Results 161 to 170 of about 3,525 (209)

Dislocation etching in molybdenite

Journal of Materials Science, 1974
An etchant to reveal the non-basal dislocations on the (0001) faces of MoS2 single crystals has been established. Evidence concerning the ability of this etchant to reveal the sites of non-basal screw dislocations is also given.
M. K. Agarwal, Babu Joseph
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Granite molybdenite systems

Economic Geology, 1981
Stockwork molybdenite deposits in the western conterminous United States may be divided into two groups based on the chemistry of the source pluton: granodiorite systems and granite systems. These two groups show significant differences in age, tectonic setting at time of formation, and orebody geometry.Granite molybdenite systems develop in, and ...
Felix E. Mutschler, Ernest G. Wright, Steve Ludington, Jeffrey T. Abbott   +3 more
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Dislocations in Molybdenite

Journal of Applied Physics, 1965
The formation of the different types of dislocations in molybdenite is discussed. An interpretation based on the occurrence of growth faults in natural crystals is advanced which explains the existence of dissociated and undissociated dislocations.
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Structural change of mechanically activated molybdenite and the effect of mechanical activation on molybdenite

Metallurgical and Materials Transactions B, 2004
denite is also used as an important raw material of oxidization roasting for the preparation of ammonium molybdate in molybdenum industry [7,8] and as one of the main naturally metallic minerals associated with gold. [9] Furthermore, the extraction of nonferrous metals from sulfide ores belongs to the technically difficult and economically important ...
Huiping Hu, Qiyuan Chen, Zhoulan Yin, Pingmin Zhang, Guanhua Guo, Günter Gottstein   +5 more
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On rhenium content of molybdenite of Mount Mulat (Predazzo) and other Italian molybdenites

Geochimica et Cosmochimica Acta, 1963
Abstract Determinations of rhenium content in some Italian molybdenites were made by a colorimetric method. It seems possible that the rhenium content may be correlated to the deposit formation temperature.
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Electrical Properties of Molybdenite

Proceedings of the Physical Society. Section B, 1953
The following electrical properties of natural crystals of MoS2 have been measured: conductivity, Hall coefficient and thermoelectric power over the temperature range - 183°C to 500°C, and the room temperature change of conductivity in a magnetic field. It was found that the majority of the specimens were p-type semiconductors.
R Mansfield, S A Salam
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Real Space Crystallography in Molybdenite

Nature Physical Science, 1973
IN this letter we report further observations made during our development of a new electron diffraction technique, which was introduced under the title of ‘;Real Space Crystallography’;1. This technique involves the use of bend contour patterns, which are produced in thin domed or saucer-shaped foil specimens when an aperture is inserted in the back ...
G. J. TATLOCK, J. W. STEEDS
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THE DETECTION OF VACANCIES IN MOLYBDENITE

Applied Physics Letters, 1967
The etch-decoration method developed to detect lattice vacancies in graphite has been extended to the detection of lattice vacancies in molybdenite. Observations indicate that vacancies occur at sites from which a molybdenum atom is missing and that etch pits developed from these vacancies may be several layers deep; however, gold decoration can reveal
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Reflectivity measurements on molybdenite

Economic Geology, 1966
The spectral reflectivity of molybdenite was measured on an unpolished cleavage flake, a polished vertical section, and a polished basal section, both in air and in oil. From these measurements the refractive index and the absorption were calculated. Reflectivity peaks were found at 625 nm in air measurements and at 620 nm in oil measurements.
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The Electrical Conductivity of Molybdenite

Physical Review, 1923
Electrical conductivity of molybdenite (Mo${\mathrm{S}}_{2}$) as a function of voltage and temperature.---Measurements of the currents through narrow flat strips cut perpendicular to the crystallographic $c$-axis gave results for the range from 0\ifmmode^\circ\else\textdegree\fi{} to about 200\ifmmode^\circ\else\textdegree\fi{} C, in agreement with the
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