Cristobalite and K-feldspar in the Nakhlite Mil03346: a Cathodoluminescence

نویسندگان

  • H. Chennaoui Aoudjehane
  • A. Jambon
  • O. Boudouma
چکیده

STUDY. H. Chennaoui Aoudjehane, A. Jambon and O. Boudouma, Université Hassan II Aïn Chock, Faculté des Sciences, Equipe Géoressources, BP 5366 Maârif Casablanca Morocco (e-mail : [email protected]), Université Pierre et Marie Curie-Paris6 Laboratoire MAGIE, Case 110, 4 place Jussieu, 75252 Paris, France (email: [email protected]), Université Pierre et Marie Curie-Paris6 Service de microscopie électronique à balayage, Case 110, 4 place Jussieu 75252 Paris, France (e-mail: [email protected]).

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Effect of impurities on cathodoluminescence of tridymite and cristobalite

Cristobalite and tridymite in andesite and obsidian exhibit bright blue emissions in color cathodoluminescence (CL) images. CL spectra of cristobalite and tridymite show emission bands at 400 and 430 nm, respectively. Their CL intensity decreases with an increase in the electron irradiation time, similar to the short-lived blue luminescence reported in hydrothermal quartz. The reduction rate of...

متن کامل

Cathodoluminescence Characterization of Maskelynite and Alkali Feldspar in Shergottite

IN SHERGOTTITE. M. Kayama, T. Nakazato, H. Nishido, K. Ninagawa and A. Gucsik Research Institute of Natural Sciences, Okayama University of Science 1-1 Ridai-cho, Okayama, 700-0005, Japan ([email protected]), Department of Applied Physics, Okayama University of Science 1-1 Ridai-cho, Okayama, 700-005, Japan, Max Planck Institute for Chemistry, Department of Geochemistry, Joh.-J. Becherweg 27...

متن کامل

Additional Complexities in Nakhlite Pyroxenes: a Progress (?) Report

Introduction: Nakhlites are olivine-bearing clinopyroxene cumulates [e.g., 1]. Based on petrographic characteristics, they may be divided into groups that cooled at different rates and may have been formed at different depths in a single flow [e.g., 2, 3]. The order of cooling rate is Lafayette < Governador Valadares ~ Nakhla < Yamato000593 < NWA817 ~ MIL03346. Nakhlite cumulus pyroxene grains ...

متن کامل

A Study of Na/K Feldspar Solid Solution Using Statistical Mechanics

Thermal behavior of various solid feldspars are different, namely those of bivalent cations show no change in the distribution of Al and Si atoms, whereas feldspars of univalent cations become more disordered with raising temperature. In the latter case Al atoms migrate from the sites they occupe at low temperatures and interchange positions with the Si atoms. At high temperatures (but stil...

متن کامل

[Influence of spectral interferences on the results of quartz determination by infrared spectrometry].

BACKGROUND Determination of quartz by Fourier transform infrared spectrometry (FTIR) is not specific: the obtained results are influenced by matrix components, some of which cause spectral interference. The aim of the study was to evaluate the effect of dust components responsible for spectral interference with quartz on the results of its determinations, and to develop methods to minimize the ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2005