Jump to content
Noah

Are these real fossils or pseudofossils?

Recommended Posts

Noah

Hello I found these at Frenchman MT Southern NV. Are these real fossils or fakies? I just recently found a trillobite body imprint there so I know that there are fossils there. If anyone wants a good fossil hunting place in Southern NV that is the place, it is owned by the BLM so you can take most fossils you find.

IMG_0337.JPG

IMG_0335.JPG

Share this post


Link to post
Share on other sites
Fossildude19

Welcome to the Forum. :) 

I think they are Pseudofossils. 

They look like dendrites

Regards, 

Share this post


Link to post
Share on other sites
abyssunder

I agree !

Share this post


Link to post
Share on other sites
caldigger

 

Yes, dendrites.

Share this post


Link to post
Share on other sites
Fossildude19

Let's leave the politically charged comments at the door, please. :) 

Thanks. 

 

Share this post


Link to post
Share on other sites
Noah
1 hour ago, Fossildude19 said:

Welcome to the Forum. :) 

I think they are Pseudofossils. 

They look like dendrites

Regards, 

Aww to bad, thanks for the help. Its great to be here. :)

Share this post


Link to post
Share on other sites
fifbrindacier

I agree they are nice dendrites.

Welcome from France.:)

Share this post


Link to post
Share on other sites
abyssunder

This might be interesting : Pyrolusite dendrites

Share this post


Link to post
Share on other sites
Plax

looks more like plant material to me. Have seen a lot of dendrites and they are usually more distinctive. Not saying they aren't dendrites; just saying I haven't seen them that look like this.

Share this post


Link to post
Share on other sites
tmaier

"Let's leave the politically charged comments at the door, please. "

For some it's a emotional topic to deal with. My grandfather was killed by a dendrite falling on his head, while splunking in Virginia. To this day, my nan-na breaks down in tears when she sees any type of mineral crystalization.

"I haven't seen them that look like this. "

The geometry looks like manganese crystal growth to me. They do fade in and out, so I think the line of fracture is not following the plane of the dendrite. The dendrite has to be contiguous to grow properly, so it is likely diving above and below the fracture plane.

Share this post


Link to post
Share on other sites
ynot

Definitely dendritic manganese.

 

Nice ones!

 

Tony

Share this post


Link to post
Share on other sites
Plax
On 11/29/2016 at 10:24 AM, tmaier said:

"Let's leave the politically charged comments at the door, please. "

For some it's a emotional topic to deal with. My grandfather was killed by a dendrite falling on his head, while splunking in Virginia. To this day, my nan-na breaks down in tears when she sees any type of mineral crystalization.

"I haven't seen them that look like this. "

The geometry looks like manganese crystal growth to me. They do fade in and out, so I think the line of fracture is not following the plane of the dendrite. The dendrite has to be contiguous to grow properly, so it is likely diving above and below the fracture plane.

I should have said I haven't seen them transecting multiple layers of rock. Usually they are on one bedding plane.

Share this post


Link to post
Share on other sites
abyssunder

I'm not familiar with the region, but if the place where the trilobite imprint was found is Frenchman Mountain Trilobite Quarry which is located on the east side of the Las Vegas Valley at the base of Frenchman Mountain,I think the chance for plant material could be very low. There are predominantly trilobites and tracefossils of the Cambrian period. The first land plants occurs in the Late Ordovician and they were spores, later, they began to diversity in the Late Silurian.

 

section.jpg

Cross Section of Frenchman Mountain

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.

×