Composition and origin of lateritic nickel ore at Tagaung Taung, Burma

Schellmann, W.

doi:10.1007/bf00206438

Cited by 31 publications

(36 citation statements)

References 2 publications

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“…The Tagaung-Myitkyina Belt comprises ophiolitic material found outcropping on the eastern bank of the Irrawaddy. These rocks are reportedly typical Tethyan ophiolitic mantle rocks (serpentinized harzburgites) (Searle et al, 2017), and in places are mineralized, hosting the Tagaung Taung nickel laterite mine (Schellmann, 1989). The Tagaung-Myitkyina Belt may be part of the Eastern Belt of ophiolites, typified by the Jurassic age of the Myitkyina ophiolite (Liu et al, 2016), given by their regional association with Late Jurassic radiolarian cherts and Albian-Cenomanian limestones (Mitchell et al, 2012).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

The crustal architecture of Myanmar imaged through zircon U-Pb, Lu-Hf and O isotopes: Tectonic and metallogenic implications

et al. 2018

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The Tethys margin in central and eastern Asia is comprised of continental terranes separated by suture zones, some of which remain cryptic. Determining the crustal architecture, and therefore the geological history, of the Eastern Tethyan margin remains challenging. Sited in the heart of this region, Myanmar is a highly prospective but poorly explored minerals jurisdiction. A better understanding of Myanmar's mineralization can only be realized through a better understanding of its tectonic history, itself reflected in at least four major magmatic belts. The Eastern and the Main Range Provinces are associated with the Late Permian to Early Triassic closure of Palaeo-Tethys. The Mogok-Mandalay-Mergui Belt and Wuntho-Popa Arc are a response to the Eocene closure of Neo-Tethys. However, magmatic ages outside these two orogenic events are also recorded. We present new zircon U-Pb, Lu-Hf and O isotope data from magmatic rocks across Myanmar, which we append to the existing dataset to isotopically characterize Myanmar's magmatic belts. Eastern Province Permian I-type magmatism has evolved Hf (-10.9 to-6.4), while Main Range Province Triassic S-type magmatism also records evolved Hf (-13.5 to-8.8). The Mogok-Mandalay-Mergui Belt is here divided into the Tin Province and the Mogok Metamorphic Belt. The Tin Province hosts ca. 77-50 Ma magmatism with evolved Hf (-1.2 to-15.2), and  18 O of 5.6-8.3 ‰. The Mogok Metamorphic Belt exhibits a more complex magmatic and metamorphic history, and granitoids record Jurassic, Late Cretaceous, and Eocene to Miocene phases of magmatism, all of which exhibit evolved Hf values between-4.6 and-17.6, and  18 O between 6.3 and

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Section: Accepted Manuscriptmentioning

confidence: 99%

The crustal architecture of Myanmar imaged through zircon U-Pb, Lu-Hf and O isotopes: Tectonic and metallogenic implications

et al. 2018

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“…The compositions of such ores are available in the literature. We selected data obtained at various levels in alteration profiles (ore beds) with a significant amount of iron oxide in order to document varied Fe/Ni ratios corresponding to different levels in the alteration profile from Oman (Al Kirbash, 2016), Barro alto and Santa Fé, Brazil (Trescases andOliveira,1981), Oregon, USA (Hotz, 1967), Burma (Schellmann, 1989) and Cameroon (Yongue-Fouateu et al 2006).…”

Section: A36 Iron Oresmentioning

confidence: 99%

Bronze Age iron: Meteoritic or not? A chemical strategy.

Jambon

2017

Journal of Archaeological Science

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International audienceBronze Age iron artifacts could be derived from either meteoritic (extraterrestrial) or smelted (terrestrial) iron. This unresolved question is the subject of a controversy: are some, all or none made of smelted iron? In the present paper we propose a geochemical approach, which permits us to differentiate terrestrial from extraterrestrial irons. Instead of evaluating the Ni abundance alone (or the Ni to Fe ratio) we consider the relationship between Fe, Co and Ni abundances and their ratios. The study of meteoritic irons, Bronze Age iron artifacts and ancient terrestrial irons permit us to validate this chemical approach. The major interest is that non-invasive p-XRF analyses provide reliable Fe:Co:Ni abundances, without the need to remove a sample; they can be performed in situ, in the museums where the artifacts are preserved. The few iron objects from the Bronze Age sensu stricto that could be analyzed are definitely made of meteoritic iron, suggesting that speculations about precocious smelting during the Bronze Age should be revised. In a Fe:Co:Ni array the trend exhibited by meteoritic irons departs unambiguously from modern irons and iron ores. The trend of Ni/Fe vs Ni/Co in different analysis points of a single object corroded to variable extents provides a robust criterion for identifying the presence of meteoritic iron. It opens the possibility of tracking when and where the first smelting operations happened, the threshold of a new era. It emphasizes the importance of analytical methods for properly studying the evolution of the use of metals and metal working technologies in our past cultures

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“…Lateritic weathering and supergene nickel enrichment developed on ultramafic rock has been studied extensively in many part of the world (Schellmann, 1989;Barros de Olievera et al, 1992;Gleeson et al, 2004;Thorne et al, 2009). Characteristic of the laterite ore resulting from chemical weathering of these rocks are influenced by the nature of parent rock, climatic condition, topography, and time (Freyssinet et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Study on mineralogy and chemistry of the saprolitic nickel ores from Soroako, Sulawesi, Indonesia: Implication for the lateritic ore processing

Sufriadin¹,

Idrus²,

Pramumijoyo³

et al. 2015

J. Appl. Geol.

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An investigation of mineralogy and chemistry of saprolitic nickel ores developed on ultramafic rock with different serpentinization degree from Soroako, Sulawesi has been conducted using X ray diffraction, thermal analysis, FTIR, and ICP-AES. The implication for the processing of these ores under acidic media was also studied. Weathering of unserpentinized peridotite in the Soroako west block produces saprolitic ore containing minerals such as relict olivine, goethite, quartz, talc with minor serpentine and smectite; whereas the weathered materials overlaying serpentinized peridotite in the Petea area are mainly composed of residual serpentine with lesser chlorite, maghemite, and remnant pyroxene and amphibole. Chemical analysis determined by ICP-AES demonstrates that west ore is higher in Si, Mg, and Ni, as compared to that Petea ore. Conversely, Fe and Al concentrations are higher in Petea ore than in west block ore. SEM-EDX examination reveals that olivine, talc, serpentine and goethite are the Ni-bearing phases occurring in west block ore; while serpentine is the principal host for Ni in the Petea ore. Chemical leaching under sulfuric acid reveals that olivine has highest dissolution rate in the west ore followed by serpentine; while talc, pyroxene, and iron oxides have slow dissolution rates. In contrast, serpentine in Petea ore is easily dissolved and is followed by chlorite; whereas amphibole, pyroxene, and maghemite are difficult to leach. Quartz is present in both ores and it seems to be undissolved during the chemical leaching. It is shown that Ni recovery from Petea saprolitic ore is higher than that of West Block ore.

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Composition and origin of lateritic nickel ore at Tagaung Taung, Burma

Cited by 31 publications

References 2 publications

The crustal architecture of Myanmar imaged through zircon U-Pb, Lu-Hf and O isotopes: Tectonic and metallogenic implications

The crustal architecture of Myanmar imaged through zircon U-Pb, Lu-Hf and O isotopes: Tectonic and metallogenic implications

Bronze Age iron: Meteoritic or not? A chemical strategy.

Study on mineralogy and chemistry of the saprolitic nickel ores from Soroako, Sulawesi, Indonesia: Implication for the lateritic ore processing

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