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Alluaudite & Muscovite & Schorl

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SHS597898

Alluaudite & Muscovite & Schorl

ex Collection Edgar Franz (ex. Tapani Mutanen)

Description Tabs

Description
Locality: 
Kaatiala Pegmatite, Kuortane, South Ostrobothnia, Finland
Class: 
Massive/Crystalline
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 5.3 × 6 cm
Description

Alluaudite with schorl and muscovite in matrix

Mineral Data
What's on the rock

Alluaudite

Formula: 
(Na,Ca)Mn2+(Fe3+,Mn2+,Fe2+,Mg)2(PO4)3
Strunz: 
8.AC.10
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0
Type Locality: 
Varuträsk, Skellefteå, Västerbotten, Sweden

Muscovite

Formula: 
KAl2(AlSi3O10)(OH)2
Strunz: 
9.EC.15
Hardness: 
2.5
Streak: 
White

Schorl

Formula: 
Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Strunz: 
9.CK.05
Hardness: 
7.0