الملخص
Two specimens or natural chromite from the Oman ophiolite were studied using Mossbauer Spectroscopy (MS), X-ray Diffraction (XRD). and Scanning Electron Microscopy (SEM). The diffraction patterns obtained at room temperature showed that the two specimens have a face-centered cubic spinal structure. Their Mossbauer spectra at 295 K. 160 K and 78 K have been fitted to three doublets. assigned to two Fe 2+ at the tetrahedral (A1+,A2) sites and one Fe1+ at the octahedral (B) site. The ferrous-ferric ratio obtained from the Mossbauer analysis together with the atomic concentration derived from the microprobe data are used to derive the chemical formulae for the two specimens. The data also supports also supports a model of ordered caution distribution in the specimens examined.
الكلمات المفتاحية
بيانات النشر
- المعرّف الرقمي
- 10.24200/squjs.vol1iss1pp55-61
- المجلة
- مجلة جامعة السلطان قابوس للعلوم, 1(1), 55
- الناشر
- جامعة السلطان قابوس
- وصول مفتوح
- وصول مفتوح ذهبي
- الترخيص
- CC BY 4.0
اقتبس هذه المقالة
APA 7
Al-Alawi, Z., Gismelseed, A. M., Yousif, A. A., Worthing, M. A., Sutherland, H. H., Rais, A. M., Elzain, M. E., & Al-Rawas, A. D. (1996). Cation Distribution in Natural Chromites from Oman. Sultan Qaboos University Journal for Science, 1(1), 55. https://doi.org/10.24200/squjs.vol1iss1pp55-61
MLA 9
Al-Alawi, Z., et al. "Cation Distribution in Natural Chromites from Oman." Sultan Qaboos University Journal for Science, vol. 1, no. 1, 1996, pp. 55. https://doi.org/10.24200/squjs.vol1iss1pp55-61.
شيكاغو (المؤلف–التاريخ)
Al-Alawi, Z., Abbasher Mahmoud Gismelseed, A. A. Yousif, Michael A. Worthing, Hector H. Sutherland, A. M. Rais, Mohamed E. Elzain, and A. D. Al-Rawas. 1996. "Cation Distribution in Natural Chromites from Oman." Sultan Qaboos University Journal for Science 1 (1): 55. https://doi.org/10.24200/squjs.vol1iss1pp55-61.
هارفارد
Al-Alawi, Z., Gismelseed, A. M., Yousif, A. A., Worthing, M. A., Sutherland, H. H., Rais, A. M., Elzain, M. E. and Al-Rawas, A. D. (1996) 'Cation Distribution in Natural Chromites from Oman', Sultan Qaboos University Journal for Science, 1(1), pp. 55. doi:10.24200/squjs.vol1iss1pp55-61.
فانكوفر
Al-Alawi Z, Gismelseed AM, Yousif AA, Worthing MA, Sutherland HH, Rais AM, et al. Cation Distribution in Natural Chromites from Oman. Sultan Qaboos University Journal for Science. 1996;1(1):55. doi:10.24200/squjs.vol1iss1pp55-61
IEEE
Z. Al-Alawi, A. M. Gismelseed, A. A. Yousif, M. A. Worthing, H. H. Sutherland, A. M. Rais, M. E. Elzain, and A. D. Al-Rawas, "Cation Distribution in Natural Chromites from Oman," Sultan Qaboos University Journal for Science, vol. 1, no. 1, pp. 55, 1996, doi: 10.24200/squjs.vol1iss1pp55-61.