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Colorado Rare Earth Minerals
Denise
post Jul 31 2015, 08:14 AM
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Great information and pictures Dave!! Looks like your onto some really cool stuff. You definitely have the eye/nose for the good stuff in the dirt. Keep up the good work! greensmilies-012.gif


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Dave S.
post Mar 23 2017, 12:41 PM
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I would like to make an update about the Xenotime crystal at the top of this post. After getting an X-ray refraction test at the Geology Museum, even the "experts" are having a tough time to identify this crystal.

It has the crystal structure of a Xenotime-(Y). And has the elements needed for that. But it also contains Thorium and abnormally high amounts of Cerium, Gadolinium, and Neodymium. Causing the "experts" to think that it may have various mixes of Monazite in it, or that it is mostly Monazite. But they admitted that even with the chemical data, they can't say for sure.

But everyone agrees that it is a very rare, and an interesting find!

The crystal (whatever it really is) will be displayed at the Geology Museum for the next year (in the rare-earth or Pike's Peak mineral display) at the Colorado School of Mines.

I'm gonna go see it, and get some more pics of the crystal, and a pic of the chemical readout for ya'll.
char098.gif


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EMac
post Mar 23 2017, 12:58 PM
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QUOTE (Dave S. @ Mar 23 2017, 01:41 PM) *
I would like to make an update about the Xenotime crystal at the top of this post. After getting an X-ray refraction test at the Geology Museum, even the "experts" are having a tough time to identify this crystal.

It has the crystal structure of a Xenotime-(Y). And has the elements needed for that. But it also contains Thorium and abnormally high amounts of Cerium, Gadolinium, and Neodymium. Causing the "experts" to think that it may have various mixes of Monazite in it, or that it is mostly Monazite. But they admitted that even with the chemical data, they can't say for sure.

But everyone agrees that it is a very rare, and an interesting find!

The crystal (whatever it really is) will be displayed at the Geology Museum for the next year (in the rare-earth or Pike's Peak mineral display) at the Colorado School of Mines.

I'm gonna go see it, and get some more pics of the crystal, and a pic of the chemical readout for ya'll.
char098.gif


Very cool and congrats! That's an awesome museum. I was just there a couple weeks ago.


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johnnybravo300
post Mar 23 2017, 01:15 PM
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Wow awesome find.
Is there a way you can use a detector or Geiger counter to find more of that?
That's not a crystal you'd want to clean off in your mouth! Very cool.


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Dave S.
post Mar 24 2017, 08:55 AM
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QUOTE (johnnybravo300 @ Mar 23 2017, 02:15 PM) *
Wow awesome find.
Is there a way you can use a detector or Geiger counter to find more of that?
That's not a crystal you'd want to clean off in your mouth! Very cool.



Thank you Johnny,

Yeah, you would'nt want to clean anything at my brothers claim with your mouth. Lots of weird mineral deposits and elements.

I don't think a metal detector would work very well.(Mikes gold bug 2 does not even pick up the Hematite, or Goethite, both iron minerals.)

A Geiger counter might work, but most regular Xenotime has very low radiation. This one is an exeption, because of the Cesium and Thoruim content.

Here is a pic of the X-ray refraction results:

Attached Image


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CP
post Mar 24 2017, 02:27 PM
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Very cool Dave, that is very interesting, what a sweet specimen! thumbsupsmileyanim.gif


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Dave S.
post Mar 27 2017, 11:01 AM
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Sorry, in my last post I said Cesium, but the element (Ce) is Cerium. Oops!


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