[Rockhounds] Color of Minerals

[Kreigh Tomaszewski]

Most lapidary diamond blades are designed to work with oil. The 
bearings on most saws are designed to work with oil.  Unless you have a 
saw designed to work with water, you will have to clean up the saw 
after every time you cut to minimize rust damage from the water. I 
personally think oil gives better cooling (and helps lubrication while 
preventing rust); YMMV.


On Monday, Mar 16, 2009, at 19:37 America/Detroit, paintricks at aol.com 
wrote:

> 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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