An Integrated Exploration Approach to the Sishen South Iron Ore Deposit, Northern Cape Province, South Africa, and Its Implication for Developing a Structural and/or Resource Model for These Deposits

Petrography, Sedimentology and Geochemistry of Rocks and Sediments from Three Key Localities from the South-East Region of the Yaoundé Group (Centre Region, Cameroon): Implications for Rutile Exploration

“…The correlation matrix of CaO with TiO 2 is positive and suggests that the elements to be present in rutile in a very low amount as suggested by the chemistry of the global fraction and rutile concentrate of Matomb. In addition, the low concentration of MgO in sediments and high in all the rocks types (Table 4) suggests Mg to come from amphibolite or garnet in rocks as reported in previous works [29].…”

Palaeoproterozoic banded iron formationhosted high-grade hematite iron ore deposits of the Transvaal Supergroup, South Africa

“…The deposit is made up of several smaller ore bodies and is currently mined at Kolomela Mine under the ownership of Kumba Iron Ore. From December 2013 to December 2014 the mine produced 11.6 Mt of ore from three pits and Kolomela's life of mine was estimated at 21 years (Kumba annual results, 2014). The general stratigraphy of the Asbesheuwels Subgroup and the overlying Gamagara Formation and the ore types at Welgevonden (Alchin et al, 2008), are similar to those encountered at the Sishen deposit. The only BIF present at Welgevonden appears to be that of the Kuruman Iron Formation, with the Griquatown Iron Formation having been removed by erosion (Alchin et al, 2008).…”

“…The only BIF present at Welgevonden appears to be that of the Kuruman Iron Formation, with the Griquatown Iron Formation having been removed by erosion (Alchin et al, 2008). The Gamagara Formation lithologies are truncated by the Dwyka diamictite (Carney and Mienie, 2003;Alchin et al, 2008), and have not had the Transvaal Supergroup lithologies thrust over them as occurs in other parts of the Maremane Dome (Fig. 4C).…”

“…The main structural characteristic in the west of the Welgevonden area is the Wolhaarkop Dome, an overturned anticline replicating the larger Maremane Dome, which occurs in the east of the deposit (Alchin et al, 2008). The Campbellrand Subgroup dolostones, which form the basement of the ore bodies, are exposed at surface in the Wolhaarkop Dome, with ore bodies occurring along the flanks of the dome (Alchin and Botha, 2006).…”

“…6d) (e.g. Van Schalkwyk and Beukes, 1986;Carney and Mienie, 2003;Alchin et al, 2008). The exception is in the Hotazel Formation-hosted ores, where brecciated and conglomeratic ores are generally less abundant or absent (Chisonga, 2012).…”