What is Mica?

Mica, known to some as the invaluable mineral, is made up of aluminum silicate and alkalis with hydroxyl. Some forms of mica also contain lithium, iron, magnesium, and very rarely does mica contain manganese, vanadium, barium, and fluorine. Mica has many different names including: Cat-Gold, Glist, Rhomboidal Mica, Cat-Silver, Katzengold, and Glimmer. However, Mica is more commonly known as Muscovite. Mica has basal (one-directional), perfect cleavage and splits into thin paper-like layers when broken in the direction of its cleavage. While Mica is very brittle, it has useful thermal, chemical, and physical properties.

What are the different types of Mica?

Although there are MANY types of Mica, over twenty in fact, the two main types of mica that are used are Muscovite Mica and Phlogopite Mica. There are also Lepidolite Micas, Paragonite Micas, Zinnwaldite Micas, and Biotite Micas. Lepidolite Micas contain large amounts of lithium, Paragonite contains large amounts of sodium, Biotite with its large supply of magnesium and iron, and Zinnwaldite contains fair amounts of iron and lithium.

Muscovite Mica

Dry Ground Muscovite Mica

Wet Ground Muscovite Mica

Biotite

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