Articles | Volume 33, issue 4
Eur. J. Mineral., 33, 503–517, 2021
Eur. J. Mineral., 33, 503–517, 2021

Research article 20 Aug 2021

Research article | 20 Aug 2021

Textural and genetic relationships between glauconite and celadonite at the nanoscale: two different structural-compositional fields

Fernando Nieto et al.

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Cited articles

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Amorosi, A.: Glaucony and sequence stratigraphy: a conceptual framework of distribution in siliciclastic sequences, J. Sediment. Res., 65, 419–425,, 1995. 
Bach, W. and Edwards, K. J.: Iron and sulphide oxidation within the basaltic ocean crust: implications for chemolithoautotrophic microbial biomass production, Geochim. Cosmochim. Ac., 67, 3871–3887,, 2003. 
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Baker, L. L., Rembert, W. C., Sprenke, K. F., and Strawn, D. G.: Celadonite in continental flood basalts of the Columbia River Basalt Group, Am. Mineral., 97, 1284–1290,, 2012. 
Short summary
Glauconite and celadonite are green micas which are significant as indicators of palaeoenvironments. They share similar chemical compositions, characterized by their Fe2+, Fe3+ and Mg content despite their white-mica structure; however, the chemical and structural relations were unknown. Their rare coexistence in volcanic rocks due to bacterial activity has allowed us, after an electron microscopy study, to identify a compositional gap between them justified by structural differences.