Marble Is Metamorphic Rock From Limestone

It is composed primarily of the mineral calcite caco 3 and usually contains other minerals such as clay minerals micas quartz pyrite iron oxides and graphite.

Marble is metamorphic rock from limestone.

Marble is a metamorphic rock that forms when limestone is subjected to the heat and pressure of metamorphism. The main difference between limestone and marble is that limestone is a sedimentary rock typically composed of calcium carbonate fossils and marble is a metamorphic rock. Marble forms under such conditions because the calcite forming the limestone recrystallises forming a denser rock consisting of roughly equigranular calcite crystals. Metamorphism causes variable recrystallization of the original carbonate mineral grains.

Marble is a metamorphic rock formed when limestone is subjected to high pressure or heat. These rocks are both composed of the same mineral. Usually marble contains other minerals including quartz graphite pyrite and iron oxides. A analyze the samples of sedimentary limestone and metamorphic marble in fig.

Limestone forms when shells sand and mud are deposited at the bottom of oceans and lakes and over time solidify into rock. During metamorphism the calcite limestone recrystallizes forming the interlocking calcite crystals that make up the marble. Form of it when limestone buried deep in the older layers of earth s crust is subjected to heat and pressure from thick layers of overlying sediments. Marble is formed from limestone when the limestone is affected by heat and high pressure during a process known as metamorphism.

How is the texture of these two rocks different limestone martie figure a7 3 1 b figure a7 3 2 shows three metamorphic rocks that had a mudstone. What test could you perform on the rocks to be sure. For instance the small calcite crystals in the sedimentary rock limestone and chalk change into larger crystals in the metamorphic rock marble. Limestone a sedimentary rock will change into the metamorphic rock marble if the right conditions are met.

Although metamorphic rocks typically form deep in the planet s crust they are often exposed on the surface of the earth. The variety of colours exhibited by marble are a consequence of minor amounts of impurities being incorporated with the calcite during metamorphism. These minerals can give marble a pink brown gray green or variegated coloration. Marble marble is a metamorphic rock formed when limestone is exposed to high temperatures and pressures.

Both high temperatures and pressures contribute to recrystallization. Marble is a rock resulting from metamorphism of sedimentary carbonate rocks most commonly limestone or dolomite rock. The resulting marble rock is typically composed of an interlocking mosaic of carbonate crystals. In metamorphosed sandstone recrystallization of the original quartz sand grains results in very compact quartzite also known as metaquartzite in which the often larger quartz crystals are interlocked.