Hallo
wieder mal was Neues von der IMA-Front.
Der untenstehende Artikel informiert über die Wechsel, welche sich durch das von der IMA-CNMNC neu vorgestellte Schema zur hierarchischen Amphibol-Supergruppen-Klassifizierung und zur neuen Nomenklatur ergeben. Es steht zudem ein in Visual-Basic geschriebenes PC-Programm zum Benennen monokliner Amphibole zur Verfügung und kann heruntergeladen werden.[www_crystal.unipv.it].
Originaltext:
Reference:
▪ Oberti, R., Cannillo, E., Toscani, G. (2012): How to name amphiboles after the IMA2012 report: rules of thumb and a new PC program for monoclinic amphiboles. Periodico di Mineralogia, 81, 257-267.
Abstract:
Major changes have been introduced by the new scheme for amphibole classification and nomenclature for the amphibole supergroup recently approved by the Commission on New Minerals Nomenclature and Classification of the International Mineralogical Association, a scheme which adheres to the concepts of dominant group valency and dominant ion. The hierarchy of classification now proceeds through the W (→groups), B (→subgroups), and C and A (→rootnames) ions in a rational and comprehensive scheme which takes into account aspects of amphibole stability based on synthesis work. The new rules are here discussed in a simple and application-oriented manner, and the procedure to be followed to correctly classify and name amphibole compositions is outlined. A PC program (written in VisualBasic) for naming monoclinic amphiboles according to the new rules is now available by downloading from the website of CNR-IGG, UOS of Pavia: [www_crystal.unipv.it].
Gruß
Peter Seroka