Biotite

K(Mg,Fe)3(AlSi3O10)(OH)2

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Biotite is a common phyllosilicate mineral found in igneous and metamorphic rocks. It is distinguished from muscovite by its darker color due to iron and magnesium content. Biotite is an important indicator of metamorphic grade.

Kristal Sistemi Monoclinic
Mineral Sınıfı 09 Silicates
Mohs Sertliği 2.5-3.0
Özgül Ağırlık 2.70-3.40
Renk Black, dark brown, dark green
Parlaklık Vitreous
Çizgi Rengi White to gray
Dilimlenme Perfect basal {001}
Kırılma Uneven
Şeffaflık Translucent
Kristal Alışkanlığı Tabular, pseudo-hexagonal

Mohs Sertliği

Mohs Hardness: 2,5 – 3,0
1 Soft10 Hard

Kristal Sistemi

Monoclinic

Frequently Asked Questions

What is the hardness of Biotite?
Biotite has a Mohs hardness of 2.5-3.0.
What crystal system does Biotite belong to?
Biotite crystallizes in the Monoclinic crystal system.
What color is Biotite?
Biotite is typically Black, dark brown, dark green.
What type of luster does Biotite have?
Biotite exhibits a Vitreous luster.
What is the chemical formula of Biotite?
The chemical formula of Biotite is K(Mg,Fe)3(AlSi3O10)(OH)2.