Contribution of the Magnetic Susceptibility to the Characterization of the Babouri-Figuil Cretaceous Basin

Ondoa, Augustin Désiré Balla; Ngos, Simon; Ndjeng, Emmanuel; Abolo, Alexis Nyangono; N’Nanga, Alexie

doi:10.4236/ojss.2014.48029

Cited by 10 publications

(2 citation statements)

References 17 publications

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“…Magnetic susceptibility of natural rocks and ores plays important roles either directly or indirectly in many applications, such as oil and mineral explorations [1]- [3], geology [4], climate change and environment assessment [5] [6], mining and metallurgy [7] [8], and archeology [9]. However, magnetic susceptibility of many types of rocks and ores is not isotropic, i.e., the magnitude of magnetic susceptibility of some rocks and ores varies with the orientation of the rocks and ores with respect to the measurement of magnetic susceptibility.…”

Section: Introductionmentioning

confidence: 99%

Mathematical Model of Anisotropy of Magnetic Susceptibility (AMS)

Guo¹

2015

JAMP

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Magnetic susceptibility of natural rocks and ores is important in many applications. In a few rock types magnetic susceptibility is independent of the direction in which a weak magnetic field is applied. Such rocks are magnetically isotropic. In most rock types, however, the magnitude of magnetic susceptibility in a constant weak field depends on the orientation of the magnetic field applied. Such rocks are magnetically anisotropic and such directional variation in magnetic susceptibility with these rocks is termed as anisotropy of magnetic susceptibility (AMS). Although attempts have been made on describing AMS using mathematical models, there is still a need to present a more consistent and united mathematical process for AMS. This paper presents a united AMS model by rationalizing the existing pieces of different AMS models through a consistent approach. A few examples of AMS from some types of natural rocks and ores are also presented to substantiate this united AMS model.

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Section: Introductionmentioning

confidence: 99%

Mathematical Model of Anisotropy of Magnetic Susceptibility (AMS)

Guo¹

2015

JAMP

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“…Outcomes of rock magnetism are useful in various applications, such as structural geology [1] [2], mineralogy and materials [3] [4], climate change [5] [6], environment assessment [7], exploration of mineral resources [8] [9], metallurgy [10], and so forth. As one of the two most important carriers of magnetism in the natural world, magnetic features of hematite have been well studied [11]- [14].…”

Section: Introductionmentioning

confidence: 99%

A Study of Rock Magnetism of High-Grade Hematite Ores

Guo¹

2015

JAMP

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Rock magnetism is useful in various applications. Hematite is one of the two most important carriers of magnetism in the natural world and its magnetic features were mostly studied through laboratory experiments using synthetic hematite samples. A gap exists between the magnetic behaviors of hematite contained in the natural rocks and ores and those of synthetic hematite samples. This paper presents the results of a rock magnetism study on the natural hematite ores from the Whaleback mine in the Hamersley Province in the northwest of Western Australia. It was found that high-grade hematite ores carry a much higher remanent magnetization than induced magnetization. Hematite ores with less than 0.1% magnetite appear to have an exponential correlation between the bulk susceptibility and hematite content in weight percentage, different from the commonly accepted linear relationship between the bulk susceptibility and hematite content obtained from synthetic hematite samples. The new knowledge gained from this study contributes to a better understanding of magnetic behaviors of hematite, particularly natural hematite, and hence applications to other relevant disciplines.

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