Ferric iron in upper mantle Cr-spinels: a Mossbauer spectroscopic study

S. Nasir, A. F. Lahlooh, S. Mahmood, I. A. Al-Jarayesh

نتاج البحث: المساهمة في مجلةمراجعة النظراء

2 اقتباسات (Scopus)

ملخص

Mossbauer spectra for 14 Cr-bearing spinels, separated from spinel lherzolite xenoliths, were measured to study their Fe2+-Fe3+ crystallographic ordering. Spectra acquired at 298 and 77 K suggest that both Fe2+ and Fe3+ are tetrahedrally coordinated in lherzolite Cr-bearing spinels with low Fe3+/Fetot ratios. The investigated Cr-spinels show similar hyperfine parameters, quadrupole splittings and isomer shifts to Mossbauer studies of upper mantle Cr-spinels from lherzolite xenoliths as reported elsewhere, suggesting the similarity in Fe2+ and Fe3+ ordering. -from Authors

اللغة الأصليةEnglish
الصفحات (من إلى)369-375
عدد الصفحات7
دوريةChemie der Erde - Geochemistry
مستوى الصوت53
رقم الإصدار4
حالة النشرPublished - 1993

ASJC Scopus subject areas

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