fulgurites), which show evidence of ejection (e.g. spheroidal, filamentous, or aerodynamic), related by composition to Type II and Type IV fulgurites
* phytofulgurite - a proposed class of objects resulting from partial to total alteration of biomass (e.g. grasses, lichens, moss, wood) by lightning, described as "natural glasses formed by cloud-to-ground lightning." These were excluded from the classification scheme because they are not glasses, so classifying them as a subset of fulgurites is debatable.

Significance

The

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