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.

Sistem Kristal Monoclinic
Kelas Mineral 09 Silicates
Kekerasan Mohs 2.5-3.0
Berat Jenis 2.70-3.40
Warna Black, dark brown, dark green
Kilap Vitreous
Gores White to gray
Belahan Perfect basal {001}
Pecahan Uneven
Transparansi Translucent
Bentuk Kristal Tabular, pseudo-hexagonal

Kekerasan Mohs

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

Sistem Kristal

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.