|Carbonates and Nitrates|
Massive brown Siderite with flashes typical of the mineral.
Siderite is one of the main iron minerals known since prehistoric times. It is a mineral of economic importance for the extraction of iron since it contains almost 60% iron in a pure state. It is also found in space and on satellites like the Moon or in meteorites.
The mineral includes a label with the name and origin and is attached to a cardboard box. 4 cm square.
*The price is per unit (a single cardboard box of the four shown in the photo)
Since the minerals are natural, you will receive a piece similar to the one in the photograph. The minerals come in cardboard boxes and are glued to a porex base with hot silicone; these can be removed using ethyl alcohol without damaging the mineral. The size is approximate.