Articles | Volume 33, issue 4
Eur. J. Mineral., 33, 503–517, 2021
https://doi.org/10.5194/ejm-33-503-2021
Eur. J. Mineral., 33, 503–517, 2021
https://doi.org/10.5194/ejm-33-503-2021

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, https://doi.org/10.1306/d4268275-2b26-11d7-8648000102c1865d, 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, https://doi.org/10.1016/s0016-7037(03)00304-1, 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, https://doi.org/10.2138/am.2012.4129, 2012. 
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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.