Rapid Raman mapping of a fulgurite

@article{Carter2010RapidRM,
  title={Rapid Raman mapping of a fulgurite},
  author={Elizabeth A. Carter and Matthew A Pasek and Tim Smith and Terence P. Kee and Peter Hines and Howell G. M. Edwards},
  journal={Analytical and Bioanalytical Chemistry},
  year={2010},
  volume={397},
  pages={2647-2658}
}
AbstractA fulgurite is a naturally occurring glass formed when lightning hits sand, rock, or soil. The formation of fulgurites is accompanied by mineralogical and sometimes compositional changes, and may record information about the environment in which they were formed. A previous investigation using Raman point spectroscopy discovered the presence of anatase, a low-temperature polymorph of TiO2, and polyaromatic hydrocarbons within a fulgurite. These findings indicate that there were regions… Expand
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Zircon dissociation to ZrO2 and SiO2 is a high-temperature, relatively low-pressure phenomenon, consistent with previous suggestions that lightning strikes involve extreme temperatures as well as pressures greater than those usually generated in Earth's crust but rarely > 10 GPa. Expand
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TLDR
The Raman spectra revealed several forms of crystalline and fused silica and also the presence of polyaromatic hydrocarbons found in an interfacial zone of a glass bubble, suggesting that some regions of the fulgurite specimen were not subjected to temperatures of 1800°C, which are attained when lightning hits the surface of sand or a rock. Expand
The fulgurite of Torre de Moncorvo (Portugal): description and analysis of the glass
The fulgurite of Torre de Moncorvo (Portugal) was formed by lightning striking a small electricity pylon; it consists morphologically of a central cylinder with radial ramifications several metresExpand
Paleoecology reconstruction from trapped gases in a fulgurite from the late Pleistocene of the Libyan Desert
When lightning strikes the ground, it heats, melts, and fuses the sand in soils to form glass tubes known as fulgurites. We report here the composition of CO 2 , CO, and NO contained within theExpand
Oxide reduction during triggered-lightning fulgurite formation
Abstract In this study triggered-lightning induced fulgurites were formed in 99.9% pure binary oxides of manganese (MnO) and nickel (NiO) in order to study oxide reduction mechanisms. The fulguriteExpand
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