Back to Home

ATM Forum Message

Forums: Atm · Astrophotography · Blackholes · Blackholes2 · CCD · Celestron · Domes · Education
Eyepieces · Meade · Misc. · God and Science · SETI · Software · UFO · XEphem
RSS Button

Home | Discussion Forums | Amateur Telescope Making | Post
Login

Be the first pioneers to continue the Astronomy Discussions at our new Astronomy meeting place...
The Space and Astronomy Agora
Barnesite Avaiable In Small Quantity

Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To
Posted by Scott MacDonald on April 26, 2001 21:35:24 UTC

Hello.

We no longer use optical polishing compounds and I have a partial container of Barnesite #179 (perhaps 5 to 10 pounds or more) originally from Trojan Optical Abrasives, Buena Park, CA. This supply is likely 20 or more years old.

I have read information posted here about Barnesite. I have discovered additional information about Barnesite: it contains Vanadium -- and natural vanadium is slightly radioactive. I do not know if this Barnesite is an alpha emitter. Barnesite is apparently not a mix of cerrium and thorium oxide, as posted 1-25-01 by Stephen Campbell.

In a related matter, I also learned that Cerium is not radioactive (as in Cerium Oxide), however, commercial grades of this material may be contaminated with Thorium, which is radioactive.

As with any finely divided material, do not inhale the dust.

Our Barnesite is surplus and I can arrange for its donation to an astronomy club, for example.

It is available to you if you provide a written request for the material and arrange pick-up or shipping.

Thanks for your interest.

R. Scott MacDonald
EH&S Specialist
Northrop Grumman GCS
Goleta, California
macdonas@littongcs.com

Follow Ups:

    Login to Post
    Additional Information
    Google
     
    Web www.astronomy.net
    DayNightLine
    About Astronomy Net | Advertise on Astronomy Net | Contact & Comments | Privacy Policy
    Unless otherwise specified, web site content Copyright 1994-2021 John Huggins All Rights Reserved
    Forum posts are Copyright their authors as specified in the heading above the post.
    "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET"
    are trademarks of John Huggins