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Vanadian allanite-(La) and Vanadian allanite-(Ce) from the Hemlo gold deposit, Ontario, Canada
Mineralogical Magazine, 1991AbstractAllanite-(La) (containing up to 7.80 wt.% V2O3 and with La/ΣREE and La/Ce atomic ratios up to 0.54 and 1.45, respectively) and allanite-(Ce) (up to 8.46 wt.% V2O3) occur in close association with vanadian muscovite, barian tomichite and vanadian titanite in the main ore zone of the Hemlo gold deposit, Ontario, Canada.
Yuanming Pan, Michael E. Fleet
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Annealing studies of fission tracks in allanite
Contributions to Mineralogy and Petrology, 1975The annealing characteristics of fission tracks in allanite have been studied. All the tracks in the mineral fade at 720° C for one hour heating. The activation energy of allanite ranges from 1.4 to 3.4 eV.
Saini, H. S., Lal, Nand, Nagpaul, K. K.
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Low-2V allanite and Mg-bearing allanite from the Kallmorberg mine, Norberg, Sweden
Geologiska Föreningen i Stockholm Förhandlingar, 1975Abstract Two varieties of allanite have been found in the Kallmorberg iron mine. Some optical data and the d-spacings of the specimens are given. Both allanites are completely unaltered and no metamictization has occurred, in spite of their Precambrian age. The content of radioactive elements is low. The rare-earth elements in the skarn rock containing
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Annealing of radiation damage in allanite and gadolinite
Physics and Chemistry of Minerals, 1993Samples of allanite and gadolinite with a range of alpha-recoil damage 0.1 to 3.0 dpa, were annealed in Ar and analysed by X-ray powder diffraction (XRD), high resolution transmission electron microscopy (HRTEM), infrared (IR) and differential thermal analysis (DTA).
J. Janeczek, R.K. Eby
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Economic Geology, 1962
Small irregularly shaped aplitic allanite pegmatite bodies occurring near the contacts of a larger aplitic body with granodiorite are described. Allanite represents a considerable part of the pegmatite, is equally distributed, and can be regarded as a major constituent.
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Small irregularly shaped aplitic allanite pegmatite bodies occurring near the contacts of a larger aplitic body with granodiorite are described. Allanite represents a considerable part of the pegmatite, is equally distributed, and can be regarded as a major constituent.
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MICRO-PIXE RECONNAISSANCE OF ALLANITE AS A PRASEODYMIUM SOURCE
International Journal of PIXE, 1996Praseodymium is one of the most important pigment materials for high-quality china and ceramics but its source minerals are not well known to geologists. Allanite, one of the REE-bearing minerals in nature, has a large coordination polyhedra for cations and favors the larger LREE ions such as praseodymium than other REE-bearing minerals that favor the
SATOSHI MURAO +2 more
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Th-Pb ion-microprobe dating of allanite
American Mineralogist, 2000Allanite, which is a common accessory mineral in a wide variety of rock types, typically contains high concentrations of Th and U; thus, an in-situ method of U-Th-Pb dating of this phase would have broad application. We describe a method to permit Th-Pb ages of allanite to be determined with approximately ±10% accuracy using a high-resolution ion ...
E.J. Catlos +2 more
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Ion-probe determination of rare earths in allanite
Chemical Geology, 1985Abstract The epidote-group mineral allanite is characterised by a total RE content in the region of 20 wt.%, with light RE much more abundant than heavy. Only a few of the RE in allanite are within the range of electron-probe analysis, hence the determination of the complete abundance pattern has hitherto required physical separation and bulk ...
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Spectroscopic characteristics of the allanite
Acta Petrologica Sinica, 2019CHEN Fei +4 more
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