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Ixiolite

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ESM568486

Ixiolite

Description Tabs

Description
Locality: 
Helen Beryl Mine, Fourmile, Custer County, South Dakota, United States of America
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
1.1 × 3.7 × 2.5 cm
Description

Grey metallic ixiolite in matrix

Mineral Data
What's on the rock

Ixiolite

Formula: 
(Ta,Nb,Sn,Fe,Mn)4O8
Strunz: 
4.DB.25
Crystal System: 
Orthorhombic
Hardness: 
6.0 - 6.5
Type Locality: 
Skogsböle (Skogböle), Kemiö Island (Kimito Island), Southwestern Finland Region, Finland