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Physicochemical aspects of allanite flotation
Journal of Rare Earths, 2014Abstract This paper investigated the physicochemical properties of allanite, a RE-silicate, by measuring zeta potential in the absence and presence of three different flotation collectors (benzohydroxamic acid, sodium oleate and dodecylamine). This data was then verified by microflotation experiments and with bubble-particle attachment pictures.
Adam Jordens +3 more
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Geology of Ore Deposits, 2016
The morphology, optical properties, and composition of allanite-(Ce) and allanite-(Y) from raremetal tourmalinite of the Severnyi granitic pluton in the Chukchi Peninsula have been studied, as well as the composition and structure of host metasomatic rocks and the assemblage of rock-forming and accessory minerals.
V. I. Alekseev +2 more
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The morphology, optical properties, and composition of allanite-(Ce) and allanite-(Y) from raremetal tourmalinite of the Severnyi granitic pluton in the Chukchi Peninsula have been studied, as well as the composition and structure of host metasomatic rocks and the assemblage of rock-forming and accessory minerals.
V. I. Alekseev +2 more
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Geological Society of America Bulletin, 1917
Introduction Many observers, both in this country and abroad, have noted the alteration exteriorly of allanite to usually a reddish brown product whose general appearance on casual examination seemed to be closely similar. This alteration is frequently conspicuous in localities where allanite is found at or near the surface in lumps and masses, and is
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Introduction Many observers, both in this country and abroad, have noted the alteration exteriorly of allanite to usually a reddish brown product whose general appearance on casual examination seemed to be closely similar. This alteration is frequently conspicuous in localities where allanite is found at or near the surface in lumps and masses, and is
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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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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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The Canadian Mineralogist, 2002
“Allanite” is a poorly defined collection of species belonging to the epidote group. In the past, “allanite” was defined as merely being lanthanon-bearing, but more recently, it is defined as being Ln-dominant at the A2 site. Species of the allanite subgroup include allanite-(Ce), allanite-(La), allanite-(Y), androsite-(La), dissakisite-(Ce ...
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“Allanite” is a poorly defined collection of species belonging to the epidote group. In the past, “allanite” was defined as merely being lanthanon-bearing, but more recently, it is defined as being Ln-dominant at the A2 site. Species of the allanite subgroup include allanite-(Ce), allanite-(La), allanite-(Y), androsite-(La), dissakisite-(Ce ...
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Sur la teneur en thorium d'une allanite
Bulletin de la Société française de Minéralogie et de Cristallographie, 1952Calcul du coefficient d'absorption des rayons α par l'allanite. Teneur en thorium et précision de la mesure.
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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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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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Monazite–allanite phase relations in metapelites
Chemical Geology, 2010Abstract Calculations of the transition from allanite to monazite-bearing assemblages in typical pelitic bulk compositions have been made using thermodynamic data estimated from oxide sums and inferred from natural parageneses. Calculations in the CFASHPCe and MnNCKFMASHPCe systems place the allanite to monazite transition in the middle amphibolite ...
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