Object Studies
Posted in general on April 30th, 2006
I promised an explanation as to why lately I’ve been wandering the strange halls of the Natural History Building. This (above) is it. A shoe-sized very heavy piece of semi-magnetic Nickel-Iron rock that I believe may be a meteorite, and around 4.4 billion years old.
I’ve mentioned this before. Searching through the warren of rooms and hallways undeneath my Grandfather’s apartment building, this was what I was looking for. Though I was beginning to think I’d never find it, a few weeks ago an expedition into the basement recovered, at last, the meteorite I remember my grandfather showing me years ago.
And although he had a habit of making up stories, I’m pretty sure that he himself believed this one. I found the meteorite in a brown paper bag with notes on it from when my grandfather took the meteorite to the Field Museum to have it identified. The results seem to have been inconclusive, with the museum rep telling my grandfather that the musuem would need to take posession of the thing before cutting it up to discern its true point of origin.
So I arranged last week to take the meteorite in tomorrow and meet with an emeritus professor of geology, who takes an interest in identifying meteorites. I must say, however, that the odds of my piece of iron actually being a meteorite seem small, given that it has some characteristics that are atypical of most meteorites. It has some bubble-like cavities that suggest a terrestrial origin. It has sharp edges that are usually more rounded in meteorties that have endured atmospheric descent. And I don’t think it exhibits the “fusion crust” that meteorites often have.
Yet (as a childhood space geek) I’m not prepared to decide that what I’ve got is a plaing old igneous rock, or a piece of industrial waste. There are meteories with irregular surfaces and even with bubble like structures. So we will tomorrow take this piece of cosmic mystery into the Geology department and await the crying of lot 49.
Any bets on what I’ve got? Does this meteor identification guide help? Or is it already clear enough to everyone that what I have is really a meteorwrong?




