Gneissic (pronounced "nice-ick") refers to a type of rock that has undergone intense pressure and heat, causing it to recrystallize and form distinct layers or bands. Gneiss typically consists of minerals such as quartz, feldspar, mica, and amphibole, and is characterized by its banded appearance, with layers of different colors and textures. Gneiss is commonly found in regions of the Earth's crust that have undergone significant tectonic activity, such as mountain ranges and regions of continental collision. It is often used as a decorative stone in construction and landscaping due to its unique appearance.
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