Pyrophyllite powder is a natural clay mineral composed mainly of aluminum silicate. Here are some key details about it:

Composition: Primarily consists of pyrophyllite, a hydrous aluminum silicate with the chemical formula Al2Si4O10(OH)2.

Physical Properties: It typically appears as a fine, white to pale green powder. It has a slippery feel, similar to talc, and is known for its softness, with a Mohs hardness of 1 to 2.

Uses:

1. Industrial Applications: Commonly used in ceramics, paints, plastics, and cosmetics due to its excellent refractoriness, stability, and ability to improve the smoothness of surfaces.
2. Pharmaceuticals: Used as an excipient in drug formulations.
3. Agriculture: Sometimes utilized as a soil amendment or as a filler in agricultural products.

Advantages:

1. Non-toxic and environmentally friendly.
2. Enhances thermal resistance and provides good electrical insulation.
3. Source: Extracted from natural deposits, primarily found in metamorphic rocks.

Overall, pyrophyllite powder is valued for its versatile applications in various industries due to its unique properties.