Analysis of fluoride in rocks and an application to exploration

Kesler, Stephen E.; Loon, J.C. Van; Bateson, J.H.

doi:10.1016/0375-6742(73)90027-7

Cited by 30 publications

(4 citation statements)

References 8 publications

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“…This method is a modification of the procedure proposed by Kesler, Van Loon, and Bateson (1973). A 50-mg (minus 80-mesh) sample is fused with 15 sodium hydroxide pellets for 10-20 min in a muffle furnace at 620°C.…”

Section: Modified Naoh Fusion Methodsmentioning

confidence: 99%

Journal of Research of the U. S. Geological Survey, 1977, volume 5, issue 5

1977

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Section: Modified Naoh Fusion Methodsmentioning

confidence: 99%

Journal of Research of the U. S. Geological Survey, 1977, volume 5, issue 5

1977

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“…given by Yoshida et al (1981Yoshida et al ( , 1986. Fluorine was determined using a selective ion-electrode method (Kanisawa, 1979) adapted from the procedure outlined by Ingram (1970) and Kesler et al (1973) . The Sr isotopic ratios were deter mined by a solid-source mass spectrometer (VG 354) at Geological Survey of Japan .…”

Section: Summary Of Petrographymentioning

confidence: 99%

Low-pressure fractional crystallization origin of the tholeiitic basalts of the Deccan plateau, India.

Aoki

Yoshida

Aramaki

et al. 1992

J. Min. Petr. Econ. Geol.

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Petrographic descriptions and mineralogical data have been presented together with analyti cal results of major and trace elements for tholeiitic picritic basalt-ferrobasalt suite from the Deccan plateau, India. The compositional relation between coexisting augite and pigeonite was elucidated. Wide variations of incompatible element abundances were recognized among the samples but their patterns of relative enrichments parallel one another. The rock suite was probably produced by partial melting of mantle peridotite with abundances of incompatible elements rather close to primordial abundances. However, the Sr isotopic abundances were highly variable in the source, as also were alkali and alkali earth elements to a lesser extent. Fractional crystallization under low-pressure conditions was a major process in the evolution of this rock sequence. Olivine (FO85-80) was predominant in the differentiation and plagioclase was probably also involved together with augite.

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“…The fluoride electrode has been used to measure fluorine in the U.S.G.S. reference rocks (Ficklin, 1970;Ingram, 1970) and to measure fluorine in rocks associated with tin mineralization (Kesler et al, 1973). Farrell (1974) used Ficklin's method to measure fluorine in soils after partial and total extraction in the fluorine province of Derbyshire, England.…”

Section: Selective Ion Electrodesmentioning

confidence: 99%

Analytical methodology in the search for metallic ores

Ward¹,

Bondar²

1979

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Atomic absorption and emission spectrography are the methods of analysis most widely used in geochemical exploration. Development of nonflame atomizers, particularly electrothermal devices and reduction cells for atom and metal-hydride generation, has expanded the application of atomic absorption spectrometry by pushing detection limits of many elements well into the parts per billion range and by reducing detection limits for others, such as As, Se, Te, and Sn, to levels useful in lithogeochemical surveys. The recent promotion of inductively-coupled plasma sources for excitation, as well as other variations, such as use of echelle gratings, has increased the number of available spectrographic methods for multielement surveys and has simplified the application of partial extraction techniques in emission spectrography. Other methods that require mass spectrometers and gas chromatographs are being used to measure volatile indicator elements and compounds such as helium and sulphur gases. Analytical techniques, including those based on voltammetry, ion-selective electrodes, and the use of partial or selective extractions, are finding increased application as analytical tools and as aids in determining metal speciation better to understand geochemical processes of dispersion and concentration. Current interest in uranium exploration has sparked a major effort to develop new analytical methods or improve existing ones for the determination of uranium and related radionuclides. Exploration geologists may now choose conventional fluorimetry, delayed neutron counting, X-ray fluorescence, laser-induced fluorescence, and nuclear-fission track techniques for the determination of uranium. The choice will depend on sensitivity required, sample media being analyzed, chemical species of the uranium to be determined, turnaround time required, and cost considerations. Two of the methods described, conventional fluorimetry and laser-induced fluorescence, can be adapted for use in the field. While recent developments of new techniques and apparatus have greatly expanded the number of usefUl analytical techniques in exploration geochemistry, each has its own problems and limitations as well as its applications. A panacea for analytical problems does not yet exist, except perhaps in the person of the skilled analyst, whose ingenuity in developing and applying new methods augments diligent application of tried and true procedures. Resume Pour l'exploration geochimique, les methodes d'analyse les plus frequemment employees sont la spectrophotometrie d'absorption atomique et la spectrographie d'emission. La mise au point de methodes spectrophotometriques sans flamme, en particulier d'appareils electrothermiques et de cellules reductrices permettant d'obtenir des atomes et des hydrures metalliques, a elargi les applications de la spectrophotometrie d'absorption atomique, en poussant les limites de detection de nombreux e1ements jusqu'a la gamme des parties par milliard, et en reduisant les limites de detection d'autres elements, comme A...

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Analysis of fluoride in rocks and an application to exploration

Cited by 30 publications

References 8 publications

Journal of Research of the U. S. Geological Survey, 1977, volume 5, issue 5

Journal of Research of the U. S. Geological Survey, 1977, volume 5, issue 5

Low-pressure fractional crystallization origin of the tholeiitic basalts of the Deccan plateau, India.

Analytical methodology in the search for metallic ores

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