Description

Biotite CAS NO 1302-27-8 is a common phyllosilicate mineral belonging to the mica group, recognized for its perfect basal cleavage, dark color, and vitreous luster. Its layered structure and chemical composition make it a valuable industrial material with unique physical and chemical properties. This mineral is essential for manufacturers and researchers in sectors such as geology, construction, and composite materials.

Application

• Geological Research & Standards: Used as a reference mineral in petrology and geochronology studies.
• Construction Materials: Acts as a filler and reinforcing agent in asphalt, roofing materials, and rubber products to improve durability.
• Pigments & Coatings: Provides pearlescent effects and enhances the mechanical properties of paints and coatings.
• Cosmetic Industry: Utilized in makeup products like eyeshadows and nail polishes for its shimmering, light-reflective qualities.
• Drilling Fluids: Serves as a weighting agent and viscosity modifier in oil and gas well drilling muds.
• Composite Materials: Incorporated into plastics and polymers to improve thermal stability and reduce flammability.
• Soil Science: Studied as a natural source of potassium and as an indicator mineral in soil analysis.
• Decorative Stone & Jewelry: Processed for use in ornamental stones and as an accent in jewelry design.

Basic Information

Product Name	Biotite
CAS No.	1302-27-8
Molecular Formula	K(Mg,Fe)3(AlSi3O10)(F,OH)2
Molecular Weight	Varies (Complex silicate structure)
Synonyms	Black Mica; Iron Mica; Magnesium Iron Mica; Dark Mica; Biotite Mica; Mica Group Mineral; Phyllosilicate Mineral
EINECS	215-108-5

Quality Control

Our Biotite is sourced and processed to meet stringent quality parameters for industrial applications. We ensure batch-to-batch consistency through rigorous testing for parameters such as mineralogical composition, particle size distribution, and impurity content. A Certificate of Analysis (COA) detailing specific lot specifications is available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep the container sealed to minimize exposure to atmospheric moisture and dust.

Specification

Item	Specification
Appearance	Dark brown to black flakes or powder
Identification (XRD)	Complies
Particle Size (Typical)	Contact for details
Loss on Drying	< 2.0 %
Heavy Metals (as Pb)	< 20 ppm
Silica (SiO2) Content	> 35 %

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.