Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Data on Minerals

Data on mineral s arates in present day volcanic rocks. Since every dating method (including the K-Ar or C systems) can be affected by several geochemical perturbations which may lead to erroneous ages, the best test for the °Th- U mineral isochrons consists in the analysis of presently erupted lavas or historic lavas of well known eruption dates. Rather surprisingly the data obtained on such samples are not so numerous (some examples are illustrated in Fig. 10). Early data showed that, in some cases, there were interlaboratory analytical discrepancies, especially in Th isotope ratios measured on mineral separates extracted from the same lava flows (this was the case for the 1971 lava from Mt. Etna and 1944 lava from Mt. Vesuvius Capaldi and Pece 1981 Hemond and Condomines 1985 Capaldi et al. 1985). This emphasizes the fact that °Th- U mineral analyses... [Pg.140]

Saxena S. K. and Chatterjee N. (1986). Thermochemical data on mineral phases I. The system CaO-MgO-AljOj-SiOj. J. Petrol, 27 827-842. [Pg.853]

Most of the published data on mineral fractionations have been determined by exchange of single minerals with water. This approach is limited by two factors ... [Pg.23]

Methods of coal analysis are given more attention than in most other reviews. Data on mineral matter and trace elements are reviewed, and 116 references to them are included. [Pg.28]

In the following a few pertinent data on mineral equilibria in carbonate, phosphate and silica systems are summarized. The subject has been extensively reviewed elsewhere113. ... [Pg.18]

Other Working Data on Minerals Separation Machines.—If 12-in. impellers are employed the power required to drive one impeller is about 1.75 hp. Larger size impellers may be reckoned as being proportional to the diameter, using the horsepower figure given as a base. The consumption in power with other types of machine is less than this. [Pg.338]

Data on mineral feeds for livestock and poultry and sundry ingredients contained in such feeds are collected by the National Mineral Feeds Association, Inc., of Des Moines. Production and sales figures are available annually to members, and a survey of individual ingredients used has been initiated. [Pg.24]

Data on mineral wool used in housing production , monthly scope of industry. [Pg.31]

Strunz, H. Mineralogische Tabellen. Leipzig Akademische Verlagsgesellschaft. 3rd ed. 1957. Cell dimensions and other data on minerals. [Pg.398]

Mineral Commodity Summaries, published by the U.S. Department of the Interior, U.S. Geological Survey, provide extensive data on mineral production in the United States and the rest of the world. [Pg.357]

This section is divided into four parts. In the first one, appUcation of IR spectroscopy to speciation and coordination of mineral surfaces after grinding and treatment with salt solutions is demonstrated. In the next parts, IR spectroscopic data on mineral-surfactant interactions that are of interest for flotation are reviewed. To date, all the IR spectroscopic methods have been appUed to mineral surfaces. It is interesting that in some cases the data obtained in situ and ex situ on powders and plane surfaces are different. Thus it is also possible to compare the effectiveness of different IR techniques. [Pg.547]

Minerals Yearbook. 1994-. http //minerals.usgs.gov/minerals/pubs/myb.html (accessed July 11, 2010). The Minerals Yearbook is an annual publication that reviews the mineral and material industries of the United States and foreign countries contains statistical data on minerals, including economic and technical trends chapters list approximately 90 commodities and over 175 countries (from Web page). [Pg.442]

Mindat.org http //www.mindat.org/ (accessed July 12, 2010), The site states that it is the largest mineral database and mineralogical reference Web site on the Internet. The site contains worldwide data on mineral properties, localities, and other mineralogical information worldwide. Visitors are invited to search minerals by properties, by chanistry to browse alphabetical and chemical indexes of minerals, or to link to mineral dealers. The site has 38,322 mineral names (including synonyms, varieties, etc.) and 210,495 different localities (from Web page). [Pg.450]


See other pages where Data on Minerals is mentioned: [Pg.145]    [Pg.161]    [Pg.433]    [Pg.198]    [Pg.296]    [Pg.313]    [Pg.9]    [Pg.123]    [Pg.265]    [Pg.353]    [Pg.324]    [Pg.37]    [Pg.92]    [Pg.122]    [Pg.33]    [Pg.798]    [Pg.781]    [Pg.782]    [Pg.783]    [Pg.784]    [Pg.785]    [Pg.786]    [Pg.787]    [Pg.788]    [Pg.773]    [Pg.774]    [Pg.775]    [Pg.776]    [Pg.777]    [Pg.778]    [Pg.779]    [Pg.780]    [Pg.33]    [Pg.113]    [Pg.212]   


SEARCH



Crystallographic Data on Minerals

© 2024 chempedia.info