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In optical mineralogy and petrography, a thin section (or petrographic thin section) is a thin slice of a rock or mineral sample, prepared in a laboratory, for use with a polarizing petrographic microscope, electron microscope and electron microprobe. A thin sliver of rock is cut from the sample with a diamond saw and ground optically flat.
Ceramography is the art and science of preparation, examination and evaluation of ceramic microstructures. [1] Ceramography can be thought of as the metallography of ceramics. The microstructure is the structure level of approximately 0.1 to 100 μm , between the minimum wavelength of visible light and the resolution limit of the naked eye.
These thin sections allow for the examination of the internal structure of the ceramics and facilitate the identification of mineral phases, crystalline structures, and textural features. The methodology of ceramic petrography draws upon principles from various fields, including optical mineralogy, thin section petrography, and soil micromorphology
For more detailed analysis of much smaller areas in a thin section, FTIR microscopy can be used for sample inspection. A recent development is the laser microtome, which cuts the target specimen with a femtosecond laser instead of a mechanical knife. This method is contact-free and does not require sample preparation techniques.
Ultramicrotomy is a method for cutting specimens into extremely thin slices, called ultra-thin sections, that can be studied and documented at different magnifications in a transmission electron microscope (TEM). It is used mostly for biological specimens, but sections of plastics and soft metals can also be prepared.
A mass haul diagram where land and rock cuts are hauled to fills Fill construction in 1909 Cut & Fill Software showing cut areas highlighted in red and fill areas shaded in blue. In earthmoving , cut and fill is the process of constructing a railway , road or canal whereby the amount of material from cuts roughly matches the amount of fill ...
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Fragmented bioclastic wackestone A Wackestone in thin section (width of image is 10 mm). Under the Dunham classification (Dunham, 1962 [1]) system of limestones, a wackestone is defined as a mud-supported carbonate rock that contains greater than 10% grains.
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