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Strüverite

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SKY812101

Strüverite

Description Tabs

Description
Locality: 
Etta Mine, Keystone, Pennington County, South Dakota, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 1 × 0.8 cm
Description

Black crystals of struverite, a variety of rutil, from South Dakota,USA

Ex Vandenbroucke Museum collection specimen, from Waregem, Belgium.

Mineral Data
What's on the rock

Strüverite

Variety Of: 

Rutile

Formula: 
TiO2
Strunz: 
4.DB.05
Hardness: 
6.0 - 6.5
Formula: 
(Ti,Ta,Fe)O2
Hardness: 
6.0 - 6.5

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