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Botswana
Letlhakane Mine (Orapa Operation)

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 Location:
15 km SE from Letlhakane, Botswana

  Address:
Private Bag 001
Orapa
Botswana
Phone  ...  Subscription required
Fax+ 267-297-0243
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Processing
  • Production
  • Reserves
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeTailings
Commodities
  • Diamond
Production Start...
Mine Life22 years (as of Jan 1, 2021)
Open-pit operations at Letlhakane Mine ceased as planned in 2017. The plant for processing of tailings has been completed and is now operational.


Owners

Source:
CompanyInterestOwnership
Anglo American plc. 42.5 % Indirect
Government of the Republic of Botswana (GRB) 57.5 % Indirect
Debswana Diamond Company (Pty) Ltd (operator) 100 % Direct
Anglo American owns 85% of De Beers, the world’s leading diamond company. The remaining 15% of De Beers is owned by the Government of the Republic of Botswana (GRB).

Debswana is a joint venture between the government of Botswana and the South African diamond company De Beers; each party owns 50% of the company.

Contractors

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Deposit Type

  • Kimberlite
  • Tailings


Summary:

The Letlhakane mine consists of two kimberlite pipes and is one of a cluster of three kimberlite mines in central Botswana. Core logging and additional petrographic study classifies this deposit as a Group I, opaque-mineral and perovskite -rich altered probable monticellite kimberlite. Most of the kimberlite examined is massive volcaniclastic kimberlite, whilst rare layered volcaniclastic and magmatic kimberlite is also present.

Spinels are a ubiquitous component of kimberlites and their compositions are frequently used as petrogenetic indicators. The compositions of Letlhakane groundmass spinels will be used to fingerprint kimberlite facies by identifying the presence of several discrete batches of magma with unique evolution trends. The spinels are excellent indicators of these trends and are apparently immune to the affects of hydrothermal and subsequent alteration. Analysis has revealed that the Letlhakane spinel are unusually titanium-rich (TiO2 from 4.93 to 17.91 wt%), which correlates with other titanium-rich textural indicators such as the presence of prograde overgrowths of sphene around atolled-textured spinels and an unusually high proportion of perovskite to spinel of around 10:1, which is the inverse of a typical kimberlite.


Mining Methods


Summary:


Crushing and Grinding


Processing

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Summary:

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Production:

CommodityUnits20202017201620152014
Diamond carats  ......  Subscription required607,000595,000506,000548,000
All production numbers are expressed as mineral.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202020172015
Total tonnes mined  ......  Subscription required2,162,664 t
Tonnes processed  ......  Subscription required2,386,741 t
Plant annual capacity  ......  Subscription required3.6 Mt
Subscription required - Subscription is required.

Reserves at December 31, 2021:
Reported Diamond Reserves and Resources are based on a Bottom Cut-Off (BCO) which refers to the bottom screen size aperture and for Letlhakane Diamond Resources BCO 1.65 mm (for Kimberlite) and 1.15 mm (for tailings), Diamond Reserves BCO 1.15 mm.

CategoryOreTypeTonnage CommodityGradeContained carats
Probable Tailings 26.8 Mt Diamond 19.4 cpht 5.2 M carats
Indicated In-Situ (OP) 22.3 Mt Diamond 31.7 cpht 7.1 M carats
Inferred Tailings 52.7 Mt Diamond 26.7 cpht 14 M carats
Inferred In-Situ (OP) 18.7 Mt Diamond 27.8 cpht 5.2 M carats



Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Apr 9, 2022
....................... Subscription required ....................... Subscription required Subscription required Apr 9, 2022
....................... Subscription required ....................... Subscription required Subscription required Apr 9, 2022
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2018
Subscription required 2015

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
Annual Report 2018
Annual Report 2018
Year-end Mineral Reserves 2018
Annual Report 2017
Press Release 2017
Year-end Mineral Reserves 2017
Annual Report 2016
Corporate Presentation 2016
Year-end Mineral Reserves 2016
Annual Report 2015
Year-end Mineral Reserves 2015
Other 2013
Corporate Presentation 2012
Press Release 2005
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Subscription required - Subscription is required.

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