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Old 06-15-2012, 08:37 PM #17
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Default Re: 445nm through calcite = red

Quote:
Originally Posted by 123splat View Post
Dave,
Please post a pic of the Septarian under normal light. That's the wierdest response i've ever seen (under short wave, right?).

@OP, sorry for the thread jack....

As you can read from subsequent posts, the photo is not mine. I have a nice collection of fluorescent minerals, but I don't take vary good pictures

Quote:
Originally Posted by lazerman121 View Post
Top row 4th rock from right ME wanteee

also i have some rocks that glow red and green Under UV but not with 445nm
Minerals glowing under 445nm light are fewer than those glowing under UV light
Also, some will only react under short wave or long wave UV
Some will react differently under either
**In general** the reactions under short wave UV light are stronger than under long wave UV light

Peace,
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Old 06-16-2012, 05:12 AM #18
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Default Re: 445nm through calcite = red

Got it !
Many thanks to you both.
Unfortunately it looks like there aren't any good entries from the areas around my neck of the woods included there.
Guess I'll just have to look a bit harder myself with my new 405nm ebay cheapy.
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Old 06-16-2012, 06:28 AM #19
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Default Re: 445nm through calcite = red

Top row 4th rock from right c/b chalcedony, often glows bright in sw UV... -GH
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Old 06-16-2012, 06:36 AM #20
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Default Re: 445nm through calcite = red

Quote:
Originally Posted by lazerman121 View Post
Calcite is cheap order one now you have the laser.
Is this called rough cut optical calcite ?
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Old 06-16-2012, 06:16 PM #21
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Default Re: 445nm through calcite = red

I got some calcite to test with both my 445nm and my 405nm. Should be here later this week. You were right, by the way, it is quite cheap. I only ended up paying $5 including shipping for a brick of it.
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Old 06-17-2012, 05:03 AM #22
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Default Re: 445nm through calcite = red

Quote:
Originally Posted by trademark91 View Post
I got some calcite to test with both my 445nm and my 405nm. Should be here later this week. You were right, by the way, it is quite cheap. I only ended up paying $5 including shipping for a brick of it.
NICE. Now most calcite does not fluoresce I have 11 peaces of calcite and this is the only this one peace I showed works.
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Old 06-17-2012, 02:44 PM #23
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Default Re: 445nm through calcite = red

Hm, well, I'll find out if that one fluoresces when it gets here. If not, it was only $5. I've spent more than that on stuff I'll regret much more.

Well, just following up, this piece doesn't fluoresce. Too bad...
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Old 08-14-2012, 10:58 PM #24
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Default Re: 445nm through calcite = red

Quote:
Originally Posted by trademark91 View Post
Hm, well, I'll find out if that one fluoresces when it gets here. If not, it was only $5. I've spent more than that on stuff I'll regret much more.

Well, just following up, this piece doesn't fluoresce. Too bad...
Where did you find it that cheap?

I'm on amazon and small pieces are $5 shipped.

Thanks,
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Old 08-14-2012, 11:15 PM #25
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Default Re: 445nm through calcite = red

what would happen if you polished two paralleled ends or for to make a perfect box then shine your laser through? Im sure you need a pure crystal
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Old 08-17-2012, 01:21 AM #26
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Default Re: 445nm through calcite = red

As long as we're discussing things that glow when illuminated with a laser, try this:
In a very dark area, allow your eyes to get properly dark adapted and use a 405 to draw a line on a jar of peanut butter (close your eyes and just illuminate the PB for a moment) and you'll see that it phosphoresceses briefly--3-4-seconds. I discovered this at a party when, late at night, I was dotting things with my 405 to see what would flouresce and a jar of PB I lit up continued to glow after the beam hit it. I've since tried this on several brands of PB and they all glow. Weird huh?
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