[Rockhounds] Color of Minerals

[paintricks at aol.com]

Speaking of oil.? Is it better to cut with oil or water.? Seems the mist given off by the blade may make it a little more messy.?I have an old saw so it's a pain to take apart to clean it.
? Thanks Kreigh,..:)


-----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: Mon, 16 Mar 2009 5:54 pm
Subject: Re: [Rockhounds] Color of Minerals


Look at what you have cut recently and see if any of it has a green streak. Some substances, like psilomelane, seem to make much finer particles when cut and stay suspended in the oil, coloring it. Psilomelane will turn your oil black within seconds.?
?
Kreigh?
?
On Monday, Mar 16, 2009, at 13:02 America/Detroit, Robert Betty Thomson wrote:?
?
>?
> Hello?
>?
> I was wondering if someone could help me with question. It might sound > weird, but here it goes. Is there any rock, gem or mineral that you > would cut in a rock saw that would make the oil go and green sage > color. I have never come across this in all the years I have been > cutting. This one is stumping me. Any way that the oil would oxide > itself????????? Hope someone can help. The only thing I can think of > is someone was careless and added something to the oil, trying to > casue damage Thanks for your help?
>?
> Robert & Betty?
>?
>?
>?
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