## Properties of Marble Stone: All you Need to Know

Marble properties are essential when it comes to identification of rocks and while using in home at different place. Marble stone is a natural material hence each piece differs from the other and gives each tiles its own unique appearance. Properties of marble stone include hardness, colour, fracture, luster, compressive strength, etc.

##### Also Read : Marble Stone Flooring: All You Need to Know
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### 01. Formation of Marble:

Marble is a metamorphic rock. It is formed from limestone by pressure and heat in the earth crust due to geological processes. Marble is formed as a result of the recrystallization of limestone under the extreme pressure and temperature of geologic processes. The effect of this process is the creation of stone with a very rigid crystalline structure and small but definite porosity.

### 02. The Hardness of Marble:

Marble is less porous but stronger than limestone, but less durable than granite. Rocks are rated on the Mohs hardness scale which rates the rocks on the scale from 1 to 10. Rock with hardness 1-3 are called soft rocks from 3-6 are called medium hardness rocks and 6-10 are called hard rocks. Marble has a hardness of 3-4 on the Mohs hardness scale. As a result, marble is easy to carve and that makes it useful for producing sculptures and ornamental objects and hence popularly used in temples since ancient times.

### 03. Colour:

Marble is usually a light-coloured rock. The marble that contains very few impurities such as clay minerals, iron oxides, or bituminous material can be bluish, grey, pink, yellow, or black in colour.

Marble having an extremely high purity with a bright white colour is the very useful marble. It is often mined, crushed to powder and processed to remove many impurities. The resulting product is called “whiting.”

### 04. Compressive Strength:

The compressive strength of marble is 115.00 N/mm2 as good as M10 concrete.

### 05. Durability:

Marble is hard, sound and dense stone.

### 06. Porosity:

Marble is more porous as compared to granite as lemons, wine and vinegar will get absorbed into marble and cause permanent stain. Hence it is less stain resistant.

### 07. Acid Resistance:

Marble can’t resist acid or acidic foods. Its colour and texture will get changed when in contact with acidic contents.

### 08. Luster:

The luster of marble is due to interaction of light with the surface of marble.  Luster of marble is dull to shining to subvitreous.

### 09. Fire Resistance:

The marble is not considered flammable hence marble is found to be a fire – resistant material.

### 10. Use of Marble:

Marble has been used since ancient times in sculpture as well as, as a decorative construction material and hence more properly used in temples. Marble is used for outdoor sculpture. It is also used in exterior walls, flooring, decorative features, stairway, kitchen countertop, cupboard and walkways etc. The use of marble depends upon its quality.

Marble stone is an ideal material for building because of durability i.e long life and resistance to weather cycles, and less maintenance.

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