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Kellyite & Alleghanyite

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SHS181285

Kellyite & Alleghanyite

Type Locality

Description Tabs

Description
Locality: 
Bald Knob, Sparta, Alleghany County, North Carolina, United States of America
Size Range: 
Micromount (under 1cm)
Size: 
0.8 × 0.5 × 0.5 cm
Description

Kellyite and alleghanyite in matrix

Mineral Data
What's on the rock

Kellyite

Formula: 
Mn2+2Al(AlSiO5)(OH)4
Strunz: 
9.ED.15
Hardness: 
2.5
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