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Prehnite

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WND518345

Prehnite

Description Tabs

Description
Locality: 
Prospect Park Quarry, Passaic County, New Jersey, United States of America
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
5.3 × 7.3 × 5.2 cm
Description

A very typical group of globular aggregates of greenish lustrous prehnite crystals with individual globules up to 2.2 cm across on matrix from a classic US American zeolite locality which produces no new material.

Mineral Data
What's on the rock

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
Wendel Minerals

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