Mineralogy mineralogical classification

Pyroxenes are poly silicates ( inosilicates in the mineralogical classification), crystallizing, respectively, in the monoclinic clinopyroxenes spatial groups C2lc, Pljlc, P2ln) and orthorhombic systems orthopyroxenes spatial groups... 

The major mineralogical classifications associated with clays are summarized in Fig. 7 [18]. Fortunately as ceramists, we are more concerned with the properties of clays than their mineralogy and most often we classify them by use. 

Fig. 7 Mineralogical classifications associated with clay minerals [12,18,22]...

Arenite/wacke Unlike many igneous rocks it is difficult to find a simple relationship between the mineralogy of sandstones and their chemical composition. For this reason the geochemical classification of sandstones does not mimic the conventional mineralogical classification of sandstones based upon quartz-feldspar-lithic fragments. Rather it differentiates between mature and immature sediments. 

Table 8 Matrix material groups/chemical-mineralogical classification... 

It was characteristic of the classificatory criteria employed in mineralogical classifications that they allowed primarily for physical properties and only secondarily for chemical ones. However, the disappearance of a distinct class of stones in Bergman s classification, one traditionally distinguished from the earths because of its... 

Minerals are most commonly classified on the basis of the presence of a major chemical component (i.e., anion or anionic complex) into several mineral classes such as, for instance, native elements, sulfides and sulfosalts, oxides, carbonates, sulfates, phosphates, silicates, etc. Today, there exist two main mineralogical classifications of minerals according to either... 

Igneous rocks can be classified according to their chemical or mineralogical composition. Chemical classification distinguishes acid, intermediate, basic, and ultrabasic rocks. Mineralogical classification uses the types (see also Fig. 1.2) ... 

Several sub-classification.s of epithermal preciou.s-metal deposits have been proposed mineralogy, host-rock composition and elemental association (Lindgren, 1928), gold-silver ratios of metal weights (Ferguson, 1929 Nolan, 1933), mineral paragenesis (Nishiwaki et al., 1971), and production ratios of metals (Heald-Wetlaufer et al., 1983). 

Meteorites General classification into stony, stony-iron and iron, each with an interesting mineralogy, notably the carbonaceous chondrites... 

Diaryl pyrrolopyrroles (DPPs), 79 441-443 commercial, 79 443t Diarylthallium(III) derivatives, 24 634 Diaspore, 2 345t, 347, 426 classification, 2 422 decomposition sequence, 2 392, 421 mineralogical and structural properties of, 2 423t... 

Table 4.2 summarizes this basic classification and terminology of silicates. It is worth remembering that the term infinite refers here to an atomic scale of measurement, and does not imply that the chains extend to infinity in the mathematical sense of the word The terminology surrounding the silicates and clay minerals, in common with other mineralogical terms, has never been fully systematized, and so the names given are often ill-defined, or not unique to a... 

Each of these solid phases can be described in terms of their mineralogy. This classification scheme is based on crystal structure and chemical composition. The most common minerals found in marine sediments are listed in Table 13.2. Most are silicates in which Si and O form a repeating tetrahedral base unit. Other minerals common to marine sediments are carbonates, sulfates, and oxyhydroxides. Less common are the hydrogenous minerals as they form only in restricted settings. These include the evap-orite minerals (halides, borates, and sulfates), hydrothermal minerals (sulfides, oxides, and native elements, such as gold), and phosphorites. 

The chemical classification of silicates is based on their multiplicity and type of structural arrangement. It partly differs from the classification commonly adopted in mineralogy (table 5.2). 

Liebau E (1982). Classification of silicates. In Reviews in Mineralogy, vol. 5, P. H. Ribbe (series ed.), Mineralogical Society of America. 

The geochemical classification using major oxides shows that the samples used in this study plot in the litharenite field, and, implies that they are mineralogically submature. Major-element concentrations point to significant weathering effect in the source area of the sample set. Provenance analyses, based on major-and trace-element compositions suggest... 

Classification of Igneous Rocks Using Lithogeochemistry Data, Essential Rock Mineralogy, and Projective Geometry in a Streckeisen Ternary Diagram Approach... 

The following list is a presentation of all minerals, mineral series, and mineral groups described in standard mineralogy texts and references as occurring in fibrous, acicular, or needlelike forms. The presentation follows the outline given in The System of Mineralogy of J. D. Dana and E. S. Dana (7th ed. Palache, Berman, and Frondel, eds.). The silicates and aluminosilicates follow the classifications of Rock Forming Minerals (Deer, Howie, and Zussman, eds.). 

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