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0 item @ $0.00  

Biotite series with Magnetite

#PD34678

Biotite series with Magnetite

#PD34678
Availability
Sold
Size
5 x 4 x 3.5 cm - Miniature 
Formula
Unavailable
Locality
Faraday mine, Hastings Co., Ontario, Canada

Phyllosilicate - Monoclinic - Mica group member. Ordinary (True or Common) Mica - Trioctahderal. For more information on Mica minerals and other phyllosilicates please reference our article - Click Here.

An interesting specimen with octahedral Magnetite. Magnetite is usually fromed from the breakdown of Biotite.

Biotite

Formula
K(Mg,Fe++)3[AlSi3O10(OH,F)2 
Crystal System
Monoclinic 
Crystal Habit
Micaceous, Lamellar, Pseudo Hexagonal 
Cleavage
Perfect, None, None 
Luster
Vitreous - Pearly 
Color
dark brown, greenish brown, blackish brown, yellow, white 
Streak
gray 
Class
Monoclinic - Prismatic 
Fracture
Uneven 
Hardness
2.5-3 

Data courtesy of Webmineral.

Collection
Phillips Collection
Mineralpedia
View Biotite
On Dakota Matrix
Previously Sold Biotite
On Dakota Matrix
Other Available Biotite
WebMineral
View Biotite
Mindat
View Biotite

Other Sold

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