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Biotite, known as black mica, is a darker variety of mica that is rich in iron and magnesium. Its color ranges from brown to black, and it is typically opaque rather than transparent. Biotite is primarily found in igneous and metamorphic rocks and tends to form in larger sheets compared to muscovite. While biotite is not as widely used as muscovite, it plays a crucial role in geology, as it is often studied for its weathering processes, which can provide insights into the history of the earth’s crust. In some cases, biotite is used in the production of heat-resistant materials and is also studied for its potential applications in the fields of biomaterials and environmental science.


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mica dye powder_does mica powder stain skin