• 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
Colombia
Miraflores Project

This page is not tailored to
devices with screen width under 750 px.
 Location:
191 NW from Bogota, Colombia

  Project Contacts:
Carrera 36 No 2 Sur 60 Int 1301, Poblado Alejandria
Medellin
Colombia
Phone  ...  Subscription required
EmailEmail
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 Colombia
A list of country's mines and projects.
Full profiles of select mines and projects.
  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & 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

StageFeasibility
Mine TypeUnderground
Commodities
  • Gold
  • Silver
Mining Method
  • Longhole open stoping
  • Backfill
Processing
  • Gravity separation
  • Calcining
  • Flotation
  • Concentrate leach
  • Inline Leach Reactor (ILR)
  • Merrill–Crowe
  • Cyanide (reagent)
Mine Life10 years (as of Jan 1, 2017)
Latest NewsRoyal Road Minerals Receives New 30 Year Mining Concession Contract in the Caldas and Risaralda Departments of Colombia     September 26, 2019


Owners

Source: p. 64
CompanyInterestOwnership
Metminco Ltd. 100 % Indirect
Miraflores Compania Minera SAS 100 % Direct
MCM (Miraflores Compañia Minera SAS) is a 100%- wned subsidiary of North Hill Holdings Group Inc., owned as to 100% by Metminco.

Deposit Type

  • Porphyry


Summary:

From a metallogenetic standpoint, mineralisation in the Quinchía district is genetically linked to the emplacement of a cluster of Miocene-aged hypabyssal porphyry bodies. A variety of magmatichydrothermal Au (Cu) and Au-Ag (Pb, Zn, Cu) deposit types are associated with the geochemical and cooling history of the porphyry bodies.


Mining Methods

  • Longhole open stoping
  • Backfill


Summary:

Retreat longhole open stoping with backfill is the mining method proposed. This method permits the extraction of the ore at maximum hydraulic radius after backfilling the stopes. The backfill assumed is waste material from mining and fine tailings material. Backfill is required for both stability and environmental reasons, allowing all waste material generated by the mining operation to be redeposited as fill in the mine.

All the mine accesses will be developed in rock mass with good geotechnical conditions. The first 80m of the decline ramp will be developed in basalt before transitioning to breccia.


Crushing and Grinding


Processing

  • Gravity separation
  • Calcining
  • Flotation
  • Concentrate leach
  • Inline Leach Reactor (ILR)
  • Merrill–Crowe
  • Cyanide (reagent)

Source: Subscription required

Summary:

The process facility is designed to treat 474,500 tonnes of ore per annum (1,300 tonnes per day). The wet plant is scheduled to operate seven days per week at a nominal treatment rate of 59 dry t/h.

Crushing Circuit
A run-of-mine (ROM) pad for storage of ore delivered by mine haul trucks will be established adjacent to the crushing plant feed bin (ROM bin). Ore will be reclaimed from the ROM stockpiles and delivered in the required blend to the ROM bin by a front-end loader.

A three-stage crushing plant will be provided to crush the ROM ore. The crushing plant has been designed to operate five days per week, 12 hours per day, at an effective utilisation of 70%, at a crushing rate of 220 t/h to produce sufficient product for the mill throughput of 474,500 dry t/a. The crushing circuit design will have sufficient capacity to build fine ore stocks to accommodate non-operational periods and tolerate shutdowns for maintenance requirements. The crushing plant pro ........

Recoveries & Grades:

CommodityParameterAvg. LOM
Gold Recovery Rate, %  ......  Subscription required
Gold Head Grade, g/t 3.29
Subscription required - Subscription is required.

Projected Production:

CommodityUnitsAvg. Annual
Gold oz 48,000
All production numbers are expressed as metal in doré.

Operational Metrics:

Metrics
Waste tonnes, LOM  ......  Subscription required
Ore tonnes mined, LOM  ......  Subscription required
Total tonnes mined, LOM  ......  Subscription required
Daily processing capacity  ......  Subscription required
Tonnes processed, LOM  ......  Subscription required
Annual processing capacity  ......  Subscription required
* According to 2017 study.

Reserves at October 30, 2017:

CategoryTonnage CommodityGradeContained Metal
Proven 1.7 Mt Gold 2.75 g/t 150 koz
Proven 1.7 Mt Silver 2.2 g/t 120 koz
Probable 2.62 Mt Gold 3.64 g/t 307 koz
Probable 2.62 Mt Silver 3.13 g/t 264 koz
Proven & Probable 4.32 Mt Gold 3.29 g/t 457 koz
Proven & Probable 4.32 Mt Silver 2.77 g/t 385 koz
Measured 2,958 kt Gold 2.98 g/t 283 koz
Measured 2,958 kt Silver 2.49 g/t 237 koz
Indicated 6,311 kt Gold 2.74 g/t 557 koz
Indicated 6,311 kt Silver 2.9 g/t 588 koz
Measured & Indicated 9,269 kt Gold 2.82 g/t 840 koz
Measured & Indicated 9,269 kt Silver 2.77 g/t 825 koz
Inferred 487 kt Gold 2.36 g/t 37 koz
Inferred 487 kt Silver 3.64 g/t 57 koz
Total Resource 9,756 kt Gold 2.8 g/t 877 koz
Total Resource 9,756 kt Silver 2.81 g/t 882 koz

Commodity Production Costs:

CommodityUnitsAverage
Total cash costs Gold USD 599 / oz *
Assumed price Silver USD 18 / oz *
Assumed price Gold USD 1,300 / oz *
* According to 2017 study / presentation.

Operating Costs:

Units2017
UG mining costs ($/t milled) USD 27.9 *
Processing costs ($/t milled) USD  ......  Subscription required
Total operating costs ($/t milled) USD  ......  Subscription required
* According to 2017 study.
Subscription required - Subscription is required.

2017 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Initial CapEx $M USD  ......  Subscription required
Sustaining CapEx $M USD  ......  Subscription required
UG OpEx $M USD  ......  Subscription required
After-tax Cash Flow (LOM) $M USD  ......  Subscription required
After-tax NPV @ 5% $M USD  ......  Subscription required
After-tax NPV @ 8% $M USD  ......  Subscription required
After-tax IRR, %  ......  Subscription required
After-tax payback period, years  ......  Subscription required
Subscription required - Subscription is required.

Proposed Heavy Mobile Equipment as of October 30, 2017:
HME TypeQuantity
Bulldozer 1
....................... Subscription required 1
....................... Subscription required 2
....................... Subscription required 1
....................... Subscription required 3
....................... Subscription required 1
....................... Subscription required 3
....................... Subscription required 1
....................... Subscription required 5
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 25, 2019
Subscription required - Subscription is required.

Staff:

Total WorkforceYear
Subscription required 2017

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2018
Feasibility Study Report 2017
Press Release 2017
Subscription required - Subscription is required.

News:

NewsDate
Royal Road Minerals Receives New 30 Year Mining Concession Contract in the Caldas and Risaralda Departments of Colombia September 26, 2019

Aerial view:

Subscription required - Subscription is required.

Terms of Use Privacy Policy © 2020 MDO Data Online Inc.