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Zimbabwe
Renco Mine

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 Location:
70 km SE from Masvingo, Zimbabwe

  Regional Office:
No. 1 Kenilworth Road, Newlands
Harare
Zimbabwe
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Gold
Mining Method
  • Longwall
Processing
  • Smelting
  • Flotation
  • Agitated tank (VAT) leaching
  • Carbon in leach (CIL)
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)
Mine Life1.5 years (as of Jan 1, 2019)


Owners

Source: p. 4
CompanyInterestOwnership
RioZim Ltd. 100 % Indirect

Deposit Type

  • Metamorphic


Summary:

Gold (Au) deposits in Zimbabwe are clustered on the Zimbabwean craton and mostly associated with the greenstone belts. These greenstone belts are thought to have formed on the basement of older granitic gneisses and are grouped as the Sebakwian, Bulawayan and Shamvaian groups. The Renco mine and surrounding deposits are not located in the greenstones, but rather on the Limpopo mobile belt. The gold here is, however, thought to have been remobilised during the deformation of the belt from the greenstones.

The Renco mine is the only gold mine not located on a greenstone belt in Zimbabwe – it is located in the Limpopo mobile belt. Gold is thought to have been remobilised from one of the adjacent greenstone belts during this deformation period and deposited in zones of structural weakness at Renco. Four types of reefs have historically been exploited, namely the steep, named after its nearvertical orientation, the orange, green and red reefs, which were arbitrarily given these names to distinguish them. The red, green and orange reefs have a far shallower dip and the red reef has been exploited to the greatest extent.


Mining Methods

  • Longwall


Summary:

Mining at Renco is carried out using the long-wall stoping mining method.


Crushing and Grinding


Processing

  • Smelting
  • Flotation
  • Agitated tank (VAT) leaching
  • Carbon in leach (CIL)
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)

Source: Subscription required

Summary:

The plant at Renco is old and in need of refurbishment. Although it was only constructed in 1982, it was second-hand at the time. It is a typical CIL processing plant. Ore is crushed, milled and passed through a thickener and a pre-conditioner and is then passed through six leaching tanks. After that, it passes through flotation tanks, roughers and scavengers to produce a concentrate. Gold is smelted on site and transported to Harare.

Recoveries & Grades:

CommodityParameter2015201420132012
Gold Head Grade, g/t 3.592.983.323.51

Production:

CommodityUnits201920182017201620152014
Gold kg  ......  Subscription required  ......  Subscription required688712750648
All production numbers are expressed as metal in doré.
Subscription required - Subscription is required.

Operational Metrics:

Metrics2015201420132012
Ore tonnes mined 302,847 t246,128 t210,447 t221,590 t

Reserves at December 31, 2018:

CategoryTonnage CommodityGradeContained Metal
Proven 52,460 t Gold 5.96 g/t 313 kg
Probable 240,497 t Gold 5.91 g/t 1,421 kg
Proven & Probable 292,957 t Gold 5.92 g/t 1,734 kg
Measured 143,980 t Gold 5.38 g/t 775 kg
Indicated 1,701,405 t Gold 5.48 g/t 9,325 kg
Inferred 3,110,631 t Gold 7.49 g/t 23,306 kg


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Aug 6, 2020
....................... Subscription required ....................... Subscription required Subscription required Aug 6, 2020
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2009

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
................................... Subscription required 2018
Annual Report 2017
Annual Report 2016
Annual Report 2015
Annual Report 2013
Other 2009
Other 2003
Subscription required - Subscription is required.

Aerial view:

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