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Pumpellyite-(Mg)

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JYJ636076

Pumpellyite-(Mg)

Description Tabs

Description
Locality: 
Obří důl, Krkonoše Mountains, Hradec Králové Region, Czech Republic
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 4 × 2 cm
Description

Aesthetic quartz with quite intense green pumpellyite-Mg and albite. 

Beautiful specimen!

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