Magnetite = Fe3O4 , important IRON – ore mineral.
Crystals grown – OKTAEDER and RHOMBEMDODEKAEDER – on parent rock. Surfaces, high gloss. Strongly MAGNETIC.
Place of discovery: Cerro Huanaquino – Potosi – BOLIVIA
Weight: 520 g Dimensions: 13 x 9 x 4 cm
Picture 3 is the back – all around paper flow is only the edge protection , was forgotten to remove in photos .