Mineralogical Museums and Collections
of the German Mineralogical Society
Type Mineral Specimen Catalogue Germany
Type mineral specimens are reference samples for the definition of mineral species. The holotype is the original specimen from which all data of a new mineral were derived. The definition of a holotype (as well as cotypes and types) is necessary to clear out doubts or questions, which could arise from erroneous or incomplete original descriptions. Incompleteness occurs due to the fact that the relevance of certain attributes of the holotype were not known at the time of the original description or scientific instruments necessary for the determination of certain attributes did not exist. Therefore it is essential to keep type specimens available for scientific reexaminations.