Articles | Volume 35, issue 6
https://doi.org/10.5194/ejm-35-949-2023
https://doi.org/10.5194/ejm-35-949-2023
Research article
 | 
13 Nov 2023
Research article |  | 13 Nov 2023

Near-infrared signature of hydrothermal opal: a case study of Icelandic silica sinters

Maxime Pineau, Boris Chauviré, and Benjamin Rondeau

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Cited articles

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Short summary
We study Icelandic silica sinter samples formed in hot-spring environments to evaluate the effect of both temperature and microstructure on the spectral properties of hydrothermal opal. We show that spectral changes can be related to different parameters such as fluid temperatures, hydrodynamics, microbial activity, and silica micro-textures, which are specific to their environment of formation within hot-spring geothermal contexts.