• Data Access
  • Your Email  
  • Your Email  
Keep me signed in.
Forgot your password?
Close
  • Forgot Your Password?
  • Enter the email you signed up with and we'll email it to you.
  • Your Email  
Close
Back
MDO
Mining Data Solutions
  • Home
  • Database
  • Subscribe
  • Sign In
  • Sign In
Brazil
Boa Vista Mine

This page is not tailored to
devices with screen width under 750 px.
 Location:
13 km NE from Catalao, Brazil

  Address:
Rodovia BR 050, Km 263, s/nº Fazenda Morro Agudo – Zona Rural
Catalão
Brazil
75701-970
Phone  ...  Subscription required
WebsiteWeb
Additional Resources for Suppliers & Investors
Drill results over 30 g/t Au
Stay on top of recent discoveries.
Search drill results by commodity and grade.
Largest mines in the Americas
Mining and mill throughput capaciites.
Full profiles of select mines and projects.
Deepest underground mines
Shaft depth and mill throughput data.
Full profiles of select mines and projects.
Heavy mobile equipment
HME type, model, size and quantity.
Full profiles of select mines and projects.
Permitting and construction projects
Projects at the permitting or construction stage. Full profiles of select projects.
Mines with remote camps
Camp size, mine location and contacts.
Full profiles of select mines and projects.
Mines & projects in Brazil
A list of country's mines and projects.
Full profiles of select mines and projects.
  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Financials
  • Fleet
  • Personnel
  • Filings & News

Thank you for browsing through mine profiles compiled by the Mining Data Online team.

Would you like to subcribe or schedule a Demo?
  • Name:
     
  • Company:
     
  • Position:
     
  • Phone:
  • Email:
  • Message:

Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Niobium
Mining Method
  • Truck & Shovel / Loader
Processing
  • Calcining
  • Pyrometallurgical plant / circuit
  • Desliming
  • Crush & Screen plant
  • Flotation
  • Leaching plant / circuit
  • Magnetic separation
Mine Life14 years (as of Jan 1, 2020)


Owners

Source: p. 108, 227
CompanyInterestOwnership
China Molybdenum Co., Ltd 100 % Indirect

Deposit Type

  • Breccia pipe / Stockwork


Summary:

Two significant niobium deposits have been defined to date and are named Boa Vista and Morro de Padre deposits. These deposits are hosts by igneous rocks which occur as swarms of thin dikes, forming a stockwork of crosscutting dikes in the upper zone and varying to individual mineralised thicker dikes at depth.

Niobium mineralisation is associated with nelsonite vein which vary in thickness and orientation forming stock work style deposits. Containing magnetite-apatite-carbonate composition economic mineralisation is exclusively associated with the mineral pyrochlore. The nelsonite veins are hosted within a variety of pre-existing lithologies including amphibolite and fenite, a metasomatically altered rock believed to originally comprise phyllite. Phlogopite alteration may also be associated with the carbonatite veins, where it commonly occurs as haloes surrounding the veins and overprinting the fenite. To a lesser extent phlogopite occurs as selvages to the nelsonite veins.

Both the Boa Vista and Morro de Padre deposits occur as pipe-like bodies consisting of sub vertical major feeder structures that permit vertical passage of the deep-seated carbonatite magmas to shallower depths where the dykes split into a complex stockwork of veins and veinlets. The stockwork zones are approximately 270m (N-S) by 350m (E-W) and are considered to be a result of magma degassing in response to reducing confining pressures and the formation of multiple sets of tensional fractures by the expanding gas exsolving from the ascending magma. A direct consequence of this model is the higher density of veins close to the central feeder zones, with decreasing vein abundance with increasing distance from the feeder zones. The vertical extent over which niobium mineralisation has been identified to a depth approximately 600m, however the drilling density is significantly higher in Boa Vista.


Mining Methods

  • Truck & Shovel / Loader


Summary:

The niobium ore from the Boa Vista mine is mined using conventional open-pit mining methods in multiple benches in a confined mine. Operations commence with waste stripping, or the removal of the organic waste soil layer, which covers the economically viable ore to be explored. It is carried out by backhoe loaders, which remove the material and load the waste onto the trucks, which transport and unload the material in the waste dump.

The Boa Vista pit has been mined since 2000 with fresh material reached in 2014. Overall slopes in the oxidized ore are 25 to 30o and bench face angle (BFA) of 65 degrees with 5-m high benches. Fresh rock have overall slopes of 50 to 53o, BFA of 85o and 10-m high benches.


Crushing and Grinding
Flow Sheet: Source
Crusher / Mill TypeModelSizePowerQuantity
Jaw crusher 2
Cone crusher 2
Ball mill 4.1m x 5.64m 1750 kW 2
Ball mill 2
Hammer mill 1
Rod mill 1


Processing

  • Calcining
  • Pyrometallurgical plant / circuit
  • Desliming
  • Crush & Screen plant
  • Flotation
  • Leaching plant / circuit
  • Magnetic separation

Flow Sheet: Subscription required

Summary:

The mined niobium ore is processed in two plants, being the Boa Vista (BV) plant and the Boa Vista Fresh Rock (BVFR) plant. The BV plant, which processes oxidized ore from the Boa Vista mine, will later be modified to handle material from Mina II and I. The second, recently constructed, plant is the BVFR plant, which processes fresh rock ore from the Boa Vista mine. In addition, there is the Tailings Plant which treats the phosphate plant tailings to produce a niobium concentrate. The niobium concentrate from all three plants are further processed through an alkaline and acid leaching process to remove other impurities. The leached products are combined and sent to the kiln in order to remove water. The last stage of the niobium processing circuit is an aluminothermic reaction by batch that produces a ferroniobium alloy with a grade of 65% Nb, in conformity with international standards.

The BVFR and BV concentrators have a throughput rate of 2 mpta and produce approximately ........


Production:

CommodityUnits2021202020192018201720162015
Niobium t  ......  Subscription required ^  ......  Subscription required  ......  Subscription required8,9578,6746,2596,300
All production numbers are expressed as metal in alloy. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics20202019201820172016
Tonnes processed  ......  Subscription required2.09 Mt2.27 Mt
Ore tonnes mined  ......  Subscription required3,190 kt
Annual mining capacity  ......  Subscription required14 Mt
Annual production capacity  ......  Subscription required13 kt of Ferro-niobium
Annual processing capacity  ......  Subscription required3.1 Mt
Subscription required - Subscription is required.

Reserves at December 31, 2020:

CategoryTonnage CommodityGrade
Proven & Probable 47.8 Mt Niobium 0.94 %
Total Resource 147.8 Mt Niobium 1.02 %

Financials:

Units20172015
Capital expenditures M USD 26  
Revenue M 1,670  RMB 111  USD
Operating Income M 151.3  RMB
Pre-tax Income M 151.3  RMB
After-tax Income M 149.2  RMB
EBIT M 33  USD
EBITDA M 40  USD


Heavy Mobile Equipment as of September 8, 2016:
HME TypeModelSizeQuantityLeased or
Contractor
Excavator ....................... Subscription required ....................... Subscription required Leased
Excavator ....................... Subscription required ....................... Subscription required Leased
Truck (haul) 35 t ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required May 29, 2021
....................... Subscription required ....................... Subscription required Subscription required May 29, 2021
....................... Subscription required ....................... Subscription required Subscription required May 29, 2021
....................... Subscription required ....................... Subscription required Subscription required May 29, 2021
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2015

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Annual Report 2017
Corporate Presentation 2017
Annual Report 2016
Project Description 2016
Annual Report 2015
Subscription required - Subscription is required.

Aerial view:

Subscription required - Subscription is required.

Terms of Use Privacy Policy © 2017-2022 MDO Data Online Inc.