Microstructural Characterization of Ornamental Rock Samples: Cariri Rocks

Article Preview

Abstract:

Ornamental rocks are among the most promising business areas of the mineral sector, raising the necessity for, besides beauty, investments in quality, safety and characterization in the various application fields of these rocks. So, this work aims at the microstructural characterization of the class of these rocks: the Cariri Rocks, also known the limestone, which are calcareous rocks mainly formed by calcium and magnesium carbonate, possibly presenting variations due to their origins. For characterization, we studied four samples, being two from Chapada do Apodi and two from Chapada do Araripe, characterized physically and micro-structurally through chemical analysis, X-ray diffraction, optical micrography and porosimetry tests. The results prove that the limestones are calcitic and dolomitic, and present porosity varying from 5 to 15%, with pores concentration between 100nm and 10μm, besides the high microstructural heterogeneity.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

159-163

Citation:

Online since:

August 2016

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2016 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] A.G. Costa, M.S. Campello, V.B. Pimenta: Rev. Geonomos Vol. 8 (2000), p.9.

Google Scholar

[2] A.A.P. Sousa, R. Rodrigues, Consumo dos principais insumos no desdobramento de granitos do nordeste de diferentes grau de dureza, In: III Simpósio de Rochas Ornamentais, Anais, CETEM – Centro de Tecnologia Mineral – Ministério das Ciências e Tecnologia. Recife/PE-Brazil, 2002, p.171.

Google Scholar

[3] E.B. Pereira, F.A.C. Roberto, M. Amaral, Situação atual e diagnóstico do setor de rochas ornamentais do nordeste. Estudos econômicos sobre rochas ornamentais, Instituto Euvaldo Lodi-FIEC/IEL, Fortaleza/CE-Brazil, 5 (1997) 149.

DOI: 10.11137/1997_0_181-200

Google Scholar

[4] C.J.N. Holanda, A.E.P. Gomes, E.B. Melo, R.J.L. Maranhão, Calcários de Pernambuco: rochas para fins industriais, Minérios de Pernambuco, Recife/PE-Brazil, 1987, p.29.

DOI: 10.47593/2675-312x/20213401eabc131

Google Scholar

[5] F.W.H. Vidal, M.W.M. Padilha, R.R. Oliveira, Aspectos do Aproveitamento dos Rejeitos da Pedra Cariri. In: I Congresso Internacional de Rochas Ornamentais, Guarapari/ES-Brazil, (2005).

Google Scholar

[6] V.A. Mendes, Os jazimentos de rochas ornamentais e sua relação com os eventos tectônicos atuantes no território brasileiro. In: III Simpósio de Rochas Ornamentais do Nordeste, Recife/PE-Brazil, (2002).

DOI: 10.11606/d.18.2007.tde-07052008-085848

Google Scholar

[7] F.W.H. Vidal, M.W.M. Padilha, R.R. Oliveira, Estudo de exploração preliminar dos rejeitos da pedra cariri–CE, In: I Simpósio Brasileiro de Rochas Ornamentais, Guarapari/ES-Brazil, (2005).

Google Scholar