Minerals definition

E. M. AHen, "Mineral Definition by HRTEM Problems and Opportunities," Minerals and Reactions at theMtomic Scale, Minerals Society ofMmerica Reviews in Mineralogy, Nov. 1992, Chap. 8. 

A specific example of this would be the weathering of K-feldspar and the formation of kao-linite (see Table 8-1 for mineral definitions), a layer-silicate clay ... 

The clay fraction, which has long been considered as a very important and chemically active component of most solid surfaces (i.e., soil, sediment, and suspended matter) has both textural and mineral definitions [22]. In its textural definition, clay generally is the mineral fraction of the solids which is smaller than about 0.002 mm in diameter. The small size of clay particles imparts a large surface area for a given mass of material. This large surface area of the clay textural fraction in the solids defines its importance in processes involving interfacial phenomena such as sorption/desorption or surface catalysis [ 17,23]. In its mineral definition, clay is composed of secondary minerals such as layered silicates with various oxides. Layer silicates are perhaps the most important component of the clay mineral fraction. Figure 2 shows structural examples of the common clay solid phase minerals. 

Fred M. Allen, Mineral definition by HRTEM Problems and opportunities, ch. 8, 289-333 in Reviews in Mineralogy, Vol. 27, 1992, Minerals and Reactions at the Atomic Scale Transmission Electron Microscopy, Ed. P. R. Buseck. 

Electronegativity, 7,10, 117 Mobility, 400-403 Chlorinated hydrocarbon, 345-352 Chlorite, 104,114 Clay minerals, definition, 102 Complexation, 65, 66 Concentration, 45 Conductance of ions, 80 Conductivity, 81... 

The chemical peculiarities of these minerals are mentioned above. However, the XRD data available at the time of mineral definition also show some very striking features for odinite, which can shed light on the strange chemical features of this verdine mineral. 

DOHP. See Dioleyl hydrogen phosphite DOlP. See Dioctyl isophthalate Dolcymene. Seep-Cymene Doiocron 15-16] Doiocron 32-15] Doiocron 40-13] Doiocron 45-12. See Calcium carbonate Dolomite CAS 16389-88-1 Classification Natural mineral Definition A carbonate of calcium and magnesium Empirical C2CaMgOe Formula CaCOs MgCOa Properties Gray, pink, or wh. color with vitreous luster dens. 2.85 hardness (Mohs) 3.5-4.0 noncombustible... 

Classification Silicate minerals Definition Any of several silicates of varying chem. composition, but similar physical props, and crystalline structure... 

Ross, M. The Asbestos Minerals Definitions, Description, Modes of Formation, Physical and Chemical Properties and Health Risk to the Mining Community, Nation Bureau of Standards Special Publication, Washington,D.C., 1977. 

ClassiTication Complex silicate clay mineral Definition Specific type of Fuller s earth Formuia AljOj ASiOj HjO... 

Definition Mixture of hydrocarbons of mineral or synthetic origin... 

The field of metaHurgy has a unique and frequently very specialized vocabulary. Understanding this language helps to clarify certain concepts and processing steps. A complete dictionary of mining, mineral, and related terms has been compiled (2). The definitions and explanations of key terms foHow. 

Agriculture. Most forages provide insufficient sodium for animal feeding and may lack adequate chloride. Thus salt supplementation is a critical part of a nutritionally balanced diet for animals. In addition, because animals have a definite appetite for salt, it can be used as a deflvery mechanism to ensure adequate intake of less palatable nutrients and as a feed limiter. Salt is an excellent carrier for trace minerals. Salt, either in loose form or as compressed blocks, can be mixed with feed or fed free-choice to improve animal health and productivity (see Feeds and feed additives). 

Clays (qv) are aluminosihcate minerals, some of which have definite chemical compositions. In regard to tar sands, however, clay is only a size classification and is usually deterrnined by a sedimentation method. According to the previous definition of fines, the fines fraction equals the sum of the silt and clay fractions. The clay fraction over a wide range of fines contents is a relatively constant 30% of the fines. 

The usual definition of asbestos fiber excludes numerous other fibrous minerals which could be qualified as asbestiform following the criteria Hsted above. However, it appears the term asbestos has traditionally been attributed only to those varieties which are commercially exploited (1,2). 

Thermoanalytical methods (tga, dta) often enable definite identification of the type of asbestos fibers (Fig. 7). For example, the strong exotherm observed with chrysotile at 830°C can be used as a routine indicator for determining the chrysotile content of talc (4,10). Thermal methods are also usefiil for determining certain mineral contaminants of asbestos fibers, for example bmcite and calcite in chrysotile. 

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