ID - Looks like fish or frogs eggs.

[IcarusZulu]

Hi

I found this rock that I split open thinking it may be an Agate. Then decided to polish - my first ever polish. I notused what looks to be fish eggs or frogs eggs and was wondering if this could be a fossil?

I cant tell you where it came from other than somewhere in South Africa. I bought a collection of river rock pebbles form the hardware some years ago for outside my patio drainage. The kids have been breaking the pebbles up over the years finding Agate, Maganatie and other interesting rock formations however this looks diferent to the usual.

[Al Dente]

I'm guessing this was originally oolitic limestone that became silicified.

[Fossildude19]

I agree, ... geologic in nature,... not a fossil.

Regards,

[Vieira]

For me is geologic too.

[digit]

Yup. Oolites was my first thought when I saw this.

 

https://en.wikipedia.org/wiki/Oolite

 

Cheers.

 

-Ken

[doushantuo]

thought so, too

one from my  sedimentology library,a fairly recent piece

yooliticsands-2014.pdf

[jpc]

I see geologic as well, but not sure about oolites.  Oolites have concentric rings when seen in cross section.  I don't see them in these.  

[supertramp]

1 hour ago, jpc said:

I see geologic as well, but not sure about oolites.  Oolites have concentric rings when seen in cross section.  I don't see them in these.  

yes,

maybe these are "ghost" silicified oolites http://www.insa.nic.in/writereaddata/UpLoadedFiles/PINSA/Vol44A_1978_3_Art03.pdf

 

ciao

[jgcox]

Geologic

 

[abyssunder]

It could be an interesting read, unfortunately I don't have it : Diagenetically formed ooids and intraclasts in South African calcretes

[abyssunder]

Thank you, Scott!