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Macfallite & Hausmannite

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SCH73096

Macfallite & Hausmannite

Description Tabs

Description
Locality: 
BR 116 Road, Bacacheri, Curitiba, Paraná, Brazil
Size Range: 
Thumbnail (1-3cm)
Size: 
1.6 × 0.5 × 2.3 cm
Description

Acicular groups of macfallite crystals, intergrown in a clear quartz with octahedral hausmannite.

Mineral Data
What's on the rock

Macfallite

Formula: 
Ca2(Mn3+,Al)3(Si2O7)(SiO4)(OH)3
Strunz: 
9.BG.15
Crystal System: 
Monoclinic
Hardness: 
5.0
Type Locality: 
Manganese Mine, Copper Harbor, Keweenaw Co., Michigan, USA

Hausmannite

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

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