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Quartz Var Prasiolite

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GPM568304

Quartz Var Prasiolite

Description Tabs

Description
Locality: 
Sokolowiec, Jelenia Góra, Lower Silesia, Poland
Class: 
Massive/Crystalline
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.8 × 2.5 × 1.9 cm
Description

An interesting polished specimen of quartz var. prasolite. The outer prasiolite zone and white quartz internal zone. 

Prasiolite is an extremely rare transparent green variety of quartz. Its colour comes from changes in the crystallographic structure, not from inclusions like most of the green quartz.   

The colour is idiochromatic in nature, resulting from the presence of Fe2+ ions substituting for Si in the crystal structure.

v_147

Mineral Data
What's on the rock

Quartz

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

Prasiolite

Variety Of: 

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Hardness: 
7.0
Hardness: 
0.0
Colour: 
green
Not Sold

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