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Fluornatropyrochlore Britholite-(Y) & Zircon

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SER937747

Fluornatropyrochlore Britholite-(Y) & 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: 
3.5 × 3.2 × 3.1 cm
Description

several orange pyrochlore crystals on sanidine with two pink britholite-Y crystals and some zircons

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

Britholite-(Y)

Formula: 
Ca2(Y,Ca)3(SiO4,PO4)3(OH,F)
Strunz: 
9.AH.25
Crystal System: 
Hexagonal
Hardness: 
5.0
Type Locality: 
Abukuma range (Abukuma massif), Fukushima prefecture, Tohoku region, Honshu Island, Japan

Zircon

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