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Pyrochlore Group

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SER109786

Pyrochlore Group

Description Tabs

Description
Locality: 
Água de Pau Volcano, São Miguel Island, Azores District, Portugal
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 2 × 1.4 cm
Description

some orange bipyramidal crystals on sanidine

Mineral Data
What's on the rock

Pyrochlore Group

Formula: 
A2Nb2(O,OH)6Z
Strunz: 
4
Crystal System: 
Isometric
Hardness: 
5 - 5.5
Colour: 
Brown, yellow-brown, reddish brown, orange, black
Streak: 
Light brown, yellow-brown