|
In mineralogy, the type specimen, also known as type material, is a reference sample by which a mineral is defined.〔Dunn, p. 1269.〕 ==Types== The following definitions for kinds of type specimens were approved in 1987 by the Commission on New Minerals and Mineral Names and the Commission on Museums of the International Mineralogical Association (IMA).〔 ;Holotype A holotype is a single specimen from which the original description of the mineral can be determined in whole.〔 ;Cotype Cotypes are multiple specimens from which quantitative, but not necessary, data are obtained for the original mineral description.〔Dunn, pp. 1269–70.〕 ;Neotype A neotype is a new specimen for the redefinition or reexamination of a mineral when the holotype or cotypes cannot be located or, upon examination, are inadequate for study.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Type specimen (mineralogy)」の詳細全文を読む スポンサード リンク
|