found 35 years ago have not been able to identify yet 50mm x50mm400gms hardness above 6 never lost its shine flat botom with strange indentations brittle and sparkles like adiamond in the sun contains 51% iron but dosent attract magnet
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Unidentified or unidentifiable means man-made industrial smelt slag. Iron-51.7, Titanium-30.9, Aluminum & Silicon-5.3 & 5.2, then Copper-2.35=Obviously man-made slag.[
i was told it by sientronics it was not slag why does it not attract a magnet yet contains 51% fe slag are magnetic and it has no air bubbles and is nearly a heavy as gold