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Titanite & Ferrokentbrooksite

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SER1056446

Titanite & Ferrokentbrooksite

Description Tabs

Description
Locality: 
Água de Pau Volcano, São Miguel Island, Azores District, Portugal
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.2 × 2.6 × 1.1 cm
Description

a group of yellow, pointed titanite crystals with some brown ferrokentbrooksite crystals

Mineral Data
What's on the rock

Titanite

Formula: 
CaTi(SiO4)O
Strunz: 
9.AG.15
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Titanite occurrence, Hauzenberg, Lower Bavaria, Bavaria, Germany

Ferrokentbrooksite

Formula: 
Na15Ca6(Fe,Mn)3Zr3NbSi25O73(O,OH,H2O)3Cl2
Strunz: 
9.CO.10
Crystal System: 
Trigonal
Hardness: 
5.0 - 6.0
Streak: 
white
Type Locality: 
Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada