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Emerald & Biotite

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CLB508760

Emerald & Biotite

Classic Locality

Description Tabs

Description
Locality: 
Pizzo Marcio, Trontano, Verbano-Cusio-Ossola Province, Piedmont, Italy
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 4 × 2.5 cm
Largest Crystal: 
0.65cm
Description

Until recently it had escaped me that emeralds were found in Italy. This is a very nice specimen with  lots of crystals, the largest (0.65 cm) and well terminated.

Mineral Data
What's on the rock

Emerald

Variety Of: 

Beryl

Formula: 
Be3Al2(Si6O18)
Strunz: 
9.CJ.05
Hardness: 
7.5 - 8.0
Formula: 
Be3(Al,Cr)2Si6O18
Crystal System: 
Hexagonal
Hardness: 
0.0

Biotite

Group Parent: 
Mica Group

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