Jump to content
Jonesing

How do I preserve a sand dollar fossil found at a beach?

Recommended Posts

Jonesing

We found a couple of sand dollar fossils in a hard matrix. From what I have read today I can’t get the  hard matrix off without some special air tools. What should I do to preserve the specimens? 

E51C7043-19BE-47F0-82AB-AAC4EE5CDC1C.jpeg

Share this post


Link to post
Share on other sites
DPS Ammonite

I have several sand dollars from near Daly City. They are quite stable and need no preservation. They also can be further prepped by grinding and polishing the cemented sand and outer layer of the echinoid.  

Share this post


Link to post
Share on other sites
Jonesing

How would you polish it? I have a rock tumbler but I feel like that would destroy it. 

I’m new to fossils. 

Share this post


Link to post
Share on other sites
ynot

Heavens no! Do not put it in a tumbler, that would destroy it.

It should be possible to sand it down with wet/dry sandpaper.

Start with a coarse grit (120) and work down to a fine grit (600+). The finer grit You use the better it will look.

You can polish it after sanding.

 

 

 

PS Welcome to TFF! and nice piece.

Share this post


Link to post
Share on other sites
RJB

I was going to guess that that is Dendraster excentricus, but I think its Scuttilaster major?  I would buy an n exspensive dremel and grind down the rock parts using some type of grinding wheel and then some sanding barrels of different grits and then polish it.   I use a white ruge stick for metal to polish mine.

 

RB

MVC-025S.JPG

foredomhand.JPG

Toolcabinet.JPG

Dollar.jpg

IMG_0390.JPG

Share this post


Link to post
Share on other sites
DPS Ammonite

The species is: Scutellaster interlineatum.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Recently Browsing   0 members

    No registered users viewing this page.

×