Metamorphic rocks are formed from other materials already present on the earth’s surface. Metamorphic rock is formed by a combination of minerals, mostly calcite and dolomite. It is the crystallised form of calcium.
The original sedimentary rock, like limestone or dolomite undergo extreme heat and pressure during the metamorphic processes that form marble. The minerals in the rock are re-crystallized and rearranged by these conditions, giving marble its characteristic interlocking crystals.
Marble can have a variety of crystal sizes, shapes, and arrangements depending on the intensity and duration of the metamorphic processes. The crystals can be very large in some marbles, and are easily seen. This gives the marble its distinctive appearance. Other times, crystals are smaller, and more densely packed. This results in a smoother surface.
Calcite crystals are present in the marble, which gives it an attractive pattern and unique colouration. Crystals reflect light and give the stone a distinctive lustre. For Marble Tiles, contact https://www.irwintiles
Mineral impurities can be found in marble, along with its main mineral composition of calcite and dolomite. The impurities in marble can produce a variety of colours and patterns. Mineral impurities in marble can include micas and graphite.
The presence of impurities and the type can differ depending on geological conditions, and the location in which the marble formed. Different types of marble will have different levels of impurities. This can result in different colours, patterns and other characteristics.
Limestone is formed by the accumulation of shells, algae and coral on seafloor and their compression over many thousands of years. Shells and bone fragments from ancient creatures can survive the process. You can see some fossils on your tiles or marble floors.
