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Schulenbergite & Langite

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RSG1164772

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Description
Locality: 
Ochsenhütte Slag Locality, Grane Reservoir, Goslar, Harz, Lower Saxony, Germany
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.3 × 2 × 1.8 cm
Description

Excellent micromount featuring a well-formed rosette of schulenbergite, composed of finely intergrown lamellar to acicular crystals, creating an elegant radial habit. The schulenbergite displays a turquoise to bluish-green coloration, evenly distributed, with a silky to slightly vitreous luster.

The specimen is enhanced by the presence of small dark blue langite crystals, providing a strong color contrast and increasing the mineralogical interest of the piece. The crystallization is sharp and well defined

In a box 2.8x2.8cm, labelled

FoV : 3.00mm

Ex Van den Berg 1991

Mineral Data
What's on the rock

Schulenbergite

Formula: 
(Cu,Zn)7(SO4,CO3)2(OH)10·3H2O
Strunz: 
7.DD.80
Crystal System: 
Trigonal
Hardness: 
2.0
Type Locality: 
Glücksrad Mine, Oberschulenberg, Bockswies veins, Clausthal-Zellerfeld, Harz, Lower Saxony, Germany

Langite

Formula: 
Cu4(SO4)(OH)6·2H2O
Strunz: 
7.DD.10
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.0
Type Locality: 
Fowey Consols (incl. Wheal Treasure; Wheal Fortune; Wheal Chance), Tywardreath, St Austell District, Cornwall, England, UK

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Start 04 Feb 18:00
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Shipping Information

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FRANCE
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EUROPE
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MONDE / WORLD
10

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