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Prehnite & Quartz

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MGR780841

Prehnite & Quartz

Description Tabs

Description
Locality: 
Goboboseb Mountains, Brandberg, Dâures, Erongo Region, Namibia
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.9 × 5.5 × 3 cm
Description

A wonderful, very aesthetic combination of a star-formed assemble of quartz with light green, lustrous prehnite. The quartz crystals of first generation formed this eye-catching assemble - they are all sharp and lustrous. Tiny quartz crystals of second generation cover most of the front-side, tehy are on same high luster. The prhnite spheres are scattered all over. No significant damages to report, bottom was on the rock.

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

Quartz

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