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Phlogopite

#57599

Phlogopite

#57599
Availability
Sold
Size
13 x 10 x 0.5 cm - Cabinet 
Formula
KMg3(Si3Al)O10(OH)2 (RRUFF)
Locality
Palabora mine, Phalaborwa, Limpopo, South Africa

Golden to golden brown micaceous Phlogopite. 

Phlogopite is the Manganese end member of Biotite-Phlogopite series. It is a Phyllosilicate - Monoclinic - Mica group member. Phlogopite is classified as an ordinary (True or Common) Mica - Trioctahderal with Mg at the (M) positions, K as (I), and OH as (A). Mg end member of Biotite-Phlogopite series.

Phlogopite

Formula
KMg3(Si3Al)O10(OH)2 
Crystal System
Monoclinic 
Crystal Habit
Micaceous, Scaly, Lamellar 
Cleavage
Perfect, None, None 
Luster
Vitreous - Pearly 
Color
brown, gray, green, yellow, reddish brown 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Uneven 
Hardness
2-2.5 

Data courtesy of Webmineral.

Collection
Chris van Laer Collection

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