2025-02-02 16:39:33
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What is the difference between granite and Gneiss? Ask Other Questions
Granite and gneiss are both types of rocks that are commonly used in construction and as decorative stone. However, there are several differences between the two:

1. Composition: Granite is an igneous rock, meaning that it is formed from molten magma that cools and solidifies. It is primarily composed of quartz, feldspar, and mica. Gneiss, on the other hand, is a metamorphic rock, meaning that it is formed from other rocks through heat and pressure. Gneiss commonly forms from granite or other igneous rocks, and is typically composed of quartz, feldspar, and mica as well, but with a more layered or banded appearance.

2. Appearance: Granite has a very uniform appearance, with small grains of minerals evenly distributed throughout the rock. It typically has a speckled or flecked appearance with various colors of crystals visible. By contrast, gneiss has a more banded or layered appearance, with distinct layers of different mineral composition.

3. Strength and durability: Both granite and gneiss are extremely durable and resistant to weathering, making them popular choices for building and outdoor applications. However, gneiss is typically stronger and more resistant to wear than granite, due to its layered structure.

4. Use: Granite is commonly used for countertops, flooring, and decorative purposes due to its attractive appearance and durability. Gneiss, on the other hand, is typically used for landscaping, as decorative stone, or as a building material in high-stress applications such as bridge abutments and retaining walls.
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