Erling,
Good evidence of a lightning strike would be to find silica glass
in the sample.
eric
>Dear colleagues,
>our department recently received a sample of spongy graphite. Under the
>lens it has a pumice-like texture indicating it has been in a molten state.
>This, however, appears to be unlikely considering the extreme T required.
>Our best guess so far is that this could be a result of lightening strike.
>Does this sound likely? Have any of you heard of a similar phenomenon?
>
>
>Best wishes
>
>Erling Ravna
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