This collection includes twenty metallic minerals that are very useful in everyday life. These are bauxite, bornite, chalcopyrite, chalcocite, chromite, cobaltite , galena, goethite, hematite, ilmenite, limonite, magnetite, manganite, molybdenite, nickeline, pentlandite, pyrolusite, sphalerite, stibnite and wolframite.

Plastic box of 20 specimens of 3 to 5 cm : 30 cm x 32 cm