Resumen
This report is about the X-ray diffraction and Mössbauer studies of three impactite samples denominated PMe-8, PMe-9 and PMe-11 from Huamalies Province in Huánuco Region, Peru. When terrestrial rocks are submitted to pressures higher than 60 GP, the majority is completely melted, forming a kind of glass called impactites. X-ray diffraction indicates the presence of quartz as the principal mineralogical phase in all samples. The 57Fe Mössbauer spectra at room temperature of samples PMe-8 and PMe-9 show broadened spectra that were fitted using a distribution model. The most probable field of the magnetic component is 34 T, corresponding to the presence of small particles of goethite, confirmed by the 4.2 K spectrum. For the sample PMe-11, the MS showed the presence of well crystallized hematite.
Idioma original | Inglés estadounidense |
---|---|
Páginas (desde-hasta) | 585-591 |
Número de páginas | 7 |
Publicación | Hyperfine Interactions |
Volumen | 166 |
N.º | 1-4 |
DOI | |
Estado | Publicada - 1 nov. 2005 |
Palabras clave
- Goethite
- Hematite
- Impactites
- Mössbauer spectroscopy