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Ronnbacken Data

Nearby Locations

Nearby Location News

  • Tertiary granted exploitation permit for Sweden fluorspar play 2016-03-02
    Aim-listed Tertiary Minerals has been granted a 25-year exploitation permit to extract fluorspar at its 184 ha, 100%-owned Storuman project. The company would be required to pay SKr500 000 to the Mining Inspectorate prior to the start of mining operations, which would serve as economic security for the rehabilitation measures after the mine was closed.
  • Tertiary says US and Swedish fluorspar projects progressing 2015-12-04
    Aim-listed mineral exploration and development company Tertiary Minerals on Friday reported that it would soon start the next phase of its drilling programme at its US fluorspar project and that its mining permit application for its Swedish project was progressing. Tertiary Minerals MD Richard Clemmey said the company was pleased to be able to report solid progress with its key fluorspar projects – the MB project in Nevada and the Storuman project in Sweden – against a backdrop of challenging market conditions.
  • Approval of Mining Permit Storuman 0000-00-00
    Market News alert Tertiary Minerals PLC

Ronnbacken Information

  • Environmental 2015-08-31
    The Rönnbäcken Nickel Project is expected to carry low risk of acid mine drainage from tailings due to favourable ore and rock properties. The very low sulphide content means there is very low potential for acid mine drainage and acid rock drainage. The content of acid buffering calcite in ore and tailings is in great excess of that required for neutralisation of all potentially generated sulphide induced acid. In addition to nickel, cobalt can be extracted as a valuable co-product. The ore also contains ferro and chromium minerals which potentially might be extracted as by-products. In addition to the exploitation concessions, an environmental permit is also needed in order for a mine to begin operation. An environmental permit application is planned to be filed by year 2015. Within the application, there are a number of mandatory environmental considerations which need to be addressed, including community and stake holder dialogue.
  • Processing 2015-08-31
    Historical testwork was initially carried out by Boliden during the 1970s where a lab and large scale 4000 tonne pilot program, facilitated by test pit mining, achieved 26 to 34% nickel grade and 67 to 73% sulphide nickel recovery. Metallurgical testwork has been undertaken on samples, extracted from drill cores, of the nickel sulphide ores from Rönnbäcken to determine the mineralogical, comminution and metallurgical properties of the various mineralized zones within the deposits. The purpose of the test work program was to develop a process flow sheet that maximises recovery of nickel and cobalt whilst minimizing the incorporation of penalty elements.
  • Mining 2015-08-31
    The mining area includes three major resource deposits to date. The size and position of the deposits are well-suited to conventional open pit drill and blast operations. The ore geometry results in a particularly low stripping ratio of 0.72 (waste:ore), with 12 metre benches and a final pit wall slope of approximately 48-50 degrees depending on deposit area selected for the proposed production rates. It is currently anticipated that ore production will commence simultaneously at Rönnbäcksnäset and Vinberget, with full production expected to be achieved in Year 2. Mining at Sundsberget is then forecasted to commence in Year 5 and reach full production by the time the Vinberget deposit is depleted.
  • Geology 2015-08-31
    The Project is located in the Swedish Caledonian mountains, which were formed approximately 400-510 million years ago. The geology in the Rönnbäcken area includes nickel bearing ultramafic rocks. The ultramafic rocks occur as lenses of various sizes over an area of approximately 15 km2. The complex folding has resulted in local variations in strike and dip. The ultramafic rocks are serpentinized, which is seen in the colour of the weathering surface. The most serpentinized rock is often grey, while more olivine and pyroxene rich rocks have a brownish colour. The rocks vary from massive lenses to compositional layered rocks to erosion products such as serpentinite conglomerates and sandstones. Nickel sulphide mineralization is hosted in the serpentinized ultramafic rocks. The dominating nickel-rich sulphides in the deposits are heazlewoodite, pentlandite, and to a lesser extent millerite.
  • General 2015-08-31
    The Rönnbäcken nickel project comprises several exploration licences and exploitation concessions, which are 100% owned by Nickel Mountain. The Project comprises three low-grade, high-tonnage, nickel-sulphide deposits amenable to open pit mining: Vinberget, Rönnbäcknäset and Sundsberget. The shape and volume of the deposits make them suitable for high tonnage, low cost, open pit mining at a low strip ratio. Nickel Mountain's objective is to establish a mine and concentrator producing 26,000 tonnes of nickel in a high grade nickel concentrate.

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