Download Clays and Clay Minerals in Natural and Synthetic Systems by B. Velde PDF

By B. Velde

Show description

Read or Download Clays and Clay Minerals in Natural and Synthetic Systems PDF

Best mineralogy books

Microbial Processing of Metal Sulfides

The appliance of microbiological the way to the extraction of metals from minerals is supported by way of a number of bioleaching and biooxidation procedures working in numerous websites over the area. This ebook info the elemental elements of the method with specified emphasis on contemporary contributions concerning the chemical and microbial points of the bioleaching method and using microorganisms within the therapy of complicated ores and concentrates.

Introduction to Planetary Science: The Geological Perspective

This textbook is meant for use in a lecture direction for students majoring within the Earth Sciences. Planetary technological know-how presents a chance for those scholars to use a variety of material bearing on the Earth to the learn of alternative planets of the sun procedure and their significant satellites.

Handbook of Petroleum Processing

This largely up-to-date moment version of the already necessary reference pursuits learn chemists and engineers who've selected a occupation within the advanced and crucial petroleum undefined, in addition to different execs simply coming into the who search a entire and obtainable source on petroleum processing.

Metals and Society: An Introduction to Economic Geology

This booklet is a accomplished evaluate of financial geology for the overall geologist and someone else drawn to the minerals and the worldwide provide of uncooked fabrics. It contains a few thought-provoking statements and questions for dialogue on globalisation and present practices within the minerals undefined.

Additional resources for Clays and Clay Minerals in Natural and Synthetic Systems

Example text

To have the same solubilities (Krauskopf, 1959). Solutions are saturated with amorphous silica at 100-160 ppm at p H < 9 (Krauskopf, 1959). Experi- mentalists have not been able to precipitate quartz or another crystalline form solution below 8OoC. Harder and Flehmig (1970) formed quartz from an amorphous silica-iron precipitate in solutions containing silica concentrations below those of amorphous silica solubility at temperatures less than 8OOC. Mackenzie and Gees (1971) were able to crystallize quartz on abraded grains.

Synthesis and stability experiments at high pressure (1-8Kb) indicate that the greatest solid solution from muscovite toward celadonite is found in substituting Mg in the octahedral site and compensation by adding Si4' site. 2+ in the tetrahedral 80% of this substitution is effected at 8-10Kb pressure and 200°C. This solid solution diminishes with pressure. Thus this substitution should be minor in micas from clay mineral environments (Figure 6). If we consider the solid solution in the mica compositions between muscovite-MgFe3+ celadonite (Figure 7) we see that significant amounts of celadonite are present in solid solution at 25OoC, 2Kb pressure.

6 - . 00(Si,A1)40,0(OH)2. 00. The charge, distributed between 44 Figure 10. Natural illite compositions plotted in 3R2 - 2R coordinates. 3 - MR 3 octahedral and tetrahedral sites, is usually compensated by potassium and + sodium ions, more questionably by Ca2+ or H 0 3 (Hower and Mowatt, 1 9 6 6 ) . Two main compositional trends are evident in looking at this information. The first is the tendency to have a low lattice charge relative to mica, therefore a montmorillonite-type compositional solid solution, the second is the R 3 I V = Si substitution typical of phengite micas.

Download PDF sample

Clays and Clay Minerals in Natural and Synthetic Systems by B. Velde

by Thomas

Rated 4.40 of 5 – based on 29 votes