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Ferro-gedrite

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SER745299

Ferro-gedrite

ex David Shannon collection

Description Tabs

Description
Locality: 
Spitzenberg Mines, Bad Harzburg, Goslar, Lower Saxony, Germany
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.1 × 1.9 × 0.8 cm
Description

dark green fibers in magnetite

Mineral Data
What's on the rock

Ferro-gedrite

Formula: 
☐{Fe2+2}{Fe2+3Al2}(Al2Si6O22)(OH)2
Strunz: 
9.DD.05
Hardness: 
5.5 - 6.0
Streak: 
White