Crystals & Minerals

Luster: metallic or nonmettalic
Color: it was color other than.
Streak: the mineral on than what or cleoar
Hardness: glass plate=5.5
Cleavage: would break in a line
Fracture: would break unevenly
Composition: mineral composition pyrite FeS2
Other properties: of common minerals to determine each mineral

Galena - Mineral
Luster - metallic
Color - silver
Cleavage

Topaz - Mineral
Luster - non-metallic
Color - brown
Cleavage
clear