Different Types of Mica: Phlogopite and Muscovite

Are you planning to buy mica but are confused about how you should go about it? Well, this is a pretty common thing that most people go through, especially first-time buyers. However, this can easily be taken care of with the help of some basic knowledge of mica and its different types that are available out there. Well, not many people know but there are mainly two different types of mica—Phlogopite and Muscovite—available in the market. These two differ greatly in terms of their physical appearance and color, but what really sets them apart is the chemical composition of Muscovite and Phlogopite.

It is primarily the chemical composition of Muscovite and Phlogopite that is responsible for the differences in their appearance. The former is the most common member of the mica group and mainly contains potassium and aluminum, whereas the latter type is a hydrated silicate of potassium and magnesium. Due to these differences, Phlogopite mica varies in color from light silver to dark brown, and Muscovite is, usually, available in clear form or in color groups of ruby or green. Apart from the appearance, the composition is also responsible for the difference in other properties, which make them suitable for various industrial uses.

Muscovite Mica has greater dielectric strength than any other insulating material and thus, makes a perfect option for electrical and electronic devices. Apart from this, it is quite in demand for the manufacture of fireproofing and insulating materials, and also, to some extent, as a lubricant. Besides, you would be surprised to know that it surpasses all mica, including Phlogopite one, when it comes to thermal endurance, mechanical strength, the perfection of cleavage, resilience, and toughness. On the contrary, Phlogopite Mica is softer than Muscovite Mica, and this makes it more suitable for the manufacture of commutator Micanite, which is used in commutators of flush running designs. It is also used in plastic composite body parts for automobiles, but when compared to the industrial applications of Muscovite Mica, it has relatively lesser uses. The main reason behind this is the properties of Phlogopite Mica and its brown color, which makes it undesirable for certain uses.

So, clearly, the strong electrical properties and chemical resistance of Muscovite Mica, along with other properties and the colors it is available in, make it a better choice than Phlogopite Mica. But, this does not mean that you should invalidate the latter type as it is also used in certain domains, especially in the automobile industry. Depending on your requirements and the purpose you need mica for, you can easily choose between the two of them. However, while doing so, make sure you buy them from a reliable seller. Also, do not forget to look only for good quality material that is available out there.

About This Author

Axim Mica Engineering service in Robbinsville, New Jersey Joined: March 12th, 2019