A crystal or crystalline solid is a solid material whose constituents, such as atoms, molecules or ions, are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions. In addition, macroscopic single crystals are usually identifiable by their geometrical shape, consisting of flat faces with specific, characteristic orientations.
CRYSTAL CATEGORIES
CRYSTAL
Location: San Luis Potosi, Mexico
Location: Thomas Range, Juab Co., Utah
Location: Pacococha, Huancavelica Dept., Peru
Location: Hongquizheng, Meingu, Xichang Area, sichuan, SW Region, china
Location: Xue Bao Diang Mnts., Sichuan, China
