Definition: Pyrolusite is a mineral that is often used in the production of ceramics and other materials. It is composed of silicon dioxide, which is a crystalline solid that forms a lattice structure. Pyrolusite has a high refractive index and is known for its unique optical properties. Pyrolusite can be found in various minerals such as feldspar, quartz, and talc. Its mineralogical composition allows it to exhibit several interesting physical and chemical properties, including high refr
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