Question

Is granite a permeable rock?

Answer 1

Hint: Granite is a rock that contains quartz, alkali feldspar, and plagioclase as it is formed from the magma that has a higher content of silica and alkali metal oxides. Permeable means the substance has holes or spaces between them. When we pour water on the substance, if the water gets absorbed into the substance then it is permeable, but if the water is retained on the surface of the substance then it is non-permeable.

Complete step by step answer: Permeable means the substance has holes or spaces between them. When we pour water on the substance, if the water gets absorbed into the substance then it is permeable, but if the water is retained on the surface of the substance then it is non-permeable.
Granite is a rock that contains quartz, alkali feldspar, and plagioclase as it is formed from the magma that has a higher content of silica and alkali metal oxides. The magma will cool down slowly and then solidify.
Granite rock has very poor permeability because there are no pores or space between them, which means that if we pour water over the granite the water will remain on the surface, this is known as poor primary permeability. But when the granite has cracks and fractures, then it becomes permeable and it is known as secondary permeability.
The density of the granite rock ranges between 2.65 to 2.75 $g/c{{m}^{3}}$

Note: The melting point of the granite rock is very high and it ranges between 1215 to 1260 degrees Celsius, and in the presence of water it strongly reduces. Around 72% of granite is silica ($Si{{O}_{2}}$).