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Glaucophane

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SMM925762

Glaucophane

Description Tabs

Description
Locality: 
Rio Oremo, Chiavolino, Pollone, Biella Province, Piedmont, Italy
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 2 × 1 cm
Description

A specimen made of a dense interweaving of very dark indigo blue crystals of glaucophane. Nice.

Boxed with Label
Mineral Data
What's on the rock

Glaucophane

Formula: 
◻[Na2][Mg3Al2]Si8O22(OH)2
Strunz: 
9.DE.25
Hardness: 
5.0 - 6.0
Type Locality: 
Syros Island (Syra), Cyclade Islands (Cyclades; Kikladhes; Nomos Kikladhon), Kykládes Prefecture, Aegean Islands Department (Aiyaíon), Greece

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