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Pumpellyite-(Mg) & Prehnite & Quartz

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SHS560735

Pumpellyite-(Mg) & Prehnite & Quartz

Description Tabs

Description
Locality: 
Erongo Mountains, Karibib, Erongo Region, Namibia
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2 × 2.5 cm
Description

Nice pumpeyllite mg with prehnite and quartz 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

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

Quartz

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