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Fogoite-(Y) & Astrophyllite

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PAV927848

Fogoite-(Y) & Astrophyllite

Type Locality

Description Tabs

Description
Locality: 
Lombadas, Ribeira Grande, São Miguel Island, Azores District, Portugal
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2.9 × 2 × 1.8 cm
Description

Group of fogoite-(Y) crystals from the type-locality.

Also in the sample some orange astrophyllite and fluornatropyrochlore.

Collected: 
2015
Boxed with Label
Mineral Data
What's on the rock

Astrophyllite

Formula: 
(K,Na)3(Fe,Mn)7Ti2Si8O24(O,OH)7
Strunz: 
9.DC.05
Crystal System: 
Triclinic
Hardness: 
3.0
Streak: 
Golden
Type Locality: 
Låven (Skådön; Lamö; Lamanskjaer), Langesundsfjorden, Larvik, Vestfold, Norway