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

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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: BRAZIL; HOLLOW FIBROUS MINERAL; MATO GROSSO DO SUL; SPONGOLITE

Document Type: Research Article

DOI: http://dx.doi.org/10.1180/0009855023720031

Publication date: June 1, 2002

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