Jump to content
Innocentx

Mineral or fossil?

Recommended Posts

Innocentx

Found this on a gravel bar just below boundary to Permian but not sure about source.

I had some trouble getting focused photo of edges. I'm thinking possibly algae.

 

 

IMG_4537.JPG

IMG_45402.jpg

Share this post


Link to post
Share on other sites
Innocentx

IMG_4546.JPG

IMG_4548.JPG

IMG_4549.JPG

IMG_4550.JPG

Share this post


Link to post
Share on other sites
Tidgy's Dad

Drusy quartz, I think, or could be drusy calcite. 

See if it fizzes with weak acid. 

Share this post


Link to post
Share on other sites
hndmarshall

is there such thing as a carpet sponge?....but seriously to me it looks corral like and it is on a layered foundation of fossil material....but then I am a newbie and its a guess based on my observation...eagerly waiting for the experts opinions....

Share this post


Link to post
Share on other sites
abyssunder

bioeroded shell material?

Share this post


Link to post
Share on other sites
ynot

I think it is a mineral deposit,  wonder if this could be a bryozoan?

Can You post a close up picture of the surface (show in first picture).

Share this post


Link to post
Share on other sites
Innocentx

@Tidgy's Dad Yes, it fizzes.

@ynot Here's best close up I can get.

IMG_45564.jpg

Share this post


Link to post
Share on other sites
ynot

In my opinion it is a non fossil deposit of calcite. 

Share this post


Link to post
Share on other sites
abyssunder
11 minutes ago, Innocentx said:

Yes, it fizzes.

That means is not quartz, but calcite.

Share this post


Link to post
Share on other sites
Innocentx

I expect you're right. I've just never seen this configuration before.

Thanks for looking! @ynot @Tidgy's Dad @abyssunder and for your help.

 

@hndmarshall I thought sponge was a possibility as well. Good to know better!

 

Patty

 

 

Share this post


Link to post
Share on other sites
Tidgy's Dad

Calcite druse. :)

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.

×