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Calcite & Manganophyllite

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MEX163730

Calcite & Manganophyllite

Fluorescent

Description Tabs

Description
Locality: 
Långban, Filipstad, Värmland County, Sweden
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.4 × 4.4 × 2.5 cm
Description

Bright red fluoresce calcite from langban. It's called glowing coal, too. Manganophyllite is a variety of biotite.

Mineral Data
What's on the rock

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

Manganophyllite

Variety Of: 

Biotite

Formula: 
K(Mn,Mg,Al)2-3(Al,Si)4O10(OH)2
Crystal System: 
Hexagonal
Hardness: 
0.0