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Hiortdahlite

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CHP964473

Hiortdahlite

Description Tabs

Description
Locality: 
San Vito Quarry, Ercolano, Monte Somma, Somma-Vesuvius, Naples, Campania, Italy
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.2 × 2 × 1.7 cm
Description

specimen with a beautiful group of yellow prismatic crystals of hiortdahlite on matrix.

c. 2521

Mineral Data
What's on the rock

Hiortdahlite

Formula: 
(Ca,Na)3(Zr,Ti)(Si2O7)(O,OH,F)2
Strunz: 
9.BE.17
Crystal System: 
Triclinic
Hardness: 
5 - 5½
Colour: 
Yellow, yellowish-brown

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