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Defernite & Hausmannite

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TPX1132011

Description Tabs

Description
Locality: 
Kombat Mine, Grootfontein, Otjozondjupa Region, Namibia
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 2.9 × 2.7 cm
Weight: 
76.00gr
Description

Very interesting defernite crystals on Hausmannite matrix from this famous mine

 

Mineral Data
What's on the rock

Defernite

Formula: 
Ca6(CO3)2-x(SiO4)x(OH)7(Cl,OH)1-2x (x<0.5)
Strunz: 
5.BA.25
Crystal System: 
Orthorhombic
Hardness: 
3.0
Type Locality: 
Güneyce-Ikizdere, Rize Province, Black Sea Region, Turkey

Hausmannite

Formula: 
Mn2+Mn3+2O4
Strunz: 
4.BB.10
Hardness: 
5.5
Type Locality: 
Oehrenstock (Öhrenstock), Langewiesen, Ilmenau District, Thuringian Forest, Thuringia, Germany

Current price

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15
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Start 18 Feb 18:00
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Spain
5
Europe
18.60
America
18.85
Asia & Oceania
20.50
Africa
17.20

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