Minerals - metal ores, 5 specimens sunk in the material

MACHINE TRANSLATION (not authorised yet)

Five natural specimens representing samples of natural materials are sunk into a transparent plastic block:

1 - CHALKOPIRITE /Copper source/

2 - MAGNETITE /Iron source/

3 - BOXIT / aluminium source/

4 - SZELIT /tungsten source/

5 - CASTERIDE / tin source/

Block wrapped in a bubble pocket and placed in a lockable cardboard box. Teaching aid dimensions: 14 x 6.5 x 1.8 cm.