Results 121 to 130 of about 795 (182)

Dopant redox stability as a design principle for selective CO₂ electroreduction on Cu.

Phys Chem Chem Phys
Barberini F, Barile A, Restuccia P, Atanasio P, Passeri D, Di Tommaso D, Mazzaro R, Pasquini L, Righi MC.   +8 more
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Tourmaline with Cassiterite Inclusions

The Journal of Gemmology, 2020
International ...
Delaunay, Aurélien, Fritsch, Emmanuel, Stephant, Nicolas, Hennebois, Ugo   +3 more
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Xanthan gum based investigations into the surface chemistry of cassiterite and beneficiation of cassiterite tailings

Mineral Processing and Extractive Metallurgy Review, 2020
The surface chemistry of cassiterite mineral and selective dispersion-flocculation-flotation studies on cassiterite tailings have been investigated using xanthan gum.
C. Nambaje, L. Mweene, S. Subramanian, K. Sajeev, M. Santosh   +4 more
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Cassiterite as a Carrier of Palaeomagnetism

Nature, 1965
IN an attempt to extend the scope of palaeomagnetism when investigating endogenous geological processes1,2 the magnetic properties of high-temperature minerals were investigated. The main objective was to find other minerals not yet examined from this point of view which would be amenable to palaeomagnetic examination.
V. HANUŠ, M. KRS
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OH defects in cassiterite

Mineralogy and Petrology, 2004
Two infrared (IR) spectral types are discerned in cassiterites with OH defect concentrations ranging from several wt. ppm H2O in synthetic melt-grown samples up to 0.017wt.% in natural samples of hydrothermal origin. Spectrum type I is characterised by one sharp band centred at 3255cm-1, type II spectra reveal an additional band group centred around ...
Losos, Zdenek, Beran, Anton
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The influence of point defects on the floatability of cassiterite, I. Properties of synthetic and natural cassiterites

International Journal of Mineral Processing, 1987
Abstract Cassiterite is an n-type semiconductor whose properties may be altered by aliovalent doping. Such changes are noted in color, electrical conductivity, electrokinetic behavior and, as will be demonstrated in Parts II and III, by flotation behavior.
S.B. Balachandran, G. Simkovich, F.F. Aplan   +2 more
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The Zero Point of Charge of Cassiterite

Bulletin des Sociétés Chimiques Belges, 1986
AbstractThe zero point of charge (ZPC) of cassiterite was investigated by measuring the electrophoretic mobility, solution equilibrium, and flotation response as a function of solution pH. The ZPC was shown to lie at pH 2. The potential determining ions for cassiterite are H+ and OH−.The effect of anionic and cationic collectors on the zeta potential ...
Fouad Taha, A. M. El‐Roudi, M. B. Saleh   +2 more
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Fractionation of Zr and Hf in cassiterite

Chemical Geology, 1983
Abstract Analytical data on Zr and Hf in cassiterite samples from various genetic types of deposits are reported. Two genetic groups of cassiterites can be distinguished by their Zr/Hf ratios, which are ∼5 and ∼30 for samples from pegmatites and hydrothermal vein mineralizations, respectively.
P. Möller, P. Dulski
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Electrokinetic properties of Cassiterite

Australian Journal of Chemistry, 1953
Simultaneous ?-potential and surface conductivity measurements have been made on three samples of cassiterite (SnO2) in water, in solutions of HCl, alkalis, inorganic salts, and the flotation collector reagent sodium cetyl sulphate. It is probable that the intrinsic surface charge of cassiterite in water is negative and that it is due to surface ...
DJ O'Connor, AS Buchanan
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