Neoformation of halloysite on volcanic glass in a marine environment
- 1 June 1987
- journal article
- Published by Mineralogical Society in Clay Minerals
- Vol. 22 (2) , 179-185
- https://doi.org/10.1180/claymin.1987.022.2.06
Abstract
Transmission electron microscopy of ultramicrotomed thin-sections of Pleistocene and Eocene glass shards revealed the neoformation of (i) illite and (ii) halloysite at the glass periphery. According to previous experimental studies, halloysite neoformation in marine environments can occur on glass shards deposited in Si-rich sediments; an excess of Ca tends to inhibit the reaction.Keywords
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