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Braunite & Kutnohorite

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HCH81790

Braunite & Kutnohorite

Description Tabs

Description
Locality: 
Sailauf, Lower Franconia, Bavaria, Germany
Size Range: 
Cabinet (10-18 cm)
Size: 
5 × 10.5 × 6 cm
Largest Crystal: 
0.10cm
Description

Rich covered specimen with small black octahedral braunite up to 0.5 mm large in parageneses of very vague light pinkish crystals of kutnohorite up to 1 mm large on with Mn-ore covered matrix.

Mineral Data
What's on the rock

Braunite

Formula: 
Mn2+Mn3+6(SiO4)O8
Strunz: 
9.AG.05
Hardness: 
6.0 - 6.5
Streak: 
Black
Type Locality: 
Oehrenstock (Öhrenstock), Langewiesen, Ilmenau District, Thuringian Forest, Thuringia, Germany

Kutnohorite

Formula: 
Ca(Mn,Mg,Fe)(CO3)2
Strunz: 
5.AB.10
Hardness: 
3.5 - 4.0
Type Locality: 
Poličany, Kutná Hora (Kuttenberg), Central Bohemia Region, Bohemia (Böhmen; Boehmen), Czech Republic

Seller Information

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