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Quartz Plancheite & Calcite

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PDM728251

Quartz Plancheite & Calcite

Description Tabs

Description
Locality: 
Kambove, Haut-Katanga, DR Congo
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 3 × 1.5 cm
Description

, Haut-Katanga, DR Congo Ex. EToussaint #36 50x30x15

This is a very interesting specimen of spheroidal plancheite inclusions in transparent quartz and minor in hexagonal transparent calcite. It is a crust with the rear richly covered by sharp pink calcite rhombohedra and light green “katanguite”, a miss of chrysocolla and plancheite. No damages!.

Specimen #36 from the collection of Eudore Toussaint, a Belgian Chemical Engineer in the D.R.Congo from 1948 to 1971.

It comes with the original old wood socle from the collection.

Mineral Data
What's on the rock

Quartz

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

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)

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

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