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Calamine With Hemimorphite

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LGM734529

Calamine With Hemimorphite

Ex Dr. Krantz, Bonn, Germany
With Antique Label

Description Tabs

Description
Locality: 
Altenberg, Aachen, Cologne, North Rhine - Westphalia, Germany
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4 × 6 × 4 cm
Weight: 
85.00gr
Description

Lustrous crystals of hemimorphite ("Kiesel Zink") on the typical grey calamine matrix. A nice miniature specimen from the Altenberg zinc mine in Neutral-Moresnet. Neutral Moresnet was a small Belgian-Prussian condominium that existed from 1816 to 1920 between present-day Belgium and Germany. The mine was owned by Vieille-Montagne, closed in 1884 and is part of the classic Altenberg / Kelmis / Moresnet mining area near Aachen, Germany.

From old Dr. Krantz stock, comes with an odd cardboard label, the mineral name and locality are on-glued cutted single words, probably from an older printed label. This type of label was quite rare.

Mineral Data
What's on the rock

Calamine

Synonym Of: 

Hemimorphite

Formula: 
Zn4Si2O7(OH)2·H2O
Strunz: 
9.BD.10
Hardness: 
4.5 - 5.0

Hydrozincite

Formula: 
Zn5(CO3)2(OH)6
Strunz: 
5.BA.15
Hardness: 
2.0 - 2.5

Smithsonite

Formula: 
ZnCO3
Strunz: 
5.AB.05
Hardness: 
4.0 - 4.5

Hemimorphite

Formula: 
Zn4Si2O7(OH)2·H2O
Strunz: 
9.BD.10
Hardness: 
4.5 - 5.0
Streak: 
White
Type Locality: 
Băiţa Mining District (Baita Bihor; Rézbánya), Nucet, Bihor Co., Romania

Seller Information

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