Which stone is an example of igneous rock?

Which stone is an example of igneous rock?

• A. Granite
• B. Limestone
• C. Marble
• D. Slate

Answer: (A)

Granite is an example of igneous rock because it forms from the slow crystallization of magma beneath the Earth's surface. This process allows large crystals to develop, giving granite its coarse-grained texture, which is a distinguishing feature of many igneous rocks. The composition of granite generally includes quartz, feldspar, and mica, contributing to its durability and aesthetic appeal, making it a popular choice in residential interior design for countertops and flooring. In contrast, limestone is a sedimentary rock primarily made of calcium carbonate, often forming from the accumulation of shell, coral, and other organic materials. Marble is a metamorphic rock that originates from limestone subjected to high pressure and temperature, altering its structure and mineral composition. Slate is another metamorphic rock, derived from shale, which forms under heat and pressure, typically characterized by its fine-grained texture and ability to split into thin sheets. Unlike granite, neither limestone, marble, nor slate is formed from cooling magma, which solidifies the distinction that granite belongs to the igneous category.

Granite is an example of igneous rock because it forms from the slow crystallization of magma beneath the Earth's surface. This process allows large crystals to develop, giving granite its coarse-grained texture, which is a distinguishing feature of many igneous rocks. The composition of granite generally includes quartz, feldspar, and mica, contributing to its durability and aesthetic appeal, making it a popular choice in residential interior design for countertops and flooring.

In contrast, limestone is a sedimentary rock primarily made of calcium carbonate, often forming from the accumulation of shell, coral, and other organic materials. Marble is a metamorphic rock that originates from limestone subjected to high pressure and temperature, altering its structure and mineral composition. Slate is another metamorphic rock, derived from shale, which forms under heat and pressure, typically characterized by its fine-grained texture and ability to split into thin sheets. Unlike granite, neither limestone, marble, nor slate is formed from cooling magma, which solidifies the distinction that granite belongs to the igneous category.