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Scolecite Quartz & Prehnite

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SER616150

Scolecite Quartz & Prehnite

Description Tabs

Description
Locality: 
Formazza Valley, Verbano-Cusio-Ossola Province, Piedmont, Italy
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2.7 × 2.5 × 2.1 cm
Description

A cluster of albite hosts a tuft of scolecite, a quartz crystal and some muscovite covered by prehnite

Mineral Data
What's on the rock

Scolecite

Formula: 
CaAl2Si3O10·3H2O
Strunz: 
9.GA.05
Hardness: 
5.0 - 5.5
Streak: 
white

Quartz

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

Prehnite

Formula: 
Ca2Al2Si3O10(OH)2
Strunz: 
9.DP.20
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Karoo dolerites, Cradock, Chris Hani District, Eastern Cape Province, South Africa