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Spongolite: a hollow fibrous mineral from Mato Grosso do Sul State, Brazil

Published online by Cambridge University Press:  09 July 2018

F. J . Dos Santos ,
O. Salgado Siqueira ,
A. A. S. T. Delben ,
J . R. Jurkevicz Delben  and
P. Melnikov
F. J . Dos Santos
Affiliation:
Department of Chemistry, Federal University of Mato Grosso do Sul (UFMS), Cidade Universitá ria s/n CEP 79070-900, Campo Grande (MS)Brazil
O. Salgado Siqueira
Affiliation:
Department of Chemistry, Federal University of Mato Grosso do Sul (UFMS), Cidade Universitá ria s/n CEP 79070-900, Campo Grande (MS)Brazil
A. A. S. T. Delben
Affiliation:
Department of Physics, Federal Universityof Mato Grosso do Sul (UFMS), Cidade Universitária s/n CEP 79070-900, Campo Grande (MS)Brazil
J . R. Jurkevicz Delben
Affiliation:
Department of Physics, Federal Universityof Mato Grosso do Sul (UFMS), Cidade Universitária s/n CEP 79070-900, Campo Grande (MS)Brazil
P. Melnikov*
Affiliation:
Department of Physics, Federal Universityof Mato Grosso do Sul (UFMS), Cidade Universitária s/n CEP 79070-900, Campo Grande (MS)Brazil
*
*E-mail: [email protected]
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Abstract

Spongolite from the State of Mato Grosso do Sul, Brazil, contains the remains of fossil sponges and hollow needles or microcapillaries with uniform surfaces. The central tunnels are ∼1/10 to 1/2 of the cylinder's diameter. The material is essentially X-ray amorphous though it contains small amounts of orthosilicic acids. The other main elements were Ti and Fe. Spongolite may have uses as a sorbent, as a bioavailable silicon source or, after blending with glass waste, it can be used in the fabrication of lightweight products having a closed-cell structure, potentially useful as an industrial insulator.

Keywords

spongolitehollow fibrous mineralMato Grosso do SulBrazil
Type
Research Article
Information
Clay Minerals , Volume 37 , Issue 2 , June 2002 , pp. 249 - 253
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2002

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