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Laumontite On Prehnite

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SHS65936

Laumontite On Prehnite

Description Tabs

Description
Locality: 
Upper New Street Quarry, Paterson, Passaic County, New Jersey, United States of America
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.4 × 3.6 × 1.5 cm
Description

Laumontite crystals on prehnite matrix

Mineral Data
What's on the rock

Laumontite

Formula: 
CaAl2Si4O12·4H2O
Strunz: 
9.GB.10
Hardness: 
3.5 - 4.0
Streak: 
White
Type Locality: 
Huelgoat (Locmaria-Berrien), Finistère, Brittany, France

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