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Galaxite & Alleghanyite & Kutnohorite

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SHS176236

Galaxite & Alleghanyite & Kutnohorite

Type Locality

Description Tabs

Description
Locality: 
Bald Knob, Sparta, Alleghany County, North Carolina, United States of America
Size Range: 
Thumbnail (1-3cm)
Size: 
1 × 1.3 × 0.9 cm
Description

Galaxiteand alleghanite with kutnohorite on matrix

Mineral Data
What's on the rock

Galaxite

Formula: 
(Mn,Fe,Mg)(Al,Fe)2O4
Strunz: 
4.BB.05
Hardness: 
7.5
Type Locality: 
Bald Knob deposit (Primary ore body; Crouse Knob deposit), Bald Knob, Sparta, Alleghany Co., North Carolina, USA

Alleghanyite

Formula: 
Mn2+5(SiO4)2(OH)2
Strunz: 
9.AF.45
Crystal System: 
Monoclinic
Hardness: 
5.5
Type Locality: 
Bald Knob, Sparta, Alleghany County, North Carolina, United States of America

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