Define the properties of any four rocks. Enter the results in a table.
||Prois hozhde of
||acidic polymagmatic rock, consists of quartz, feldspar, plagioclase, mica
||Density 2600kg / m3, compressive strength 300MPa
||from black – to traditional maroon with black – to white and gray
||has a polished look
||in construction, decoration
||sedimentary of n , is composed of calcite (sometimes of aragonite), with an admixture of dolomite, clay and sand particles may comprise residues calcareous skeleton fossils
||density in the range of 2700-2900 kg / m3
||The main color is white. But it can be yellowish, light beige, light gray, less often slightly pinkish
||in construction: denser limestone is used for masonry walls, and porous is good for cladding and creating decorative ensembles
||composed of sand grains
||fragile. Strong sandstone connected by quartz masses and mica
||The breed’s color palette includes all shades of the rainbow. The most common greenish sandstone. A brown stone competes with him. Red shades are sandstone, which includes iron oxides. There are black and dark brown options
Make a conclusion: The rocks are different, because formed as a result of various geological processes.
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