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Schwertmannite

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CSL500921

Schwertmannite

Description Tabs

Description
Locality: 
Nagybörzsöny, Szob, Börzsöny Mountains, Pest County, Hungary
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.8 × 6.8 × 2.9 cm
Description

Fairly large piece with rusty brown coatings of rare iron-sulfate mineral on matrix.

Mineral Data
What's on the rock

Schwertmannite

Formula: 
Fe3+16(OH,SO4)12-13O16·10-12H2O
Strunz: 
7.DE.15
Crystal System: 
Tetragonal
Hardness: 
1.0 - 2.0
Streak: 
yellow
Type Locality: 
Pyhäsalmi Mine, Pyhäjärvi, Northern Finland Region, Finland

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