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Fluornatropyrochlore & Astrophyllite

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SHS1165588

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Description
Locality: 
Lombadas, Ribeira Grande, São Miguel Island, Azores District, Portugal
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.5 × 1.1 cm
Description

Nice fluornatropyrochlore and astrophyllite in matrix

Mineral Data
What's on the rock

Fluornatropyrochlore

Formula: 
(Na,REE,Ca)2Nb2(O,OH)6F
Hardness: 
0.0
Type Locality: 
Maoniuping Mine, Mianning Co., Liangshan Autonomous Prefecture, Sichuan Province, China

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

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Start 08 Feb 18:00
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