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Macfallite Hausmannite & Quartz

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SCH99844

Macfallite Hausmannite & Quartz

Description Tabs

Description
Locality: 
BR 116 Road, Bacacheri, Curitiba, Paraná, Brazil
Size Range: 
Thumbnail (1-3cm)
Size: 
2.2 × 1.8 × 0.7 cm
Description

Fine fuzzy macfallite crystals, individuals and as balls, intergrown in clear quartz with octahedral hausmannite crystals. Very pretty!

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

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White
schani

Seller Information

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