Petrographic Microscope Diagram
It is contrasted with mafic rocks which are relatively richer in magnesium and ironfelsic refers to those rocks rich in silicate minerals magma and rocks which are enriched in the lighter elements such as silicon oxygen aluminium sodium and potassium.
Petrographic microscope diagram. Mechanical weathering includes pressure expansion frost wedging root wedging and salt expansionchemical weathering includes carbonic acid and hydrolysis dissolution and oxidation. Routine optical and mechanical maintenance of compound microscopes can ensure that your microscope works well for years. The basic instrument for petrographic examination of ore minerals or opaque minerals is the ore microscope which is similar to a conventional petrographic microscope in the system of lenses polarizer analyzer and various diaphragms. Information and files by greg mchone updated 21 february 2013.
Oil shales can be classified by their composition. The objective of this chapter is to evaluate some of the proposed classifications of sedimentary carbonate rocks and to present suggestions for naming and describing them. In geology felsic refers to igneous rocks that are relatively rich in elements that form feldspar and quartz. With some bh chch2 and other models.
52 weathering and erosion. Quartz is one of the most abundant minerals and as a major constituent in many rocks it is an important rock forming mineralit is estimated that about 12 of the mass of the earths crust is made of quartz. After working teaching and playing with most of the student and benchtop sized microscope makes and models from the mid 1960s to 1990s that were available in the usa my favorites are the various versions of the olympus bh2. Bedrock refers to the solid crystalline rock that makes up the earths outer crust.
Metallurgical coke is the major product of coal conversion. By far the most important use of coal is in combustion mainly to provide heat to the boilers of electric power plants. In addition techniques for gasifying and liquefying coal into fuels or into feedstocks for the chemical. Weathering is a process that turns bedrock into smaller particles called sediment or soil.
Coal utilization combustion of coal or its conversion into useful solid gaseous and liquid products. Oil shale formation takes place in a number of depositional settings and has considerable compositional variation. Optical properties of ore minerals.
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