Crystals! Photos
Fluorite, CaF2
Chrome Alum, KCr0.25Al0.75(SO4)2
Rochelle salt, NaK(C4H4O6)•4H2O
Nickel(II) sulfate, NiSO4•6H2O
Copper(II) sulfate, CuSO4•5H2O
Epsom salt, MgSO4•7H2O
Quartz, SiO2
Pyrite, FeS2