Mössbauer spectroscopy study of a mineral sample from Oshno hill, District of Chavín de Pariarca, Huanuco Region, Peru

A. Bustamante, Daniel Florencio Lovera Davila, R. Quille, A. V. Arias, Lourdes Janet Quiñones Lavado

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1 Scopus citations

Abstract

The analysis by X-ray diffraction of a mining sample collected from Oshno hill, which is located in the District of Chavín de Pariarca, Huamalies Province, Huanuco, Peru, indicates the presence of lepidocrocite (γ-FeOOH) and goethite (α-FeOOH). The room temperature Mössbauer spectrum (MS) doublet with broad lines displays hyperfine parameters corresponding to the presence of particles of iron hydroxides smaller than 100 Å in a superparamagnetic regime. The measurement of a MS at 4.2 K allowed confirming the presence of goethite and lepidocrocite (with average magnetic fields of 49.21 T and 44.59 T, respectively).

Original languageEnglish
Pages (from-to)63-68
Number of pages6
JournalHyperfine Interactions
Volume195
Issue number1
DOIs
StatePublished - Jan 2010
Externally publishedYes

Keywords

  • Goethite
  • Lepidocrocite
  • Mössbauer spectroscopy

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