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Radioactive Feldspar

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Uploaded by on Jan 13, 2008

Short video showing the mild radioactivity of feldspar using my geiger counter. This sample was obtained at a local rock shop.

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Science & Technology

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Standard YouTube License

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Uploader Comments (summersja)

  • In guess it is the potassium 40 in the rock. I have some potassium aluminium sulfate and potassium iodide.

  • Yes, I imagine that is it. I have heard that bananas can actually give a reading on very sensitive meters because of the potassium.

  • whered u get the geiger counter from, and how much did it cost?

  • It was a gift- my brother gave it to me a while back. I believe he got it on Ebay.

  • Ya know you can get a reading off of kitty-litter.

  • Yes- and some ice melter uses potassium chloride also which will result in a reading.

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  • Was your beta shield open?

  • I guess that's possible. The number of disintegrations is probably a few thousand per second. For the human body, I read it is 4500 des/s

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