[Rockhounds] Calcite

[Kreigh Tomaszewski]

John,

Bill is on the far side of MI from you, so I should get first chance.

But I learned it as VIBGYOR.

Maybe I have it backwards and Bill gets first choice.

I have no problems with Bill getting your specimen; I know it will be 
seen by many more students than I could share it with. I can't think of 
a better fate for a specimen than to be worn out by the fingers of 
children.

Your specimen would be the second calcite I have ever seen with a full 
spectrum (where do I see the picture?).

No fight, I'll give up. Send the specimen to Bill. Thanks for letting 
us fight it out for the specimen.		;-}

Cheers!

Kreigh





On Tuesday, Dec 9, 2008, at 00:01 America/Detroit, John Siebel wrote:

> I'll let you guys fight it out! This one has the whole ROYGBIV.
>
> John
>
> ----- Original Message ----- From: "Kreigh Tomaszewski" 
> <Kreigh at tomaszewski.net>
> To: "Rockhounds at drizzle.com: A mailing list for rock and gem 
> collectors" <rockhounds at lists.drizzle.com>
> Sent: Monday, December 08, 2008 8:15 PM
> Subject: Re: [Rockhounds] Calcite
>
>
>> I wish I had said that. ;-}
>>
>> I have some "Christmas Calcite" that has alternating red and green 
>> stripes visible on some surfaces. I understand it is due to 
>> sub-surface cracks, with lightwave length gaps, that produce 
>> interference, much like oil slicks on water.
>>
>> Kreigh
>> On Monday, Dec 8, 2008, at 07:02 America/Detroit, William Dicks wrote:
>>
>>> John:
>>>     You could label it with my name and address and ship it 
>>> "overnight
>>> express"!!!!:-))
>>>
>>>>>> john at pandemoniumgraphics.com 12/06/08 6:56 PM >>>
>>> I've got a handsome calcite on stilbite from Coffin Butte, OR (one of
>>> many).
>>> In the proper light it shows a rainbow. How should I label it? I'm
>>> thinking
>>> prismatic perhaps?
>>>
>>> John
>> http://www.eclecticlapidary.com/Rockhounds/index.html
>
>
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