Shale-normalized rare-earths and yttrium (REY SN; Y inserted between Dy and Ho) patterns for detritus-free samples from both the Kuruman and Penge Iron-Formations (IFs) in the Late-Archaean to Early-Palaeoproterozoic Transvaal Supergroup display pronounced heavy rare-earth element (REE) enrichment, and positive anomalies of La SN, Eu SN, Gd SN ...
Field exposures of the 2.48-billion-year-old Kuruman Banded Iron Formation reveal a well-defined hierarchical cycle pattern in the weathering profile that is laterally continuous over at...
Mesobanded lithotypes (band rhythmites) of banded iron-formation (BIF) from the Griquatown and Kuruman Iron Formations of the Asbestos Hills Subgroup (Transvaal Supergroup, South Africa) have been sampled. 142 major and trace element analyses from diamond drill cores, an underground mine and an open pit mine were carried out.
Field exposures of the 2.48-billion-year-old Kuruman Banded Iron Formation reveal a well-defined hierarchical cycle pattern in the weathering profile that is laterally continuous …
Field exposures of the 2.48-billion-year-old Kuruman Banded Iron Formation reveal a well-defined hierarchical cycle pattern in the weathering profile that is laterally continuous over at...
In 1940 Associated Manganese Mines of SA acquired the manganese outcrop "Black Rock" and soon began to mine. After the Kuruman area was surveyed by Dr L.G. Boardman wth geophysical techniques the mines Smartt, ... The base of the Hotazel Formation consists of a bright-red banded iron-formation bed (varieng from massive to fine-grained ...
The Kuruman Iron Formation deposited at the peak-time of BIF (Klein 2005) that was coincident with the transition from the anaerobic atmosphere to the oxygenic atmosphere that fundamentally changed the pathway of life evolution on Earth …
The Kuruman Iron Formation is interpreted to represent shallowing-upwards deposition (initially in deepwater) and is conformably overlain by the Griquatown Iron …
The Kuruman Formation in the Transvaal Supergroup, Northern Cape Province of South Africa, contains several iron and manganese ore deposits, resulting in numerous studies, particularly within the northern Ghaap plateau compartment where most iron and manganese mines are located.
The iron ore/BIF zone is referred to as the Kuruman Formation. The ores found within this formation comprise the bulk of the higher-grade iron ores in the region. Four distinct high-grade iron ore types have been described at Kolomela in the various separate iron ore deposits:
A new baddeleyite U-Pb age of 2442 ± 5 Ma was obtained for the intracratonic Westerberg sill, which intruded banded iron formation of the Kuruman Formation of the Transvaal Supergroup to the south of Kolomela, displaying folding that trends tangentially to the Maremane Dome (Kampmann, 2012).
The Kuruman Formation in the Transvaal Supergroup, Northern Cape Province of South Africa, contains several iron and manganese ore deposits, resulting in numerous studies, particularly within...
Shale-normalized rare-earths and yttrium (REY SN; Y inserted between Dy and Ho) patterns for detritus-free samples from both the Kuruman and Penge Iron-Formations (IFs) in …
In the Kalahari manganese field (an area of roughly 400 km2), three distinct manganese ore units, interbedded with iron formation over a thickness of approximately 150 m, form a succession …
The Kuruman Formation in the Transvaal Supergroup, Northern Cape Province of South Africa, contains several iron and manganese ore deposits, resulting in numerous studies, particularly within...
Field exposures of the 2.48-billion-year-old Kuruman Banded Iron Formation reveal a well-defined hierarchical cycle pattern in the weathering profile that is laterally continuous over at...
The Wolhaarkop Formation grades upwards into undisturbed or partly brecciated and folded ironstones of the Manganore Formation (Van Schalkwyk and Beukes, 1986), which is the local term for the Kuruman Iron Formation, occasionally interlayered with shale of the ca. 2.52–2.43 Ga Asbestos Hills Subgroup (Beukes, 1983, Van Schalkwyk and Beukes ...
The voluminous 2.5 Ga banded iron formations (BIFs) from the Hamersley Basin (Australia) and Transvaal Craton (South Africa) record an extensive period of Fe redox cycling.The major Fe-bearing minerals in the Hamersley–Transvaal BIFs, magnetite and siderite, did not form in Fe isotope equilibrium, but instead reflect distinct formation pathways.
include the Penge Iron Formation-hosted deposit at Thabazimbi and the Kuruman Iron Formation-hosted deposits at Bovenzeekoebaart and Nauga East (Fig. 1). The latter deposit is also considered to be a magmatically induced hydrothermal end member deposit (Gutzmer et al., 2008). This contribution aims to summarize and compare the
In the Kalahari manganese field (an area of roughly 400 km2), three distinct manganese ore units, interbedded with iron formation over a thickness of approximately 150 m, form a succession known as the Hotazel Formation at the stratigraphic top of the Palae oproterozoic Transvaal Supergroup (Beukes, 1983; see Figure 1).
A new baddeleyite U-Pb age of 2442 ± 5 Ma was obtained for the intracratonic Westerberg sill, which intruded banded iron formation of the Kuruman Formation of the …
The modern and specialised ore-mining, -processing and blending techniques at Sishen are explained. Recommended articles. References (87) ... Ages of the tuffaceous horizons in the Kuruman Iron Formation are comparable to those from the Brockman Iron Formation of the Hamersley Province.
The Kuruman Iron Formation is interpreted to represent shallowing-upwards deposition (initially in deepwater) and is conformably overlain by the Griquatown Iron Formation that consists of lithofacies types deposited in a shallow epeiric sea (Beukes, 1984).
Hydrothermal deposits include the Penge Iron Formation-hosted deposit at Thabazimbi and the Kuruman Iron Formation-hosted deposits at Bovenzeekoebaart and Nauga East (Fig. 1). The latter deposit is also considered to be a magmatically induced hydrothermal end member deposit (Gutzmer et al., 2008).
The five zones rich in stilpnomelane lutite (volcanic ash) and chert present in the Kuruman Iron-formation (Fig. 16) can be correlated over the entire strike distance of the Kuruman Iron-formation (Beukes, 1980a) and probably represent volcanic ash time-lines in the basin.
Kuruman South Africa 8491. Contacts: ... Black Rock Mine Operations (BRMO) is a prominent manganese and iron ore mine consist Nchwaning and Gloria mines and is part of Manganese division of ARM Ferrous. ... The average thickness of the HotazelFormation is approximately 75 metres, with the banded iron formation (BIF) hosted manganese orebodies ...
The Hotazel Mine, located near Kuruman in South Africa, was first discovered in 1950. It is an underground mining operation that began production in 1959 and has since been considered a large-scale mining site.
Hydrothermal deposits include the Penge Iron Formation-hosted deposit at Thabazimbi and the Kuruman Iron Formation-hosted deposits at Bovenzeekoebaart and Nauga East (Fig. 1). The …
The five zones rich in stilpnomelane lutite (volcanic ash) and chert present in the Kuruman Iron-formation (Fig. 16) can be correlated over the entire strike distance of the Kuruman Iron-formation (Beukes, 1980a) and prob- ably represent volcanic ash time-lines in the basin.
The Olifantshoek Supergroup is overlain by Dwyka Formation, which forms the basal part of the Karoo Supergroup. At the Tshipi Borwa Mine this consists of tillite (diamictite), which is covered by sands, claystone and calcrete of the Kalahari Group (SLR, 2017c). Tshipi is exploiting the manganese from the banded iron stones of the Hotazel Formation.
