Here's a large 10.4 grams Hoba meteorite shale.

The Hoba meteorite stood in the ground for 80,000 years. When it was discovered in 1920, the meteorite was covered with shale as says L. J. Spencer in 1929 : "Here the mass is surrounded by a thick layer of scale, which has obviously been formed by the weathering of the iron. This ‘iron shale’ is well exposed in the sides of the pit that has been partly dug round the mass. It has a thickness of one foot and shows a lamination parallel to the adjacent surface of the unal tered iron from which it is sharply separated. The scale is dark-brown to black with a dark-brown streak and is slightly magnetic. It shows green nickel stains and is seamed with cal cium carbonate from the surrounding surface limestone (Kalahari Kalk) in which the mass is embedded."

Sold with label/certificate in a box.