Goethite

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Taffs-Well quarry, Pentyrch, Cardiff, Wales
1916
Choice goethite miniature from Taffs-well quarry with a rippled, black surface formed from botryoidal hemispheres. The circular fibrous nature of the goethite is welll seen when viewed from the side.
Formula:Fe3+O(OH)
Status: Sold
Dimensions: 58x45x20mm
Size: Miniature (M)
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