Pyrite crystals
Pyrite is an iron sulphide FeS2, belonging to the cubic crystal class,
point group symmetry m3.
More pyrite
Kupfer is the German name for copper
Copper
Pyrite
Cobalt dolomite, from Congo in Africa
Quartz crystals
Quartz crystals
Quartz crystals
Gigantic quartz
Gold
Gold
III
Tourmaline (black, and Na, Fe, Al, Si, B, O, H compound), smokey quartz (translucent) and microcline (pottasium, aluminium silicate)
Petrified wood
Gold
Gold
Gold
Gold
Gold
