Biotite is a mineral in the group called mica.

The groupe mica includes minerals that include closely related materials having highly perfect basal cleavage.

Some of the mineral characteristics of Biotite

Color - Dark green, Brown, or Black

Streak - White

Transparency - transparent to translucent

Luster - Glossy, Pearly, or vitreous

Cleavage - Perfect in one direction

Fracture - Uneven when seen

Magnetism - None

Hardness - 2.5

Specific - 3.0

Crystal Shape - Monoclinic

Density - 2.8 - 3.4 the average is 3.09

Radioactivity - Barely detectable

Luminescence - Non-Flourescent

Electron Density - Bulk Density

Chemical Formula - K(Mg,Fe)3AiSl3010(OH)2

What is it used for?

Biotite is used for mainly displays un mineral collections and some people say it's a good heat


What is it made from?

It is made of Potassium, Magnesium, Aluminum, Iron, Silicon, Hydrogen, Oxygen and Flourine.

Where is it Mined?

It's mined through quarrying and underground mining, depending on how far it is underground. It is found in Ontario, Sicily, and Russia. It is found mainly in Igneous and Metamorphic rocks.

Made By:
Luke Jacoby
Max Reiter