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Niobophyllite

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WND806655

Niobophyllite

Rare Mineral

Description Tabs

Description
Locality: 
Mount Malosa, Zomba, Southern Region, Malawi
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 3.1 × 1.5 cm
Description

Tabular crystals of rare niobophyllite accompanied by aegirine and microcline. The niobophyllite is high lustrous and features a brown colour. The tabular crystals are slightly indistinct but this is typical for that locality. Actually you find rare minerals just in crumbs, but this crystals are easily visible by naked eye because the crystal aggregate measures more than 5 cm.

Mineral Data
What's on the rock

Niobophyllite

Formula: 
(K,Na)3(Fe,Mn)6(Nb,Ti)2Si8(O,OH,F)31
Strunz: 
9.DC.05
Hardness: 
3.0 - 4.0
Type Locality: 
Mann 2 (Ten Mile Lake), Seal Lake alkaline complex (Letitia Lake), Labrador, Newfoundland and Labrador, Canada
Wendel Minerals

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