Mica
Natural Insulator. Thermal Stability
Didwaniya Group supplies premium-grade mica—available as coarse flakes, fine powders and processed sheets—renowned for exceptional electrical insulating properties, thermal stability and chemical inertness. Sourced and processed under strict quality controls, our mica meets the purity and consistency demands of electronics, paints & coatings, cosmetics and industrial applications worldwide.
Mica is a group of phyllosilicate minerals characterized by their thin, flexible, and highly regular layered (sheet-like) crystal structure. These sheets split easily along basal planes, producing glittering flakes and films with a pearly to vitreous luster. Common commercial varieties include muscovite (light-colored) and phlogopite (brown to black), each offering excellent dielectric strength, chemical inertness and resistance to heat and weathering—properties that make mica a valued raw material across many industrial sectors.
Didwaniya Group sources mica from carefully selected mines and partner suppliers, then processes it into controlled-size flakes, splittings and micronized powders tailored to customer specifications. Our material handling and quality checks ensure low contamination, uniform particle size distribution and moisture control so that end-users receive a consistent product optimized for performance and ease of use.
Characteristics
Appearance (structure): Thin, flexible lamellar sheets or plate-like flakes; ranges from coarse splittings to fine micronized powders.
Color: Pearly white, silver, pale brown, tan, green or brownish-black depending on mineral variety and impurities.
Taste / Smell: Inert — no odor or taste (mineral).
Chemical nature (general formula): Potassium aluminum silicate hydroxide (representative formula for muscovite); compositions vary by mica type (e.g., phlogopite contains magnesium/iron).
Hardness (Mohs): ~2–3 (soft, easily split into thin sheets).
Cleavage: Perfect basal cleavage yielding continuous, elastic sheets.
Specific gravity: Approximately 2.7–3.2 depending on variety and grade.
Thermal stability: High thermal resistance; stability depends on grade and type — commonly stable for many industrial uses across several hundred degrees Celsius (grade-dependent).
Electrical properties: Excellent dielectric and insulating properties; widely used where high electrical resistivity is required.
Particle size: Supplied in a range from coarse flakes (mm scale) to micronized powders (<50 µm) per customer specification.
Mass fraction of moisture, %, not more than: 2.0
Purity / contaminants: Supplied with controlled low-iron and low-clay fractions for high-grade applications (specified per batch).
Application
Mica’s combination of electrical insulation, thermal resistance and platy morphology makes it highly versatile: used as an electrical insulator and substrate in capacitors, transformers and heating elements; as a functional filler and reinforcing additive in plastics, rubbers and cementitious mixes; as a pearlescent pigment and effect ingredient in cosmetics, paints, inks and decorative coatings; and as a friction/thermal-stable component in automotive and industrial friction products. Finely ground mica also improves rheology and suspension in formulations, and larger flakes find use in high-temperature gasketing and laminated sheet products.
Storage Condition
Store in dry, clean, and well-ventilated warehouses protected from rain, direct sunlight and contamination. Maintain relative humidity below 65% and ambient temperatures not exceeding 25°C to prevent moisture uptake and agglomeration. Keep material off the ground on pallets, sealed in moisture-resistant bags or drums, and away from acids or reactive chemicals.