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Plancheite & Brochantite

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SLN577519

Plancheite & Brochantite

Description Tabs

Description
Locality: 
Shangulowé Mine, Kambove, Lualaba, DR Congo
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
7.1 × 10.2 × 9.1 cm
Weight: 
603.00gr
Description

Nice specimen with a a lot of acicular light-blue plancheite crystals in balls and fan-shaped aggregates associated with a myriad of prismatic-tabular dark green brochantite crystals of excellent brightness. Crystals are present in different sides of the piece as shown by photos.

Mineral Data
What's on the rock

Plancheite

Formula: 
Cu8(Si8O22)(OH)4·H2O
Strunz: 
9.DB.35
Crystal System: 
Orthorhombic
Hardness: 
6.0
Type Locality: 
Sanda carriere (Sanda quarry; Sanda Mine), Mindouli, Mindouli District, Pool Department, Republic of Congo (Brazzaville)

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...

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