is expected to be completed in January 2021 with milled throughput to increase immediately thereafter.

Following commissioning, the annual nameplate processing capacity at NLGM is expected to increase to a baseline of 708Ktpa (current nameplate capacity o ........

Recoveries & Grades:

CommodityParameter202020192018201720162015
Gold Recovery Rate, %  ......  Subscription required  ......  Subscription required90.991.289.989.6
Gold Head Grade, g/t  ......  Subscription required  ......  Subscription required4.44.285.084.96

Production:

CommodityUnits2021202020192018201720162015
Gold oz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required81,87279,58587,71381,873
Silver oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as metal in doré. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202020192018201720162015
Ore tonnes mined  ......  Subscription required603,373 t677,734 t536,669 t615,432 t478,144 t
Tonnes milled  ......  Subscription required702,336 t639,678 t632,287 t597,583 t563,619 t
Annual milling capacity  ......  Subscription required
Subscription required - Subscription is required.

Reserves at June 30, 2020:
Mineral Resource Estimate - COG 1.0 g/t.

CategoryOreTypeTonnage CommodityGradeContained MetalRecoverable Metal
Probable In-Situ (OP) 1,704 kt Gold 2.1 g/t 115 koz 104 koz
Probable In-Situ (UG) 2,237 kt Gold 4.1 g/t 295 koz 266 koz
Probable Total 3,941 kt Gold 3.23 g/t 410 koz 370 koz
Measured Total 977 kt Gold 3.22 g/t 101 koz
Indicated Total 7,320 kt Gold 2.93 g/t 690 koz
Inferred Total 4,578 kt Gold 2.05 g/t 301 koz
Total Resource Total 12,876 kt Gold 2.64 g/t 1,091 koz

Commodity Production Costs:

CommodityUnits202120202019201820172016
Cash costs Gold USD  ......  Subscription required  ......  Subscription required 538 / oz
All-in sustaining costs (AISC) Gold USD  ......  Subscription required ^  ......  Subscription required  ......  Subscription required 730 / oz 743 / oz 661 / oz
^ Guidance / Forecast.
Subscription required - Subscription is required.

Financials:

Units20202019201820172016
Capital expenditures M USD  ......  Subscription required  ......  Subscription required18.1   37.9   54.6  
Revenue M USD  ......  Subscription required  ......  Subscription required103.8   103.4   107.1  
Operating Income M USD  ......  Subscription required  ......  Subscription required19.3   11   3  
Gross profit M USD  ......  Subscription required  ......  Subscription required27.2   19.3   14.8  
Pre-tax Income M USD  ......  Subscription required  ......  Subscription required13.1   3.6   -4.3  
After-tax Income M USD  ......  Subscription required  ......  Subscription required8   4.2   -8  
EBITDA M USD  ......  Subscription required  ......  Subscription required45.7   37.7   50.2  
Operating Cash Flow M USD  ......  Subscription required  ......  Subscription required31  
Subscription required - Subscription is required


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Apr 8, 2021
....................... Subscription required ....................... Subscription required Subscription required Apr 8, 2021
....................... Subscription required ....................... Subscription required Subscription required Apr 8, 2021
....................... Subscription required ....................... Subscription required Subscription required Apr 8, 2021
....................... Subscription required ....................... Subscription required Subscription required Apr 8, 2021
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required 2020
Subscription required 2019
Subscription required 2018
Subscription required Subscription required Subscription required 2017

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Annual Review 2018
Quarterly Report 2018
Annual Report 2017
Annual Review 2017
Corporate Presentation 2017
Corporate Presentation 2017
Year-end Mineral Reserves 2017
Annual Report 2016
Sustainability Report 2016
Corporate Presentation 2013
Subscription required - Subscription is required.

News:

NewsDate
Shanta Gold Receives “Encouraging” New Luika Results November 24, 2021

Aerial view:

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