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Botswana
Mupane Mine

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 Location:
28 km SE from Francistown, Botswana

  Address:
Farm 75 – NQ Northeast District
P O. Box 20164
Francistown
Botswana
Phone  ...  Subscription required
WebsiteWeb
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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
Mining Method
  • Truck & Shovel / Loader
  • Blasthole slot
Processing
  • Gravity separation
  • Carbon re-activation kiln
  • Flotation
  • Concentrate leach
  • Carbon in leach (CIL)
  • Carbon adsorption-desorption-recovery (ADR)
  • Elution
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)
Mine Life3 years (as of Jan 1, 2020)
Latest NewsGalane Gold Ltd. Announces the Completion of the Disposition of its Mupane Property     May 3, 2022


Owners

Source:
CompanyInterestOwnership
Hawks Mining Company Proprietary Limited 100 % Indirect
On May 03, 2022, Galane Gold Ltd. completed the sale of its Mupane gold mine in Botswana (the “Mupane Property”) to Hawks Mining Company Proprietary Limited (“Hawks Mining”), a company registered under the laws of Botswana.

Deposit Type

  • Orogenic


Summary:

The Mupane deposits are located in an area known as the Mupanipani Hills, ridges formed by outcrops of banded siliceous and graphitic iron formation (GIF). These units of so-called „iron formation? are hosted by a sequence of metasediments, including coarse grained carbonate bearing conglomerates, para amphibolites, marbles, metapelites and minor orthoamphibolites. The host rocks are all variably schistose depending on the abundance of micaceous components (Tomkinson and Putland 2006).

The geology of the properties and the style of the gold mineralisation varies between the various deposits.

The Tati Greenstone Belt (TGB) hosts numerous small scale nickel and gold deposits.

The nickel deposits consist almost entirely of disseminated to semi massive sulphide bodies hosted by a series of late stage troctolitic intrusive bodies on the northeastern edge of the greenstone belt.

The belt has been extensively prospected in the past due to the abundance of numerous small scale narrow quartz vein hosted gold deposits. These deposits are all clearly related to late stage, high level brittle shear zones developed within the volcanics and sediments of the belt.

The deposits were generally refractory in the fresh sulphides and contained significant amounts of arsenopyrite and some stibnite although the gold is principally hosted within pyrite and to a lesser extent pyrrhotite (i.e. Map-Nora Lodes). The alteration associated with the mineralisation varies depending on the host rocks but typically consists of biotite, muscovite, chlorite, carbonate and ubiquitous quartz either as veins or silicification. Very few of these deposits appear to have developed significant magnitude to be worthwhile propositions for modern gold mining.

In style the gold mineralisation conforms to the Archaean Lode Gold or Orogenic Gold style of mineralisation. They all appear to have formed late in the history of the belt and closely resemble mineralisation seen in the Archaean greenstone belts of Canada, South America and Australia.

Mineralisation is a “disseminated-style" in well-bedded, silicified quartz-rich parts of the graphitic iron formation (GIF) at Tau and Tholo and partly silicified graphitic schists at Kwena. This style of mineralisation is unlike that of most Achaean gold deposits being a broad siliceous zone. Mineralisation is not dominated by discrete veins and the deposit lacks sharply-bounded loads. The mineralized parts are however distinctive due to the silicification of the GIF.

The ore zone at Tau lies within the GIF unit. In comparison to unmineralized GIF, mineralized GIF is substantially altered. The addition of silica, remobilized silica, carbonate, wallrock fragmentation and the addition of vein quartz and sulphides have in large part overprinted the original features of the GIF. Mineralized GIF is highly siliceous and carbonated, highly deformed with the graphitic units strongly sheared. Deformation is ductile, with a very minor brittle component, mostly fracturing, and specifically fracturing of arsenopyrite. Minor vein quartz are brecciated, sheared and incorporate much of the GIF wallrock. Arsenopyrite is the most visual sulphide phase, and gold mineralisation is sulphidation of wallrock by this phase.


Mining Methods

  • Truck & Shovel / Loader
  • Blasthole slot


Summary:

The Corporation continued to mine from the Tau deposit at the Mupane Property during the three months ended December 31, 2020 (“Q4 2020”), and continued reclamation of the Monarch slimes dump, while commencing open cut mining operations at Dinokwe, and underground operations at Golden Eagle:

- Tau – In Q4 2020, the Corporation continued mining in the main reef of the ore body with 64,309 tonnes at 2.05 g/t being mined (three months ended December 31, 2019 (“Q4 2019”) – 82,316 tonnes at 2.67 g/t). The tonnes and grade for Q4 2020 were lower than Q4 2019 with mining activity reduced during the quarter impacted by increasing mine depth. For 2020, 262,046 tonnes at 2.39 g/t were mined compared to 339,593 tonnes at 2.74 g/t for the year ended December 31, 2019 (“2019”). The mined tonnes for 2020, have been impacted by the COVID-19 restrictions and the impact of increasing mine depth, while the grade decreased as a result of a change in the mining location within the ore body.

- Dinokwe – In early 2020 the Corporation commenced development of a small scale open pit mine at Dinokwe, approximately 7 kilometres from the Mupane processing plant. For Q4 2020 mining was focused on stripping operations with 230,174 tonnes of waste mined, and 15,365 tonnes of ore at a grade of 1.79 g/t. For 2020 a total of 1,087,925 tonnes of waste have been mined, along with 45,145 tonnes of ore at an average grade of 1.78 g/t.

- Golden Eagle – During Q4 2020 the Corporation continued underground mining operations at its Golden Eagle property located approximately 26 kilometres from the Mupane Property. Historically an open pit operation, the Corporation has continued development on an underground portal, and mining during Q4 2020. During Q4 2020 the Corporation mined 32,182 tonnes at an average grade of 2.36 g/t. For 2020 a total of 52,392 tonnes of ore have been mined at an average grade of 2.46 g/t.

- Monarch – In Q4 2020, the Corporation transported 39,687 tonnes at an average grade of 0.66 g/t, (Q4 2019 – 86,299 tonnes at 1.00 g/t) with the hauling of Monarch sands for Q4 2020 lower due to the Monarch sands being fully depleted during the quarter. For 2020 the Corporation transported 278,269 tonnes at an average grade of 0.87 g/t compared to 213,448 tonnes at an average grade of 0.96 g/t, with the 2019 tonnages lower due to operations only commencing towards the end of Q1 2019.


Crushing and Grinding
Flow Sheet: Source
Crusher / Mill TypeModelSizePowerQuantity
Jaw crusher ....................... Subscription required 48" x 36" 1
SAG mill ....................... Subscription required 21' x 13' 2500 kW 1
Ball mill ....................... Subscription required 13' x 17' 1550 kW 1
Regrind 9' x 14' 450 kW 1


Processing

  • Gravity separation
  • Carbon re-activation kiln
  • Flotation
  • Concentrate leach
  • Carbon in leach (CIL)
  • Carbon adsorption-desorption-recovery (ADR)
  • Elution
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)

Flow Sheet: Subscription required

Summary:

The Mupane processing plant uses conventional carbon-in-leach (“CIL”) processing to recover gold and produce gold bullion after grinding in a two stage circuit with one semi-autogenous grind (“SAG”) mill and one ball mill. The plant has been designed at a nominal throughput of 1.2 million tonnes per annum for oxide ores. For primary (sulphide) ores, a combination of flotation and CIL processing is used at a designed nominal throughput of 1.0 million tonnes per annum.

The Mupane gold plant design was based on well understood and proven technology with the flow
sheet consisting of the following:

The flow sheet consists of:
-Crushing.
-Grinding.
-Flotation (for primary ore).
-Cyanide leach/carbon adsorption.
-Carbon desorption.
-Gold recovery.
-Cyanide detoxification and arsenic precipitation.
-Tailings disposal.
-Reagent mixing, storage and distribution.
-Water and power supply.
-Other services.

Recoveries & Grades:

CommodityParameter202020192018201720162015
Gold Recovery Rate, %  ......  Subscription required  ......  Subscription required67.470.371.372.1
Gold Head Grade, g/t  ......  Subscription required  ......  Subscription required1.971.751.291.29

Production:

CommodityUnits2021202020192018201720162015
Gold koz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required36292724
^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202020192018201720162015
Tonnes milled  ......  Subscription required732,789 t831,158 t740 kt908 kt810 kt
Subscription required - Subscription is required.

Reserves at December 31, 2020:
Resource tonnages and gold grades were reported at a 0.5 g/t Au cut-off grade. A cut-off grade of 0.3 g/t Au was used for the slimes dump due to the possible need for a different processing method.

CategoryOreTypeTonnage CommodityGradeContained Metal
Proven 0.9 kt Gold 1.27 g/t 0.04 koz
Probable 2,015 kt Gold 2.05 g/t 132.5 koz
Proven & Probable 2,016 kt Gold 2.04 g/t 132.5 koz
Measured 1,603 kt Gold 1.42 g/t 73 koz
Measured Slag stockpile 12,851 kt Gold 0.42 g/t 174.2 koz
Indicated 3,748 kt Gold 1.43 g/t 172.6 koz
Measured & Indicated 5,352 kt Gold 1.43 g/t 245.6 koz
Measured & Indicated Slag stockpile 12,851 kt Gold 0.42 g/t 174.2 koz
Inferred 4,397 kt Gold 1.36 g/t 192.5 koz

Commodity Production Costs:

CommodityUnits2021202020192018201720162015
Cash costs Gold USD  ......  Subscription required  ......  Subscription required 928 / oz 933 / oz 965 / oz 1,039 / oz
All-in sustaining costs (AISC) Gold USD  ......  Subscription required ^
^ Guidance / Forecast.
Subscription required - Subscription is required.

Financials:

Units202020192018201720162015
Revenue M USD  ......  Subscription required  ......  Subscription required44.6   37.3   32.7   26.2  
Operating Income M USD  ......  Subscription required  ......  Subscription required3   1.7   -1.3   -8.2  
Subscription required - Subscription is required


Heavy Mobile Equipment:

Mine Management:

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

Staff:

EmployeesYear
Subscription required 2020
Subscription required 2019

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
Annual Information Form 2018
Management Discussion & Analysis 2018
Annual Information Form 2017
Annual Information Form 2016
Corporate Presentation 2016
Management Discussion & Analysis 2016
Technical Report 2011
Subscription required - Subscription is required.

News:

NewsDate
Galane Gold Ltd. Announces the Completion of the Disposition of its Mupane Property May 3, 2022
Galane Gold Ltd. Announces Execution of Definitive Agreements for the Disposition of Its Mupane Property February 7, 2022

Aerial view:

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