Results 251 to 260 of about 3,487,130 (296)
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Mineral solution-interface chemistry in minerals engineering
Minerals Engineering, 1993Abstract In the treatment of sulphide ores, the reactions occurring in several processes like wet grinding, flotation, collectorless flotation, leaching/bioleaching and in adsorption mechanisms, for example the interaction of thiol collectors with oxidation-reduction reactions, play a dominant role. To optimize the conditions for metallurgical yield (
K S E Forssberg
exaly +2 more sources
1970
Matter may exist in three states, the solid, the liquid, and the gaseous. Most minerals are solid, but some materials considered here, such as petroleum and natural gas, are fluids. Liquids and gases are ‘fluids,’ i.e. unlike solids they flow under the action of gravity: a gas entirely fills the space containing it, whereas a liquid may not, but may be
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Matter may exist in three states, the solid, the liquid, and the gaseous. Most minerals are solid, but some materials considered here, such as petroleum and natural gas, are fluids. Liquids and gases are ‘fluids,’ i.e. unlike solids they flow under the action of gravity: a gas entirely fills the space containing it, whereas a liquid may not, but may be
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1988
Matter may exist in three states: solid, liquid and gaseous. A mineral is a naturally occurring inorganic substance which has a definite chemical composition, and which commonly, but not always, is crystalline. Most minerals are solid, but some ‘minerals’ such as native mercury are normally liquid in their natural state, and others, such as natural gas,
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Matter may exist in three states: solid, liquid and gaseous. A mineral is a naturally occurring inorganic substance which has a definite chemical composition, and which commonly, but not always, is crystalline. Most minerals are solid, but some ‘minerals’ such as native mercury are normally liquid in their natural state, and others, such as natural gas,
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Emphasizing Mineral Chemistry in an Analytical Chemistry Unit
Journal of Chemical Education, 1995An analytical chemistry laboratory unit that illustrates principles and procedures used by mineral processing industries.
Jeffrey G. Dunn +2 more
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2016
Biominerals are minerals which are formed in an organism under the control of genes; these genes encode matrix components or proteins needed for enzymatic activity, trafficking, or other cellular activities. They often differ from the thermodynamically most stable form that is found in the non-biological environment.
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Biominerals are minerals which are formed in an organism under the control of genes; these genes encode matrix components or proteins needed for enzymatic activity, trafficking, or other cellular activities. They often differ from the thermodynamically most stable form that is found in the non-biological environment.
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Chemistry and Photochemistry of Mineral Dust Aerosol
Annual Review of Physical Chemistry, 2008It has become increasingly clear that heterogeneous and multiphase chemistry of tropospheric aerosols can change the chemical balance of the atmosphere. In this review, we focus on recent laboratory studies of the heterogeneous and multiphase chemistry and photochemistry of mineral dust aerosol, a large mass fraction of the tropospheric aerosol ...
David M, Cwiertny +2 more
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The Role of Mineral Aerosols in Tropospheric Chemistry
1996Mineral aerosols are a significant component in the Earth and atmosphere system. These aerosols are mainly emitted from arid and semi-arid areas, which cover about one third of the earth’s land surface. Estimate of the global source of mineral aerosol is of ~2000 Tg yr−1 (d’Almeida et al., 1991).
Zhang, Y. +3 more
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The Crystal Chemistry of Sulfate Minerals
Reviews in Mineralogy and Geochemistry, 2000Sulfur is the fifteenth most abundant element in the continental crust of the Earth (260 ppm), and the sixth most abundant element in seawater (885 ppm). Sulfur (atomic number 16) has the ground-state electronic structure [Ne]3 s 2 3p 4 , and is the first of the group VIB elements in the periodic table (S, Se, Te, Po).
F. C. Hawthorne +2 more
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The chemistry and genesis of opaque minerals in kimberlites
Physics and Chemistry of the Earth, 1975Abstract Detailed electron-microprobe analyses of zonal trends in the spinel mineral group in kimberlites show that the early formed spinels are either highly enriched in the series picrochromite-chromite, or alternatively in the series MgAl2O4FeAl2O4; in both compositional types, progressive enrichment trends induced by solid-liquid or solid-gas ...
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