Question

What are the main characteristics of igneous rocks?

Answer 1

The main characteristics of igneous rock are:-

1.Normally contains no fossils 
2.Rarely reacts with acid 
3.Usually has no layering 
4.Usually made of two or more minerals 
5.May be light or dark colored 
6.Usually made of mineral crystals of different sizes 
7.Sometimes has openings or glass fibers 
8.May be fine-grained or glassy (extrusive)

Answer 2

Rocks which are formed when molten rock are liquefied by intense heat and pressure and then cooled to a solid state.

Explanation:

Igneous rocks can be characterised  as follows :-

Characteristics of Igneous Rocks

• Igneous rocks  and its forms include more than one mineral deposit.
• They does not include any  type of fossil deposits.
• They are found as fossil which is deep inside the crust.
• They erupts from the Earth’s surface.
• It is destroyed due to the presence of sheer heat which is produced by  the rocks.
• They have a texture which can be either glassy or coarse.
• These rocks do not react with acids.
• These mineral deposits are found in different sizes and are mostly in the form of patches

Different types of Igneous Rocks

• Igneous rocks are found in different forms based on the cooling conditions.
• They have different compositions which is based on the lava from which they cool.
• The main two categories of igneous rocks are known as extrusive and intrusive rocks.

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