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3D3DLarge meteorite slice.
This is a 1/4" thick slice from the Campo del Cielo Iron Meteorite from Chaco, Gran Chaco Gualamba Argentina. Like the full chunk above from Mexico, it is a course iron octahedrite, so there's a good chance that the inside of the one from Mexico looks similar to this one. The surface has been etched with acid (a common technique) to make the crystal zones visible.
Source: eBay seller lee1414
Contributor: Theodore Gray
Acquired: 10 October, 2005
Price: $39
Size: 4"
Purity: >90%