Jump to content
Nugget Shooter Forums

Grinding meteorites


Recommended Posts

I am assuming, and correct me if I am wrong here; When you use a bench grinder, with a "metal" type grinding wheel, as apposed to a "masonry" grinding wheel, silver metal forms on the grinded part of the rock :confused0013: . Is that true?? Or is every rock on the planet a genuine meteorite?? :laught16:

I ground some meteorite maybes today, and most, when done, appeared to have metal inside. If I sand them with a 220 grit sand paper they mostly turn back to a rock color and the silver metal color disappears.

Again, I am assuming that should not happen if they are meteorites. :confused0013:

So basically grinding them with anything less than a diamond grinding wheel is a waste of time, no?

And I probably would get much better results if I cut them with a wet saw??? Or am I doing something wrong??

Help please.....I really want to see if they are, it's killing me. :hmmmmmm:

Link to comment
Share on other sites

Aloha,

Why waste your time with a grinder when you can use a plain old diamond file from harbor freight. It is cheaper and you can carry them out in the field for a quick check. You just need to make a small window in the corner of your rock to see if it is a keeper or a meteorwrong. Just my :twocents: .

Aloha and be safe out there,

Stan aka Kaimi

Link to comment
Share on other sites

I just found diamond sharpening stones that can be carried in a pocket in the field. Some are two sided, 400 grit and 1000 grit. Others are pocket size for 15 bucks. I am also ordering a combination lapidary machine that has a 6 inch wet trim saw, which I am getting a meteorite blade for, and a flat top conversion, and edger conversion; 3 in 1 tool for $399. http://www.inlandlapidary.com/singleproduc...artnum=10690399. Check it out and let me know if you guys think it would work, looks to be a meteorite preparers dream.

Link to comment
Share on other sites

Appreciate the advice. Buy cheap, buy twice. Problem is, it's what I can put into it right now...399. I think as long as I use good blades, the saw part should be OK, and I can always use the machine for cutting and shaping tile. My 7 year old son and I went to a pay to dig mineral site in NC last winter and he has a 1 gallon can of adventurine, rubies and such, so I thought it might be fun to try and turn them into faceted stones (oblong marbles most likely :laught16:) If some of these rocks end up being rarer meteorites, maybe I'll spring for a better set up to properly prepare them.

Link to comment
Share on other sites

For Stan................PS: Thanks for turning me on to that Harbor Freight Company. Cool site, I have been looking for an inexpensive abrasive cabinet for cleaning relics and they had one for 149 bucks. Cheapest I found yet was a grand. I couldn't stop buying tools though :laught16: Web shopping is too easy, that's for sure....now if someone knows a link to garages or pole barns, I'll be all set. :hmmmmmm:

Aloha to you

Link to comment
Share on other sites

digitrich,

A plain ole fingernail file will do the field work that you need..... That is all that I carry in my pack for putting a window on a suspect stone.

Jim

Link to comment
Share on other sites

Hi Digitrich,

I have been using a bench grinder to cut a quick window into rocks for some time now and do not have the problem that you spoke of. I suggest you get a different wheel or dress the wheel you have to remove metal that may have accumulated from a metal grinding job.

Jim

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...