Metal embedded in sedimentary rock, please help with ID

[motnis]

Hi,

I've broken the rock into pieces while looking for fossils, but instead of fossil i found some metalic mineral, does anybody know what can it be ?

Thanks!

Motnis

[adam]

Given the rusty type outline ( halo) I would think Iron Pyrite

[klunker]

I'd agree with Adam. It is a good gold indicator. What is the host rock? Did you find any fossils?

[The Found Dutchman]

I agree with Adam

[motnis]

Hi, thanks for you replies guys,

Actually the stone was just a boulder picked up from the sea shore, and split apart using the hammer. The boulder is a limestone,

I was just curious, what was the process that created that. Regarding the fossils, i found some, but not that much, I live in the area with no rocks and mountains, only boulders

Thanks

Motnis

Edited October 20, 2013 by motnis

[rockhunter1620]

Hi, thanks for you replies guys,

Actually the stone was just a boulder picked up from the sea shore, and split apart using the hammer. The boulder is a limestone,

I was just curious, what was the process that created that. Regarding the fossils, i found some, but not that much, I live in the area with no rocks and mountains, only boulders

Thanks

Motnis

In regard to yer Q. "What was the process that created that?" I found this in all about 10 seconds, so here ya go.

http://en.wikipedia.org/wiki/Limestone

RH

[motnis]

RH sorry im not an english speaking person, so maybe i formulated my question in the wrong way, by my question i mean , how this metal gets into the limestone

[Au Seeker]

Motnis,

First let me Welcome you to the forum!

Some fossils can be made entirely of pyrite, such as the ammonite pictured below, I really don't know that much about fossils, etc., but I'm very good at finding information on the internet, such as the picture below, here's a link to the webpage where the picture was found, the webpage explains what pyrite is, and how pyrite forms in sedimentary rock such as the limestone you found.

http://www.discoveringfossils.co.uk/pyrite_formation_fossils.htm

Here a link to more pictures of fossils made of pyrite..

http://www.bing.com/images/search?q=Fossils+made+of+pyrite&qpvt=Fossils+made+of+pyrite&FORM=IGRE

Here's a good read about fossils made of pyrite from China.

http://www.agiweb.org/geotimes/dec04/NN_pyritepreservation.html

[motnis]

Hello Admin,

As I admitted before, my English might be weak.

Thank you for sending me the links!, but unfortunately after couple hours of reading, I realized, that there is no fossil in my limestone, so.... please explain me, why do you explain a pyrite mine in the limestone by showing me the fossils? Is this a common practise to explain all kind of things using fossils (I'm new here, so please be forgiving).

Thanks

Motnis

Edited October 22, 2013 by motnis

[Au Seeker]

Motnis,

I'm sorry I forgot the post the first link where I found the picture of the pyrite ammonite, and where it explains how pyrite forms in rock, I added the link to my reply above, and here it is again.

http://www.discoveringfossils.co.uk/pyrite_formation_fossils.htm

I gave you the information to explain that even though you do not have a fossil in the limestone, but you do have some pyrite, it maybe possible that if you did find a fossil in some of the limestone from the same location, the fossil could be made of pyrite, I also posted the first link because it had the information on how pyrite is formed in stone which was a question you asked, this process would be the same for a piece of pyrite or a fossil made of pyrite.

All the other links I thought maybe of some interest too you.