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Philippines
Rio Tuba Mine

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 Location:
76 km SW from Pulot, Philippines

  Address:
29th Floor NAC Tower, 32nd Street, Bonifacio Global City
Taguig
Philippines
1634
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Fax(02)892-5344
EmailEmail
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Nickel
  • Iron Ore
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life18 years (as of Jan 1, 2020)


Owners

Source: p. 8, 12, 71,97
CompanyInterestOwnership
Sojitz Corp. 4 % Indirect
PAMCO, Inc. 36 % Indirect
Nickel Asia Corp. 60 % Indirect
Rio Tuba Nickel Mining Corp. (operator) 100 % Direct
The Rio Tuba mine is operated by Rio Tuba Nickel (RTN) Mining Corporation. RTN is a 60% owned subsidiary of the Nickel Asia Corp.

PAMCO owns 36% and Sojitz owns 4% of the outstanding shares in the capital stock of RTN.

Contractors

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Deposit Type

  • Laterite


Summary:

The targeted deposit type for all projects is tropical (wet) lateritic nickel and cobalt. Particular emphasis is placed on the definition of reasonable thicknesses (i.e. >4m) of (garnieritic) saprolite.

This style of mineralisation is best developed in areas of moderate topographic gradient over olivine-rich ultramafic cumulates; particularly in areas of relatively higher bedrock fracture density.

Vertical zonation within nickeliferous laterite is distinct, with nickel content generally increasing with depth. Garnierite, the principal saprolite nickel host mineral, is a variety of serpentine, a silicate mineral developed below base of total oxidation in the weathering profile. Overprinted on the saprolite is an iron oxide zone of massive, microscopic scale goethite (limonite) needles termed “ferralite”. This zone is characterized by higher iron and manganese and lower magnesium content than the saprolite (garnierite) horizon. The presence of higher proportions of manganese oxides (“asbolite”) can frequently result in bonanza grades of cobalt (up to 3% locally), which readily incorporates into the asbolite crystal structure. Nickel content is generally lower than in the saprolite.

Geology:
- The nickeliferous laterite deposit at Rio Tuba was formed by the in-situ weathering of the ultramafic rocks. High moisture content and the occurrence of boulders and hard saprolite that hold 2% and above nickel are its outstanding characteristics ( ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The Rio Tuba mine site is located in Barangay Rio Tuba, municipality of Bataraza, in the southern tip of the province of Palawan. RTNMC exports saprolite and limonite ore, and provides limonite ore and non-mining services to the adjacent Coral Bay HPAL plant.

As one of the biggest nickel open pit mining sites in the Philippines, it has become Rio Tuba’s mission and goal to provide top quality end products to two of their biggest client countries which are China and Japan. After nickel is mined from an open pit, it goes through several phases of operation namely Saprolite Operation, Limonite Operation, and lastly, Gotok Limestone Operation. The company boasts of 5,200 hectares worth of mine sites but has only touched approximately 658.39 hectares of land for the past 35 years.


Crushing and Grinding


Processing


Summary:

Nickel Asia Corp is also the exclusive supplier of limonite ore from its Rio Tuba mine to the Coral Bay plant, the country’s first hydrometallurgical nickel processing plant owned by Coral Bay Nickel Corporation (CBNC), where NAC has a 10% equity interest.


Production:

CommodityUnits202120202019201820172016
Saprolite wmt  ......  Subscription required  ......  Subscription required  ......  Subscription required1,661,8381,529,5261,921,351
Limonite wmt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as ore.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202120202019201820172016
Ore tonnes mined  ......  Subscription required  ......  Subscription required5,449,332 wmt5,085,208 wmt3,059,679 wmt3,244,322 wmt
Waste  ......  Subscription required  ......  Subscription required130,674 wmt409,609 wmt147,995 wmt129,316 wmt
Subscription required - Subscription is required.

Reserves at December 31, 2021:
Cut-off grades used to estimate Ore Resources are as follows: Saprolite: > 1.00% Ni,< 20.00% Fe; Limonite: > 20.00% Fe

CategoryTonnage CommodityGradeContained Metal
Proven & Probable 53,910 kdmt Nickel 1.28 % 691.34 kt
Proven & Probable 53,910 kdmt Iron 25.6 % 13,803 kt
Measured & Indicated 57,064 kdmt Nickel 1.32 % 756 kt
Measured & Indicated 57,064 kdmt Iron 25.11 % 14,328 kt
Inferred 10,481 kdmt Nickel 1.43 % 150 kt
Inferred 10,481 kdmt Iron 16.11 % 1,689 kt



Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Aug 2, 2022
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Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required 2021
Subscription required 2020
Subscription required Subscription required Subscription required 2019

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Annual Report 2017
Annual Report 2016
Corporate Presentation 2015
Technical Report 2009
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Subscription required - Subscription is required.

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