How do I identify Phlogopite?

Phlogopite can be identified by its hardness of 2 - 3 on the Mohs scale, Brown color, Pearly, Vitreous luster, Monoclinic crystal system. Look for these key characteristics when examining specimens.

What color is Phlogopite?

Phlogopite typically appears in Brown, gray, green, yellow, reddish brown. Color can vary depending on impurities and formation conditions.

How hard is Phlogopite?

Phlogopite has a hardness of 2 - 3 on the Mohs scale. This makes it a soft mineral that can be scratched easily.

Phlogopite

A variety of Biotite

Rare

Phlogopite specimen - rock identification

What is Phlogopite?

Phlogopite is incredibly brittle, yet it develops in impressively large mica sheets. These large sheets are so fragile that when they come into contact with anything, including water, they will crumble. This delicate nature makes it is a perfect mineral for use as insulation in electronic devices. Although you may not know it, your car's spark plugs very likely contain phlogopite!

Uses & Applications

Phlogopite is one of two mica materials used industrially. Although it is used less commonly than muscovite due to its comparative rarity, it still has a variety of applications. Phlogopite is added to plastic car parts to increase stiffness. It is also used to insulate different electrical products, make spark plugs, and as a substitute for asbestos.

Healing Properties

Phlogopite works on the Third Eye and Crown chakras to provide clarity of vision and encourage innovative ideas. It allows its user to cut through insignificant details and provides a clearer picture of every issue, so it can be quite beneficial in the office. It enhances visions of the Third Eye chakra and brings better understanding between the physical and spiritual worlds.

Phlogopite Market Value Calculator

Estimate the market value of Phlogopite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.

Phlogopite Localities Map

See where Phlogopite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

Map preview

North ZoneCentral RidgeSouth Basin

Key Characteristics

Formation of Phlogopite

Phlogopite is an important and relatively common end-member composition of biotite. Phlogopite micas are found primarily in igneous rocks, although it is also common in contact metamorphic aureoles of intrusive igneous rocks with magnesian country rocks and in marble formed from impure dolomite (dolomite with some siliclastic sediment).