Mineralogy

Download Bentonites: Geology, Mineralogy, Properties and Uses by Ralph E. Grim and Necip Güven (Eds.) PDF

By Ralph E. Grim and Necip Güven (Eds.)

Show description

Read or Download Bentonites: Geology, Mineralogy, Properties and Uses PDF

Best mineralogy books

Characterization of Minerals, Metals, and Materials 2015

This number of lawsuits specializes in the characterization of minerals, metals, and fabrics in addition to the applying of characterization effects at the processing of those fabrics. Papers hide subject matters comparable to clays, ceramics, composites, ferrous metals, non-ferrous metals, minerals, digital fabrics, magnetic fabrics, environmental fabrics, complex fabrics, and smooth fabrics.

Gold and Other Precious Metals: From Ore to Market

The literature on gold deposits has elevated exponentially up to now 8 years. The books on gold geology and exploration disguise in general sure geographical parts (for instance, Gold in Canada, and so forth. ), or they comprise papers provided at symposia and congres­ ses. The strategy usually lacking in different texts is the single which mixes geology with mineral­ ogy and the restoration difficulties and which addresses the earth scientist in addition to the ex­ tractive metallurgist.

Gemstones and Their Origins

Every one gem deposit-whether of fundamental beginning within the guardian rocks; or secondary as alluvial placers in valley flooring, river gravels, or the sand of oceanic cabinets­ provides an eloquent chronicle of the Earth's existence tale. It unearths to the specialist the prodigious approaches which shaped the current crust of our planet, of which this quantity discloses a small yet intriguing element.

Metals and Society: An Introduction to Economic Geology

Within the moment version Steve Kesler (University of Michigan) has been further as an writer to rewrite a few chapters. the incentive for this revised version is to extra intensively deal with monetary matters that encompass the exploitation of mineral assets. This emphasis supplies the publication a special personality.

Additional info for Bentonites: Geology, Mineralogy, Properties and Uses

Example text

Most of the bentonites in the Prairie Provinces carry calcium as the major exchangeable cation, but sodium bentonites are known also. Cristobalite is a common minor component of the bentonites. There appears to be no correlation between the physical appearance of the bentonites or the character of the associated beds and the presence of calcium versus sodium as the dominant exchangeable cation. Scott and Booker (1968) state that there is a marked increase in the sodium content of the bentonites toward the base of the Bearpaw formation, suggesting that environment of accumulation may have influenced the type of bentonite.

Electron-optical observations indicate similar morphological features for the smectite particles in all three samples. The common aggregates consist of fiber-like units that are formed by extensive curling of thin layers. Such an aggregate is shown in Fig. 7 obtained from sample 10. The aggregate resembles a piece of a moss, and i t is soft and flexible. The term “mossy aggregates” is, therefore, adopted to designate this type of smectite aggregate. Another less common form of smectite particles consists of compact lamellar aggregates.

Very recently, discoveries of possible economic significance have been made at numerous places in Parani where De Paiva Netto and Nascimento (1956) reported a bentonitic clay in a Tertiary bituminous shale in the Paraiba Valley. Mineralogical studies. 2) from Ponta Alta indicate the presence of a smectite carrying calcium and magnesium as the main exchangeable cations. Quartz, feldspars, and micas are the common impurities in the sample. Smectite particles occur predominantly in the form of laths, S-type lamellae, and Wyoming-type foliated aggregates.

Download PDF sample

Rated 4.89 of 5 – based on 20 votes