Why this rock
is probably not a meteorite:
The dark "coating" is much to thick for a meteorite fusion crust. The
finder said that a sharp edge would scratch glass. That means it
contains quartz, and quartz doesn't occur in meteorites.
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What is it?
Hard to say. I'd like to see this one
up close.
Note added later: A correspondant from England said: "We
see a lot like this in Southern England on the chalk downs. I even
have a piece myself - Somewhere in the dozens of rock boxes I've
got. The
sharp edges are 'lethal' and can cut up raw meat
very very easy." Thanks, Phill.
Göran from Sweden says the same thing - It's flint nodules
(dark) in a piece of chalk (light).
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