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Astrophyllite & Zircon

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SER813200

Astrophyllite & Zircon

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: 
3.8 × 3.1 × 2.5 cm
Description

some clusters of red orange astrophyllite on sanidine with dozens yellow zircon crystals

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

Zircon

Formula: 
ZrSiO4
Strunz: 
9.AD.30
Crystal System: 
Tetragonal
Hardness: 
7.5
Streak: 
White