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Pumpellyite-(Mg)

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CLB561006

Pumpellyite-(Mg)

Classic Locality

Description Tabs

Description
Locality: 
Paterson, Passaic County, New Jersey, United States of America
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.6 × 3 × 2 cm
Description

Green pumpellyite-(Mg) on matrix.

Mineral Data
What's on the rock

Pumpellyite-(Mg)

Formula: 
Ca2MgAl2(Si2O7)(SiO4)(OH)2·H2O
Strunz: 
9.BG.20
Crystal System: 
Monoclinic
Hardness: 
5.5
Streak: 
White
Type Locality: 
Keweenaw Co., Michigan, USA

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