Crystal Gallery
CaCO3 (big crystals) with Dolomite CaMg(CO3)2 and Chalcopyrite CuFeS2 (yellow),
Sweetwater Mine,
Reynolds County, Missouri USA
Calcareous Spar (Calcite) showing birefringence.
Pyrite or iron pyrite FeS2.
Celestine SrSO4, Madagascar
Grossular (garnet) -
Ca3Al2Si3O12,
near Lake Jaco, Chihuahua, Mexico
Copper Sulfate - CuSO4 -
One of the first crystals to be
examined by x-ray diffraction.
Quartz - A crystal that comes in
left and right-handed forms.
Magnetite - Fe2O4
Serro, Minas Gerais,
Brazil.
Beryl - Be3Al2Si6O18
Hexagonal Crystal
Colorado USA
Stibnite - Sb2S3
Used as an eyeliner by Cleopatra. Called kohl when used as an eyeliner.
Sylvite - KCl
Carlsbad, New Mexico USA
Hematite - Fe2O3
Mina Casa de Pedra,
Minas Gerais, Brazil
Quartz - SiO2 on
Sphalerite - (Zn, Fe)S
Kapnik, Maramures, Romania