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Dalyite & Aegirine

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SER764183

Dalyite & Aegirine

Description Tabs

Description
Locality: 
Água de Pau Volcano, São Miguel Island, Azores District, Portugal
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.1 × 2.5 × 2.5 cm
Description

some brown crystals with dark green aegirine

Mineral Data
What's on the rock

Dalyite

Formula: 
K2ZrSi6O15
Strunz: 
9.EA.25
Crystal System: 
Triclinic
Hardness: 
7.5
Type Locality: 
Green Mountain, Ascension Island, Saint Helena

Aegirine

Formula: 
NaFe3+Si2O6
Group Parent: 
Clinopyroxene Subgroup
Strunz: 
9.DA.25
Crystal System: 
Monoclinic
Hardness: 
6.0
Type Locality: 
Rundemyr, Øvre Eiker, Buskerud, Norway