[JunkMail] [Rockhounds] mineral exhibit

[Kreigh Tomaszewski]

Alan,

Most stainless steel medical instruments use cobalt as an additive for 
strength, toughness, and for the ability to keep sharp edges.

I applaud your exhibit concept! When you finish it, would you consider 
sharing your list of common objects and the minerals that contribute to 
them? I'm always looking for for new ways to connect minerals to 
everyday life in my classroom presentations.

And since you are talking about dental stuff, don't forget the pumice 
grit and fluoride in toothpaste. I always get a reaction when kids find 
out they brush their teeth (also a mineral) with rocks.

Kreigh






On Saturday, Jul 12, 2008, at 09:36 America/Detroit, Alan Goldstein 
wrote:

> I am developing an exhibit on the use of rocks and minerals in our 
> daily life. I have found plenty of information at www.mii.org and at 
> the USGS. My plan is to set up an office with a computer, clock radio, 
> desk lamp, metal desk and chair, etc. and display minerals used to 
> make those products. (Also the floor, walls & paint, ceiling and room 
> lights...)
>
> I welcome exhibit suggestions.
>
> Question -- I'm going to display some dental picks. Does anyone know 
> what materials were added to the steel for strength. I know that 
> titanium, antimony, etc. are added to strengthen steel.
>
> Alan G.
>
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