Which material is known for its ability to attract ferrous objects?

Magnetite is a naturally occurring mineral and one of the most prominent types of iron ore. Its chemical composition includes iron oxide, which imparts magnetic properties, allowing it to attract ferrous objects. This characteristic is particularly useful in various applications, such as in magnetic separation processes in mining, where it can be used to separate iron from other materials.

In contrast, while cobalt and nickel are also metals that have magnetic properties, they are not as commonly associated with attracting ferrous materials like magnetite. Aluminum, on the other hand, is a non-ferrous metal and does not have the ability to attract ferrous objects due to its lack of magnetic properties. Therefore, magnetite stands out as the most recognizable material known for its strong attraction to ferrous objects.