Key minerals ministry of mines and mineral resources. The cape lambert port b development referred to hereafter as the port b development is currently in the pfs stage, which will extend until quarter 4 2008. It will delineate the unexplored iron ore bodies in this area through survey and large scale mapping and then take up assessment of reserves through drilling. The effect rocks and minerals have on our daily lives is not always obvious, but this book will help explain how essential they really are. Marampa iron ore in sierra leone sierra leone news, this. The most common ore is haematite iron oxide, fe 2 0 3. May 27, 20 this presentation contains summary information about marampa iron ore limited marampa and its activities and it is not intended for general circulation or publication and it cannot be reproduced without the prior written consent of marampa. These deposits were developed into medium to moderatesized. Pdf the geology and genesis of high grade hematite ore deposits. From the early 1960s until the civil crisis of the 1990s the iron ore mining sector contributed more than 20 per cent of the gross national product and employed more than 50,000 people, or approximately 15 per cent of the countrys total workforce. The main iron ore deposits in liberia and neighbouring countries.
The proponent for the port b development is pilbara iron pty limited pilbara iron, a wholly owned subsidiary of rio tinto iron ore. It is predicted that iron ore will continue its strong run into 2008 and beyond as. The marampa mine is a brownfield haematite iron ore mine located approximately 150km northeast of freetown in sierra leone, west africa. The station shown here runs on heavy fuel oil and powers london minings ironore operations in marampa, sierra leone. This presentation contains summary information about marampa iron ore limited marampa and its activities and it is not intended for general circulation or publication and it cannot be reproduced without theprior written consent of marampa.
The directorate of geology of the orissa government has decided to take up assessment of the iron ore lying in the northern part of baliapahar iron ore deposit in the sundergarh district. Ever since their discovery in 1904, it has been recognized that the iron formations and associated ore deposits of the cuyuna iron range in eastcentral minnesota fig. In 2012 cape lambert resources decided to sell the mine. Pdf marampa iron occurrence in northern sierra leone is hosted in the. Marampa comprises one mining licence ml052014 comprising. Mineralogy, processing and environmental issues summarizes recent, key research on the characterization of iron ores, including important topics such as beneficiation separation and refining, agglomeration e. Iron formations have been divided into three subtypes gutzmer and beukes, 2009 on the basis of texture and geologic age of the iron formation host. Liberia an underexplored west african iron ore region. The geology, mineral resources of sierra leone and how the resources can.
Interpretive geology of el462011, relative to initial project layout. The geology, paragenesis and reserves of the ores of lead and zinc. The mine is connected to the port at port pepel by an 84 km long 1,067 mm 3 ft 6 in gauge railway. Steel is used to make automobiles, locomotives, ships, beams used in buildings, furniture, paper clips, tools, reinforcing rods for concrete, bicycles, and thousands of other items. The marampa iron ore project marampa is a brownfields hematite iron ore project at the development and permitting stage, and is located 90 km northeast of freetown in sierra leone, west africa figure 1. Nov 26, 2012 marampa haematite iron ore mine, sierra leone mining the marampa mine is a brownfield haematite iron ore mine located approximately 150km northeast of freetown in sierra leone, mining, the project includes a more detailed. Mineralogy of iron ore the mineralogy of iron ore varies from quite simple hematite and quartzite with little of aluminium mineral to hydrated hematite along with complex gangue minerals like hydrated aluminium silicate or kaolinite al 4sio 10oh 8 and trihydratedaluminium oxide or gibbsite aloh 3.
Webelements periodic table iron geological information. Marampa haematite iron ore mine, sierra leone mining the marampa mine is a brownfield haematite iron ore mine located approximately 150km northeast of freetown in sierra leone, mining, the project includes a. Hence, the fifth instalment in this popular conference series had as its theme meeting growing demand. He explicates the thesis with magnetite relicts in the hematite which shows that the hematite is a secondary oxidation product and not the original. Leandi kolver capital and operating costs, as well as the construction schedule for phase 2 of the tonkolili project, in sierra leone, are currently being developed, including rail. Tonkolili iron ore mine mining technology mining news. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext.
The marampa iron ore deposits form part of a greenstone belt with massive beds of specularite schist interstratified with quartzmica schists. Marampa iron ore project location and over view the marampa iron ore project marampa or marampa project is a brown. Ausenco was contracted to provide a program of work which delivers both operational readiness, and a complete and customised training program to support the operation of the marampa beneficiation plant and port facility for london mining in sierra leone. The bands of iron ore are at times highgrade, but are often mixed with a good deal of silica, the whole making an ore too lean for use without concentration. Several iron ore prospects have been identified here by geological. This also applies to iron ores of the nonmagnetic type which after a reducing roast are amenable to magnetic separation. A major historic iron ore producer africas leading producer in the 1970s. The core of the earth, more than 2000 in radius, is composed largely of iron. The mineral industry, in particular iron ore, has long played a crucial role in the nations economic development. Marampa project the marampa iron ore project marampa is a brownfields hematite iron ore project at the development and permitting stage, and is located 90 km northeast of freetown in sierra leone, west africa figure 1. Mineralogy, geochemistry, and economic geology jens gutzmer and nicolas j. Freetown to makeni and visit to the marampa mine site.
Geostatistical investigation of iron ore grade control at. Ironore was discovered in the marampa area in 1926. Bibliography of iron ore resources of the world usgs. In september 2008, the mine at marampa was sold to cape lambert iron ore. The magnetiteapatite ore of the kiruna district, northern sweden. The geology, mineral resources of sierra leone and how. Beukes encyclopedia of life support systems eolss 1. Challenges facing the north american iron ore industry by j. The primary use of iron ore is in the production of iron. Demand for iron ore continues to grow, particularly from chinas iron and steel industry. Approximately 65 per cent of liberia is underlain by archean rocks, the worlds main source of iron ore today. Cape lambert port b development home department of. Tonkolili iron ore mine mining technology mining news and.
Tonkolili iron ore mine geology and reserves marampa haematite iron ore mine, sierra leone the marampa mine is a brownfield haematite iron ore mine located approximately 150km northeast of freetown in sierra leone, west africa. In 20 cape lambert requested a mining license for the mine. Marampa comprises two granted exploration licences el46a2011 239. The mining industry of sierra leone accounted for 4.
The metal is the fourth most abundant element by weight in the earth. Mr peter royce principal advisor environmental approvals rio tinto iron ore expansion projects level 24, 152158 st georges terrace, perth, wa, 6000. Marampa iron ore in sierra leone sierra leone news, this is. Marampa project the marampa iron ore project marampa is a brownfields hematite iron ore project that remains at the development and permitting stage and is located 90 km northeast of freetown in sierra leone, west africa figure 1. Pdf the geology and genesis of high grade hematite ore. Each steel company has its own blast furnace practice and the impact of these impurities varies accor. To support its objective, the geology department at marampa iron ore sl ltd is seeking to employ an experience sierra leonean based exploration geologist. Mineralogy of iron ores of different alumina levels from. Iron is found in other minerals such as magnetite, which is seen as black sands along beaches.
Ever since their discovery in 1904, it has been recognized that the ironformations and associated ore deposits of the cuyuna iron range in eastcentral minnesota fig. Beneficiation of iron ore and the treatment of magnetic iron taconites, stage grinding and wet magnetic separation is standard practice. Iron formation consists of iron ore such as siderite, magnetite, and hematite, with silica in the form of chert, jasper, etc. Dixey, f,the geology of sierra leone, geological society london. Marampa mines is the site of an hematite iron ore mine based in the town of lunsar, port loko district, sierra leone.
Most of the iron produced is then used to make steel. Evans, 2000 the characteristic footwall rocks are trachyandesitic lavas traditionally. The geology and genesis of high grade hematite ore deposits article pdf available in applied earth science imm transactions section b 1121. The main minerals mined in sierra leone are diamonds, rutile, bauxite, gold, iron and limonite. Iron ore iron ore was discovered in the marampa area in 1926. Geological history and genesis of the highgrade iron ore.
Sierra leone is home to three large iron ore deposits. Jorgenson summary this report is derived from a presentation the author presented in late september at the iron ore 2005 conference sponsored by the australasian institute of mining and metallurgy and held in fremantle, western australia. This railway is experiencing problems with the theft of its track, and other obstructions. The first one included magnetic roasting and subsequent low intensity. Geostatistical investigation of iron ore grade control at marampa mine, sierra leone. Two strategies have been chosen for the exploitation of elgedida highmn iron ore containing 46. How a controversial iron ore company went bankrupt and what that means. The geology, mineral resources of sierra leone and how the notably iron ore at marampa. This presentation contains forecasts and forward looking information. In general terms, the largest iron ore deposits are found where paleoenvironmental conditions permitted the accumulation of the largest iron formations. The magnetiteapatite ore of the kiruna district, northern.
Marampa iron ore sl limited, a wholly owned subsidiary of australian based cape lambert resources is engaged in an extensive exploration program within sierra leone. Marampa haematite iron ore mine mining technology mining. The nullagine iron ore mine has closed because of low iron ore prices. Numerous ore types including microplaty hematite and specular hematite and a detailed geological history involving folding, thermal metamorphism and crustal scale shearing. The main iron ores of the hamersley province are hosted with in the archaean to palaeoproterozoic volcanic and sedimentary sequence the mount bruce supergroup which spans a time interval of over 400 ma, from greater than 2770 ma to near 2350 ma. The marampa iron ore project marampa or marampa project is a brown. At the moment august 2014 the mine is still available for sale. Challenges facing the north american iron ore industry. The primary ore has an estimated tonnage of 92 million tons at 37. Beukes rand afrikaans university, south africa keywords. In october 2014, timis bought the marampa iron ore mine from london mining, which had gone.
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