Quick Search:    advanced search

GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help

This Article Figures Only Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Web of Science (1) Citing Articles via Google Scholar Google Scholar Articles by Mogessie, A. Articles by Leake, B. E. Search for Related Content GeoRef GeoRef Citation

AMPH-IMA04: a revised Hypercard program to determine the name of an amphibole from chemical analyses according to the 2004 International Mineralogical Association scheme

¹ Institute of Mineralogy and Petrology, University of Graz, Universitaetsplatz 2, A-8010 Austria
² School of Earth, Ocean and Planetary Sciences, Cardiff University, P.O.Box 914 Cardiff CF1 3YE, UK

^* E-mail: aberra.mogessie{at}uni-graz.at

In 2004, the International Mineralogical Association (IMA) amended the IMA 97 amphibole classification and nomenclature scheme by adding a fifth group to include the recently discovered ^B(LiNa) amphiboles ferriwhittakeriite and ferri-ottoliniite, which cannot be fitted into the four major amphibole groups. New root-names such as sodic-pedrizite in the Mg-Fe-Mn-Li group and obertiite and dellaventuraite in the sodic group along with two new prefixes, parvo and magno have also been added. As result it has become necessary to modify the AMPH-IMA97 amphibole-naming program. The new program (AMPH-IMA04) allows single input or automatic input of as many amphibole analyses as are available following a set input format. Any of three different calculation schemes for dealing with an amphibole analysis can be chosen: (1) complete chemical analyses can be calculated to 24(O,OH,F,Cl); (2) analyses with determined FeO and Fe₂O₃, MnO and Mn₂O₃ but without H₂O can be calculated to 23(O); and (3) electron microprobe analyses with only total Fe determined and without H₂O can be calculated to 23(O) with IMA97-recommended normalization for Fe³⁺ and Fe²⁺ values. In addition a stoichiometric calculation of Mn²⁺ and Mn³⁺ is considered and implemented for the Mn-bearing sodic amphiboles in order to take care of electron microprobe analyses of such amphiboles where the total Mn is given as Mn²⁺.

KEYWORDS: Hypercard, amphibole classification, amphibole-naming, IMA-nomenclature

This article has been cited by other articles:

				I. Baziotis, A. Proyer, and E. Mposkos High-pressure/low-temperature metamorphism of basalts in Lavrion (Greece): implications for the preservation of peak metamorphic assemblages in blueschists and greenschists European Journal of Mineralogy, January 1, 2009; 21(1): 133 - 148. [Abstract] [Full Text] [PDF]