Marble And Granite
Marble And Granite
There are four types of stone materials commonly used today: sedimentary rocks, metamorphic rocks, igneous rocks and artificial rocks.
Sedimentary rocks are formed by breaking off debris from organisms such as glaciers, rivers, winds, oceans and plants to form rock deposits that have been consolidated over millions of years at high temperatures and pressures.
The main mineral composition is calcite.Mineral grains and crystal structures are rare, smooth and small - grained.The hardness varies, and some compact limestone can be polished.The colors are black, gray, white, yellow and brown.Limestone contains lime formed from seawater, hence its name.
Formed from quartz particles (sand), usually pale brown or red in structure, mainly containing silicon, calcium, clay, and iron oxide.
Made of a variety of talc, very soft.It is wear-resistant tight ore, not easy to produce stains.
Contains natural fossils of Marine shellfish and plants, thought to be limestone.
5.Travertine (porite) :
It is usually cream or light red and is made from calcite deposited in hot springs.Water flows through the stone, creating holes that are often filled with synthetic resin or cement that otherwise require a lot of maintenance.Of limestone and marble.
Metamorphic rocks are rocks that naturally metamorphosed from one type of rock by mixing high temperature and pressure with minerals.Qualitative changes may be recrystallization, texture changes, or color changes.
It is recrystallized limestone, which softens at high temperature and pressure and recrystallizes to form marble as the minerals change.The main components are calcium and dolomite, many colors, often have a distinct pattern, many mineral particles.Mohs are between 2.5 and 5.
Marble is divided into three categories:
Dolomite: magnesite (calcium carbonate magnesium) content of more than 40%
Magnesite: magnesite (calcium carbonate magnesium) content in 5% to 40%.
Calcite: magnesite (calcium carbonate magnesium) content less than 5%
A metamorphic rock formed from claystone, sedimentary shale (sometimes quartz), and the mineral grains are fine, thin, brittle, and usually black, gray, or green.
The most common colors are green and brown.Mohs are between 2.5 and 4.It contains large amounts of magnesium and is derived from igneous rocks.Recrystallization and diamond polishing are sometimes poor.
Igneous rocks are formed mainly from volcanic materials, such as magma.Liquid magma below the surface cools and solidifies.Mineral gases and liquids seep into the rock to form new crystals and colors.
It is mainly made of quartz (35%), feldspar (45%) and potassium and is usually dark in color.
A brief introduction to marble and granite products:
Marble and granite products on display: