Gaoual (Kankodi) Property Map
The Gaoual property has been explored by GIO and formerly by Kumba Iron Ore (KIO). KIO’s metallurgical report on surface sample is stating that the Iron Ore is mainly composed of Hematite, magnetite and Goethite. The surface samples have been observed under microscope and are composed of iron ooids. The ooids are mainly hematite and cemented together by goethite.
The results on drill holes samples are showing the same oolitic structure with hematite but cemented together with mainly quartz and magnetite seems to be replaced by siderite. In both sets of samples, there is a high level of phosphorous (0.5%). GIO’s exploration is confirming the composition of the deposits with Fe content of an average of 59% and high P levels. A Phosphorous removal process has been carried on by a world known laboratory and are very promising: 68% Fe, 0.98% Al2O3, 0.026% P, 0.003% S and 0.33% SiO2.
Guinea Iron Ore is mobilizing to mine and ship by Mid-2012 about 200,000 tons of iron ore under offtake agreement.
Gaoual Property – Facts
• 867 km² of licensed land.
• Located in northwest Guinea between the villages of Foula Mori and Dombiadji.
• Nearest large population centre is Gaoual (65 km southeast of the property).
• Within 100 km of modern, multi-user rail lines.
• Potential to be a 3 to 5 billion tonne resource.*
• High grade potential of between 52-59% FeT.
Gaoual Property – Licence Area Iron Mineralization
Iron mineralization within the license area occurs in the upper Ordovician sequence. Detailed geology for the Gaoual Property comes from diamond drill logs and geologic reports. This drilling was carried out in three areas referred to as Orion 2, Orion 3 and Orion 4 from south to north. Orion 3 and 4 were drilled along a four km strike length and two holes at Orion 2 were drilled four km further south.
Source: Gaoual Licence Map NI-43-101-2011
Two types of iron-bearing sedimentary rocks are recognized; chemically precipitated iron formation composed of finely bedded silica and iron minerals, or Banded Iron Formation (BIF), and ironstone composed of oolitic chamosite-siderite-goethite with clay and detrital constituents (Gross, 1980). Both types have four different sedimentary facies; oxide, silicate, carbonate and sulphide. Iron formation or BIF’s are divided into Lake Superior and Algoma types, the former is cherty oolitic and predominantly oxide and silicate facies and the latter is cherty and predominantly oxide and carbonate facies. Most global iron production is from BIF.
Ironstones are divided into Clinton and Minette types, the former comprises oolitic hematite-siderite-chamosite and is predominantly oxide and silicate facies and the latter is oolitic siderite-chamosite and predominantly carbonate facies. Ironstones have a higher iron content than BIF. Iron mineralization on the Gaoual Property is classified as Clinton type oolitic hematite.
Iron mineralization within the property consists of oolitic hematite in one or more beds within a sequence of lower Ordovician clastic sediments. Oolitic hematite deposits typically contain elevated contents of phosphorus, alumina and silica as clay, gangue and cement. Mineralization is widespread and preliminary indications suggest it occurs as two types; non-magnetic hematite-siderite and magnetic hematite-magnetite-goethite. Two large outcrop areas were delineated by KIO where the mineralization occurs along or oblique to bedding planes that dip 150 to the southwest.
Gaoual Property – Photo Gallery