Mössbauer studies of raw materials from Misti volcano of Arequipa (Peru) for its potential application in the ceramic field

Angel Bustamante, Francisco Capel, Flora Barba, Pío Callejas, Rivalino Guzmán, Alejandro Trujillo

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


We would like to introduce, the study of two different colour "sillar" samples: white and pink, belonging to the Añashuayco quarry in the Arequipa Region (Peru). The X-ray diffraction (XRD) analysis indicates the presence of several mineralogical phases, such as feldpars and biotite for the both white and pink "sillar" whereas cristobalite and quartz are detected only in the first sample and amorphous phase in the second one. In room temperature, Mössbauer spectroscopy, the presence of hematite (α-Fe2O3) was detected as the main phase for both samples, this was not detected in the XRD measurements. Moreover, corresponding doublets in the Mössbauer spectra indicate the presence of iron in the aluminium-silicate minerals. The rates Fe2∈+∈/Fe 3∈+∈ are 0.0752 and 0.0526 to the white and pink samples respectively. The minerals composing the white tuff form a heterogeneous aggregate of uniform aspect. Mining of these materials generates a great amount of waste in the form of lumps of varying size and which are raw materials studied in the present work for potential application in the ceramic field.

Original languageEnglish
Pages (from-to)115-119
Number of pages5
JournalHyperfine Interactions
Issue number1-3
StatePublished - Apr 2009
Externally publishedYes

Bibliographical note

Funding Information:
Acknowledgements A.B.D thanks to the UNMSM for supporting this research, through the SEGUSM system. The Spanish authors thanks the support received of the Spanish Ministry of Science under project PLAN NACIONAL MAT-2004-2004-04923-C02-01.


  • DRX
  • Mössbauer spectroscopy
  • Raw materials
  • Tuff pyroclastic


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