1
An ore for copper
2
The search of mineral ores
3
The mineral ore for zinc
4
The name of the familiy of kaolinite, feldspar and talc
5
Minerals which contain metals
6
The scale used to measure the hardness of a solid
7
One of the ores for iron
8
The metal obtained from bauxite
9
The resistance of a solid to be scratched
10
A geometrical soilid with faces, straight edges and vertices
11
The aspect of a solid when it reflects light
12
The physical state of the majority of minerals
13
The metal obtained from galena
