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Glaucophane Rutile Fuchsite & Pyrite

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PDM666180

Glaucophane Rutile Fuchsite & Pyrite

Description Tabs

Description
Locality: 
Chiavolino, Pollone, Biella Province, Piedmont, Italy
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.7 × 4 × 3.5 cm
Description

Aggregate of short prismatic glaucophane crystals with intense lustre and deep blue-black colour, with red rutile and green laminar fuchsite crystals. Interestingly, there are some cubic pyrite crystals also, where the main reach 10 mm in size.

Ex. Chris Deroo.

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

Rutile

Formula: 
TiO2
Strunz: 
4.DB.05
Crystal System: 
Tetragonal - Ditetragonal Dipyramidal
Hardness: 
6.0 - 6.5
Type Locality: 
Rutile locality, Horcajuelo de la Sierra, Madrid, Spain

Fuchsite

Variety Of: 

Muscovite

Formula: 
KAl2(AlSi3O10)(OH)2
Strunz: 
9.EC.15
Hardness: 
2.5
Formula: 
K(Al,Cr)3Si3O10(OH)2
Hardness: 
0.0

Pyrite

Formula: 
FeS2
Strunz: 
2.EB.05a
Crystal System: 
Isometric
Hardness: 
6.0 - 6.5

Seller Information

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