1970
DOI: 10.3329/bjsir.v45i1.5173
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Alteration and Exsolution Characteristics of Ilmenites of Moheskhali Island, Chittagong, Bangladesh

Abstract: Mineralogical analysis of Moheskhali beach sands revealed the presence of high amount of ilmenite. About 50% of these ilmenites are unaltered which are characterized by the presence of exsolution of ilmenite with hematite, ilmenite with magnetite, and ilmenite with rutile. Others (50%) are unexsolved where 30-50% grains partially or fully altered. These altered and unaltered phases of ilmenite are confirmed by X-Ray diffraction study. Ilmenite-hematite exsolution comprising 70-80% of the total exsolution. The … Show more

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Cited by 8 publications
(2 citation statements)
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“…The Ti/(Ti+Fe) ratio ranged between 0.51 and 0.6, almost the same as [28], which gives ranges between 0.5 and 0.6. The Fe/Ti ratio ranged from 0.91 to 0.67, which is different from the given by [29] that stated that the molar ratio Fe/Ti for ilmenite is 1.02, decreases to approximately 0.84 for pseudo-ilmenite and 0.64 for PSR. NT ranged between 90.24 and 101.27 wt%.…”
Section: Table II Chemical Composition Of the Different Analyzed Spot...contrasting
confidence: 86%
“…The Ti/(Ti+Fe) ratio ranged between 0.51 and 0.6, almost the same as [28], which gives ranges between 0.5 and 0.6. The Fe/Ti ratio ranged from 0.91 to 0.67, which is different from the given by [29] that stated that the molar ratio Fe/Ti for ilmenite is 1.02, decreases to approximately 0.84 for pseudo-ilmenite and 0.64 for PSR. NT ranged between 90.24 and 101.27 wt%.…”
Section: Table II Chemical Composition Of the Different Analyzed Spot...contrasting
confidence: 86%
“…The identified HM suite of interest from these occurrences includes the minerals ilmenite, rutile, zircon and RE-containing monazite. Opportunities for developing HM deposits in Bangladesh have largely focused on the high-grade coastal sand deposits (Ahmed et al 2010); however, recent work by Rahman et al (2014, 2016) has explored the emerging potential for sourcing HMs from the widespread river sand bar placer deposits associated with some of the extensive sand-bedded river systems (e.g. the Brahmaputra-Jamuna and Ganges-Padma systems).…”
Section: Introductionmentioning
confidence: 99%