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Astrophyllite Ilmenite & Zircon

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SER1137589

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Description
Locality: 
Água de Pau Volcano, São Miguel Island, Azores District, Portugal
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 5.6 × 5.6 cm
Description

some vugs filled with white sanidine and dark green aegirine host several red orange astrophyllite crystals , metallic ilmenite and light yellow zircons; self collected on 2013

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

Ilmenite

Formula: 
Fe2+TiO3
Strunz: 
4.CB.05
Crystal System: 
Trigonal - Rhombohedral
Hardness: 
5.0 - 6.0
Type Locality: 
Ilmen Natural Reserve, Ilmen Mts, Chelyabinsk Oblast', Southern Urals, Urals Region, Russia...

Zircon

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

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