ICSD (Inorganic Crystal Structure Database) is an information service in crystallography. It contains the crystallographic data of published crystalline inorganic structures, including atom coordinates, dating back to 1913. Organometallic and theoretical structures have been added within the past years. Each record includes crystallographic data, chemical and physical property data, and bibliographic information for any publication items referencing the structure. It covers the fields of crystallography, mineralogy, geology, materials science and inorganic chemistry.