A group of parallel cleavages can be seen in a photograph of biomica under orthogonal polarized (left) and single polarized (right) mirrors.

Moreover, the ecological aspect of mica mining has garnered attention in recent years. While mica extraction provides economic benefits, particularly in developing countries, it often raises concerns regarding child labor and environmental degradation. Advocacy for ethical sourcing of mica has become essential, prompting several organizations to promote sustainable mining practices. As consumers become more aware of the origins of their products, there is a growing demand for responsibly sourced mica, ensuring that its extraction does not compromise the well-being of communities and ecosystems.

Before using modified plastics, it is necessary to fully understand their physical and chemical properties as well as processing characteristics to ensure that the selected materials meet product design and production requirements.

3. Construction Materials Due to its fire-resistant properties, non-metallic mica powder is utilized in construction materials, including drywall, roofing shingles, and fireproof coatings. This usage not only enhances the safety of buildings but also improves the overall quality of construction products.

Natural mica powder and synthetic mica powder also have great differences in electrical insulation, mechanical properties, chemical stability, application range and cost. Natural mica powder has good electrical insulation, but the volume resistivity is lower than that of synthetic mica. Synthetic mica powder has better electrical insulation properties, high volume resistivity and stable dielectric constant, and is suitable for high performance electrical insulation materials. The hardness of natural mica powder is relatively low (2-3), and it has good elasticity and peeling property. The hardness of synthetic mica powder is higher (between 3 and 4), and the tensile strength and compressive strength are better than that of natural mica powder. Natural mica powder is stable in acid-base solution, but it is easy to decompose at high temperature. Synthetic mica powder is stable to acid and base at room temperature, but will be slowly corroded by sulfuric acid above 300℃. Better thermal stability, not easy to release gas. Natural mica powder is widely used in electrical appliances, welding rods, rubber, plastics, paper making, paint and other fields. Synthetic mica powder is mainly used in high-end electrical insulation materials, aviation, aerospace, national defense industry and other high-tech fields. Because synthetic mica powder needs to be produced through complex chemical processes, its production cost is usually higher than that of natural mica powder. Therefore, in the market, the price of synthetic mica powder is often higher than that of natural mica powder. However, with the continuous progress of production technology and the gradual emergence of scale effects, the price of synthetic mica powder is expected to gradually decrease.

3. Electrical Insulation Mica flakes exhibit excellent electrical insulating properties, allowing them to be used in electrical applications, such as capacitors and insulators.