High Quality Content by WIKIPEDIA articles! The Bushveld Igneous Complex (or BIC) is a large layered igneous intrusion within the Earth`s crust which has been tilted and eroded and now outcrops around what appears to be the edge of a great geological basin, the Transvaal Basin. Located in South Africa, the BIC contains some of the richest ore deposits on Earth. The reserves of platinum group metals (PGMs), platinum, palladium, osmium, iridium, rhodium, and ruthenium are the world`s largest, and there are vast quantities of iron, tin, chromium, titanium and vanadium. Gabbro or norite is also quarried from parts of the Complex and rendered into dimension stone. The site was discovered around 1897 by Gustaaf Molengraaff.