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Zircon & Sillimanite

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Watches:
TBM1066464

Description Tabs

Description
Locality: 
Grande Valley, Verbano-Cusio-Ossola Province, Piedmont, Italy
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
2 × 4 × 3 cm
Largest Crystal: 
0.30cm
Weight: 
16.00gr
Description

Nice dark red Zircon crystal up to 3 mm  with light grey Sillimanite crystal up to 17 mm in pegmatite matrix

Mineral Data
What's on the rock

Zircon

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

Sillimanite

Formula: 
Al2(SiO4)O
Strunz: 
9.AF.05
Crystal System: 
Orthorhombic
Hardness: 
6.5 - 7.5
Streak: 
white
Type Locality: 
Chester, Middlesex Co., Connecticut, USA