This specimen presents two different sides :
- One side shows a complete magnetite crystal, with perfect edges, and with centers of the faces which look like a "skeleton";
-the other side is shows this crystal is made of several smaller crystals (octahedrons).

The whole specimen is covered by a layer of hematite crystals. These ones are disposed in the same orientation, that gives to the specimen a satin luster.
In spite of the close color of the two minerals, this specimen remains very aesthetic, wiht a very interessant architecture.

location : Payun Yatru volcano- Province San Luis province - Argentina.
Size : 5,2 x 2 x 2,6 cm