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Hematite from a mining area in the east border of Quadrilátero Ferrífero, Minas Gerais, Brazil
| Content Provider | Semantic Scholar |
|---|---|
| Author | Pereira, Ana Rosa Passos Fabris, José Domingos Rios, Francisco Javier Rosière, Carlos Alberto Couceiro, Paulo Rogério Costa Ferreira, Fabio Furlan Menezes, Lucas Morais De |
| Copyright Year | 2010 |
| Abstract | Iron oxides are dominant minerals in many geo-domains of economical interest, as iron ore mines. Knowing the main mineral transformation pathways is a fundamental step to plan prospecting new mineral deposits. This study aimed at contributing to a better understanding of the chemical and mineralogical processes related to the genesis and transformations of iron oxides involving hematite in an iron-ore mine of the east border of Quadrilátero Ferrífero, Minas Gerais, Brazil. Two representative geo-samples were analyzed with synchrotron radiation X-ray diffraction (XRD), 57Fe Mössbauer spectroscopy, X-ray fluorescence and saturation magnetization (σ) measurements. The iron content varied from 65 to 69 mass% Fe. From XRD data, hematite is indeed the major mineral for all samples but characteristic reflections of goethite and magnetite also appear. For the magnetic sample, σ = 6.9 J T − 1 kg − 1. 298 K- and 110 K-Mössbauer data allow characterizing hematite in these iron-rich geo-materials. |
| Starting Page | 69 |
| Ending Page | 76 |
| Page Count | 8 |
| File Format | PDF HTM / HTML |
| DOI | 10.1007/s10751-009-0103-9 |
| Volume Number | 195 |
| Alternate Webpage(s) | https://page-one.springer.com/pdf/preview/10.1007/978-3-642-10764-1_12 |
| Alternate Webpage(s) | https://doi.org/10.1007/s10751-009-0103-9 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
