Mineral characteristics

In addition to ecological considerations concerning bacterial survival in soil, the relationship between desiccation sensitivity and mineral characteristics has relevance to carriers selected for the preparation of bacterial inocula (Kloepper Schroth, 1981 van Elsas Heijnen, 1990 Caesar Burr, 1991). Chao Alexander (1984) explored the potential use of soil-based inoculants for rhizobia. Pesenti-Barili et al. (1991) conducted a comprehensive survey of nine potential carriers for Agrobacterium radiobacter K84, including kaolinite and vermiculite, and concluded that vermiculite was most suitable. 

Published images of serpentine and kaolinite group minerals characteristically consist of one dark-and-light-stripe pair per 0.7 nm, with dark and light bands of approximately equal thickness. 

Laser-Excited Rare Earth Luminescence as a Probe of Mineral Characteristics... 

Essentially all fertilizer phosphorus now is derived from mined ores. (The occurrence, mineral characteristics, mining, and benefici-ation of major phosphate ores were described in some detail in Chapter 23.) Worldwide, about 85 percent of the mined phosphate eventually finds its way into fertilizer.3 As mentioned earlier, the most conservative estimates indicate a sufficiency for hundreds of years at expected consumption levels. Supply problems of the immediate future will relate chiefly to exhaustion of the better ores, with the result that ores of lower grades and higher impurity contents will have to be processed. 

Our description of meteorite mineralogy starts with the minerals characteristic of the calcium-aluminum-rich inclusions (CAIs). The mineralogy of CAIs varies systematically with their composition. The most Al-rich CAIs contain spinel, hibonite, and/or grossite. More rarely, corundum or calcium mono-aluminate is present. As the bulk composition becomes more Si-rich, the melilite solid solution becomes important. With additional Mg and Si in the bulk composition, fassaite and anorthite are present. 

HASTiE ET AL. Alkali Vapor Transport Coal Mineral Characteristics... 

Longstaffe, F. J. Clay Mineral Characteristics of Three Different Types of Oil-Sand, Alberta Oil Sands Technology and Research Authority Agreement 295 (360), Final Report, 1983. 

Substantial effort is required to measure the He diffusivity parameters in a given phase and to determine how those parameters vary with mineral characteristics such as grain size and shape, chemical composition, and defect and/or radiation damage density. Only apatite has been studied in detail, but limited He diffusivity information is available on other minerals as well, as discussed below. 

Kaolinite as a mineral characteristic of continental deposits is present virtually throughout all facies studied. However, variations in its composition during the early stages of diagenesis, as compared to those of chlorite, illite and mixed-layer clays, is of no special diagenetic significance. Because of this, it wUl not be discussed at this stage. 

At temperatures of 1000 C or higher, almost all mineral characteristics are destroyed. If the solids are melted or volatilized they are entirely destroyed. Separation processes by phase separation or distillation can be used. 

Mineral characteristics in transmitted and reflected light are clearly described in standard optical mineralogy texts (Heinrich, 1965 Kerr, 1977). The optical properties of almost all known minerals, with a concise description of optical theory and technique, are given by Fleischer, Wilcox, and Matzko (1984) who emphasize particle-mount analysis. 

O Gorman, J.V. and Walker, P.L. 1971. Mineral characteristics of some American coals. Fuel, 50 135. 

On the other hand, the existence of the channels confers on this group of minerals characteristic properties linked to the dimension of the molecules coming in contact with them. Due to the small dimension of its molecule, water can easily penetrate and, in principle, all molecules of the same size can replace it this is the very definition of zeolitic properties. 

Y. Onikura, and T. Higashi, 1968. Weathering and clay mineral characteristics of volcanic... 

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