The Tungusk Impact occurred in 1908. It was an atmospheric detonation of a comet fragment, believed by some (by trajectory trace and timing) to be a fragment of Comet Encke. The spherules produced were not simple hematite, but instead show a comtary origin. Even though the detonation occurred some kilometers up in the atmosphere, there was a crater produced on the ground, though a small one. Aside from the initial aerial detonation, there would have been lightening discharges in the ionized gas.

It did sound like World War 3.

There are still no fulgerites, and chaotic processes will sometimes appear similar.

Thanks for the Birkeland info and the Tesla coil eexperiments. You have to watch out for crank religious leaders who combine physics with "alternative physics" to account for "psychic phenomenon" and spirituality. Guard your soul and your sanity - send an e-mail to me at epgrondine at hotmail.com, and I'll send you a message which will explain it to you. Can you read Microsoft Word doc files?