Colombia

Buriticá Mine

Click for more information

Categories

Overview

Mine TypeUnderground
Commodities
  • Gold
Mining Method
  • Longhole open stoping
  • Cut & Fill
  • Shrinkage stoping
  • Cemented (undefined) backfill
Production Start... Lock
Mine Life2036
ShapshotThe Buriticá Gold Mine is among the world’s largest, ultra-high grade gold mines.

Technological upgrade with a mining and processing capacity of 4,000 tonnes per day is completed. The project can produce more than 8 tonnes of gold per annum.

Owners

SourceSource
CompanyInterestOwnership
Zijin Mining Group Co., Ltd 69.28 % Indirect
Zijin America owns a 100% equity interest in Continental Gold. Continental Gold was officially delisted from the Toronto Stock Exchange in Canada and OTCQX international market in the United States after the acquisition was completed.

Non-controlling shareholders of Zijin America are CLAI Gilding (BVI) Investment Limited and ZLCFL-Cayman International Investment Cooperation Limited (30.72%).

Zijin Mining Group Co., Ltd has remaining 69.28%.

Contractors

Lock

- subscription is required.

Deposit type

  • Epithermal
  • Vein / narrow vein

Summary:

The Buriticá deposits are classified as intermediate sulphidation epithermal using the terminology of Sillitoe and of Hedenquist (in Simmons et al, 2005). Corbett and Leach (1997) recognized a specific sub-class of low sulphidation epithermal deposits with high base metal contents and carbonatebearing gangue, which they named CBM association. Although such mineralization is perhaps better described as “base metal carbonate sulphide-rich”, and may occur over depth extents much larger than many low sulphidation epithermals, the Buriticá systems are referred to as the CBM association.

Mineralization at Buriticá is a porphyry related, carbonate base metal (CBM) gold vein/breccia system. High-grade precious metal mineralization in CBM systems may occur over substantial vertical intervals, to well in excess of a kilometre, from the porphyry level to below the shallow epithermal range. Compared to low sulphidation epithermal styles CBM mineralization is sulphide-rich, with abundant pyrite ± pyrrhotite + sphalerite + galena along with minor sulfosalts, chalcopyrite and quartz-carbonate gangue mineralogy. Gold in CBM systems may be free-milling or refractory. Mineralization in CBM systems typically comprises sheeted veins, stockworks and mineralogically similar breccias with some fracture-related dissemination in wallrocks.

CBM systems are widespread in circum-Pacific magmatic arcs, and include the supergiant Porgera deposits in Papua New Guinea (25 million ounces of gold, previous production plus remaining reserves and resources) and the Kelian deposits (7 million ounces (Moz) of gold produced + resources) in Indonesia. Gold mineralization at Porgera has been mined over a vertical range of 500 m but potentially economic mineralization extends over more than 1,000 m depth range.

CGI recognized the strong similarities of the Porgera and Buriticá mineralized systems and this gave CGI the confidence to drill extensively and deeply at Yaraguá and Veta Sur.

Precious metal mineralization in Yaraguá and Veta Sur appears to be related to two main depositional stages. Stage I is represented by banded base metal (iron, zinc and lead) sulphide-rich mineralization with variable amounts of quartz-carbonate gangue and bands. As well as in subparallel narrow vein arrays, Stage I mineralization also occurs in veined (dilational) breccias in places occupying substantial areas of both Yaraguá and Veta Sur, but at grades typically lower than those of the high-grade veins. CGI’s experience at the Yaraguá mine indicates that Stage I mineralization is non-refractory and recoverable by simple gravity and flotation circuits, flotation concentrates being cyanided, gold and silver then recovered by the Merrill Crowe process. Wall-rock alteration around Stage I veins comprises narrow phyllic assemblages ± K-feldspar. Stage I mineralization evidently overprints earlier potassic, phyllic and propylitic alteration.

Stage II mineralization is a texturally and chemically distinctive high-grade gold mineralization that locally cross-cuts and overprints Stage I mineralization as veins and breccia veins. Stage II mineralization is characterized by abundant free (and commonly visible) gold in siliceous and carbonate gangue, associated with arsenical pyrite and with low zinc and lead contents, relatively high arsenic and antimony but low bismuth contents. Stage II mineralization is, to date, largely known from the Veta Sur system in which this style of mineralization contributes to some very highgrade precious metal subzones, but has also been encountered in the Yaraguá system.

Reserves

Lock

- subscription is required.

Mining Methods

Lock

- subscription is required.

Comminution

Crushers and Mills

Lock

- subscription is required.

Processing

Lock

- subscription is required.

Production

CommodityUnits2023202220212020
Gold kg 0000000000000000
All production numbers are expressed as metal in doré. ^ Guidance / Forecast.

Operational metrics

Metrics202220212020
Daily mining capacity 0000
Daily processing capacity 000000000000
Annual production capacity 000

Production Costs

Commodity production costs have not been reported.

Financials

Units202220212020
Operating Income M RMB  ....  Subscribe  ....  Subscribe  ....  Subscribe
After-tax Income M RMB  ....  Subscribe  ....  Subscribe  ....  Subscribe
Operating Cash Flow M RMB  ....  Subscribe  ....  Subscribe  ....  Subscribe

Heavy Mobile Equipment

Lock

- subscription is required.

Personnel

Mine Management

Source Source
Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Mar 18, 2019
....................... Subscription required ....................... Subscription required Subscription required Aug 23, 2023
....................... Subscription required ....................... Subscription required Subscription required Aug 23, 2023
....................... Subscription required ....................... Subscription required Subscription required Aug 23, 2023
....................... Subscription required ....................... Subscription required Subscription required Aug 23, 2023
....................... Subscription required ....................... Subscription required Subscription required Aug 23, 2023
....................... Subscription required ....................... Subscription required Subscription required Aug 23, 2023

EmployeesYear
Subscription required 2020

Aerial view:

Lock

- subscription is required.