Question

Characteristics of igneous Rock

Answer 1

Answer:

•They are hard and compact.

•Normally contains no fossils.

•Rarely reacts with acid.

•Usually has no layering.

•Usually made of two or more minerals.

•May be light or dark colored.

•Usually made of mineral crystals of different sizes.

•Sometimes has openings or glass fibers.

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Answer 2

Answer:

igneous rock are also called primary rock as they were formed first over the earth surface .ex - basalt

the igneous rocks are formed due to intensive heat and pressure .