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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.43 [2005] >
IJPAP Vol.43(02) [February 2005] >
| Title: | Mössbauer, X-ray and magnetization studies of basic volcanic and hyperbasal rocks |
| Authors: | Lal, Roshan
Sharma, N D
Taneja, S P
Chandra, Kailash |
| Keywords: | Mössbauer parameters
Magnetic susceptibility
Mössbauer spectroscopy
X-ray diffraction |
| Issue Date: | Feb-2005 |
| Publisher: | CSIR |
| IPC Code: | G01N 23/00, 24/00 |
| Abstract: |
The 57Fe Mössbauer, X-ray diffraction
and magnetic susceptibility studies were carried on two samples, basic volcanic
(basalt) and hyperbasal (dolerite) rocks, collected from Kundal area of Rajasthan, India
to identify iron-bearing minerals. Room temperature Mössbauer parameters of
basalt sample show the presence of hematite (Fe2O3),
aluminium substituted magnesioferrite [Mg(Fe2-xAlx)O4]
and illite. Iron is present as both Fe3+ and Fe2+ in
illite. Temperature dependence of magnetic susceptibility measurements shows no
transition around 120 K (Verway transition) for both the samples, indicating
existence of (Mg, Al) substituted spinel ferrites. These results have been
corroborated by X-diffraction and chemical analysis of the samples.
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| Page(s): | 119-122 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.43(02) [February 2005]
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