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Okanoganite-(Y) & Astrophyllite

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PAV956868

Okanoganite-(Y) & Astrophyllite

Classic Locality

Description Tabs

Description
Locality: 
Água de Pau Volcano, São Miguel Island, Azores District, Portugal
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2.8 × 2.2 × 2.4 cm
Description

Group of pale pink okanoganite-(Y) crystals associated to orange astrophyllite.

Very rare mineral!

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

Okanoganite-(Y)

Formula: 
(Na,Ca)3(Y,Ce)12Si6B2O27F14
Strunz: 
9.AJ.35
Hardness: 
0.0
Type Locality: 
Washington Pass, Golden Horn Batholith, Okanogan Co., Washington, USA

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