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Quartz Var Chalcedony

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TBM806080

Quartz Var Chalcedony

Description Tabs

Description
Locality: 
Nulvi, Anglona, Sassari Province, Sardinia, Italy
Class: 
Massive/Crystalline
Size Range: 
Cabinet (10-18 cm)
Size: 
10.5 × 5.5 × 5.5 cm
Weight: 
272.00gr
Description

Polychrome mass of Chalcedony from the volcanic area north of the Saredegna. In the sample goes from white zonations to yellow orange zonations.

Mineral Data
What's on the rock

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

Chalcedony

Variety Of: 

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Hardness: 
7.0
Hardness: 
6.5 - 7.0
Streak: 
White
Type Locality: 
Kadıköy (Chalcedon), Istanbul Province, Marmara Region, Turkey
Not Sold

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