Minerals are some of the most beautiful substances on Earth, because they are always arranged in an orderly geometric pattern. Minerals of the same type always have the same geometric arrangement of their atoms. Minerals are classified by key chemical constituents; the two dominant systems are the Dana classification and the Strunz classification.
Definition of classification of minerals Each mineral species is a unique, naturally occurring combination of chemical composition and crystal system; e.g., graphite is hexagonal carbon and diamond is isometric carbon, and halite is isometric sodium chloride.
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A rock is any naturally occurring solid mass or aggregate of minerals or mineraloid matter. It is categorized by the minerals included, its chemical composition and the way in which it is formed. Rocks are usually grouped into three main groups: igneous rocks, metamorphic rocks and sedimentary rocks.Rocks form the Earth's outer solid layer, the crust.
Rock, in geology, naturally occurring and coherent aggregate of one or more minerals. Such aggregates constitute the basic unit of which the solid Earth is composed and typically form recognizable and mappable volumes. Rocks are commonly divided into three major classes according to the processes that resulted in their formation. These classes are (1) igneous rocks, which have solidified from.
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Definition of abnormality, classification systems and demographics of psychological disorders The poster is going to outline the definition of abnormality and describe two diagnostic classification systems whilst referencing the diagnostic criteria for Schizophrenia and an overlook of its subtype catatonic schizophrenia.
Nomenclature for Trace Element Classification. We have already grouped elements into two classes, major elements and trace elements (Figure 1). In addition, there are many ways of classifying trace elements. Examples are: 1) Siderophile elements: elements that concentrate in metallic iron such as Ni, Co, Os, Ir. Chalcophile elements.