I read the article about space-originating plutonium. Looked up something about that in Wikipedia, noticed that there had been uranium mines in England, wanted to know more (I'm English), googled and found and read this.
I then submitted it because I thought the 1915 perspective on Uranium was interesting.
When I visited North Cornwall I noticed some dark grey but slightly metallic looking rocks. I was surprised how heavy they were, although they don't make good 'hammer' rocks because they break quite easily. They were usually embedded in other rocks, but occasionally you'd find one free.
I always assumed it was a type of coal.
Maybe I shouldn't have been playing with them if uranium is a main constituent...
The uranium and other radioactive substances are in the granite the north eastern states. I think the operative theory is the successive glaciations pushed most of the upper levels of the soil south, exposing the granite. Over the last 20k years, the soil is rather thin so you will see homes with basements that are not far from the granite. Radon then comes up and collects in these basements that aren't well ventilated.
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[ 2.7 ms ] story [ 21.2 ms ] threadI then submitted it because I thought the 1915 perspective on Uranium was interesting.
Fascinating.
When I visited North Cornwall I noticed some dark grey but slightly metallic looking rocks. I was surprised how heavy they were, although they don't make good 'hammer' rocks because they break quite easily. They were usually embedded in other rocks, but occasionally you'd find one free.
I always assumed it was a type of coal.
Maybe I shouldn't have been playing with them if uranium is a main constituent...
I live in Cornwall, am a programmer, and an amateur geologist so this post makes me very excited, hah!