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Brochantite With Quartz

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QRI840729

Brochantite With Quartz

Former collection Kasper (CH)
Classic Locality

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.6 × 6.8 × 4.8 cm
Weight: 
341.00gr
Description

Impressively rich specimen comprised of myriads of deep green brochantite tuffs on gossan matrix. The specimen has an excellent coverage and a nice velvet effect. Only minor peripheral contacts here and there. 
The specimen comes from the former collection Kasper (CH) and dates back to the 70s.

Mineral Data
What's on the rock

Brochantite

Formula: 
Cu4(SO4)(OH)6
Strunz: 
7.BB.25
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0
Type Locality: 
Mednorudyanskoye Cu Deposit, Nizhnii Tagil, Sverdlovskaya Oblast', Middle Urals, Urals Region, Russia...

Quartz

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

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