please check this out expert needed

[fishdog]

can anyone help me id this weird rock I found..it looks like a fossil of a turtle head or maybe a bee/termite hive. it is heavy for its size(mans fist) looks to be in layers with a weird pattern on the bottom (linked hexagon shapes with round dot in middle) also has tunnels going inside of rock.

this is my first picture upload so I hope this will post.

[fishdog]

anyone seen similar? any comments or questions?

[leech~~]

Petrified cow dung!

[HotPocket]

looks cool

[ramjam]

Looks like pertified/agatized coral, but I'm no expert.

May try posting on this forum

Rock Tumbling Hobby

[pinkfloyd4ever]

Petrified cow dung!

Leech and Meatloaf say it best 'you took the words right out of my mouth'

+1 LOLOLOL

[fishdog]

SERIOUSLY FUNNY BECAUSE I FOUND IT ABOUT 100YTDS FROM THE AUSTIN MN CITY SEWER WATER ;WAIST WATER TREATMENT PLANT (AKA SH*T PLANT)

IT WAS IN CLEAR FLOWING RAPPID (SMALL) AREA IN THE CEDAR RIVER THE TOP WAS STICKING UP AND ATFIRST SIGHT I THOUGHT IT WAS A HUGE SNAPPER TURTLE UP FOR AIR,THEN HAD TO KEEP IT AFTER SEEING ITS STRANGENESS.

BUTT ,IT LOOKS LIKE A ONCE LIVING THING WITH THE CELL LIKE SHAPES ON THE BASE.

[itchmesir]

BUTT ,IT LOOKS LIKE A ONCE LIVING THING WITH THE CELL LIKE SHAPES ON THE BASE.

Well food is usually something that was once living... until we eat it... and crapp it out...

From the stories I hear of the Cedar... I don't know if I would've stuck my hand in the water to remove anything

[nofishfisherman]

The pattern on the bottom could have been from whatever it was laying on when it hardened. Some sort of rubber mat perhaps.

[leech~~]

What it does really look like to me. If you have ever been out to Yellow Stone park and seen the very small mud pots very slowy bubble, it does kind of looks like one that stopped forming after a while and harded?

[leech~~]

I sent this post and pictures to my son who is in his last year taking his Geology degree in collage and he sent back this reply.

It looks like limestone/dolomite that was deposited in a cave - like a stalagmite<http://en.wikipedia.org/wiki/Stalagmite> that was broken off and washed away.

Ask him if he can scratch it with a penny or a piece of glass, also ask him if the sample bubbles if you poor some vinegar on it.

Not sure what the test things mean but if you try them let me know and I will ask him what the results are you should be looking for?

[flyfisher03]

Limestone is made up of calcium that readily reacts with an acid (vinegar) and will bubble (if it is limestone). The scratching with a penny or piece of glass determines the hardness which can narrow it down some too.

[fishdog]

thank you for helping me,

vinegar has no effect when poured anywhere.

penny wont scratch it

I don't have broken glass so I used a scissors and still couldn't mark it.

it feels heavy and strong like, I could throw it and it wouldn't break (not brittle, or sand/limestone)

it is almost 2 lbs. and is the size of my fist.

[Connan]

Looks on the top like a petoskey stone. Which is fossilized coral. they are often found in the UP of Michigan.

[PierBridge]

thank you for helping me,

vinegar has no effect when poured anywhere.

penny wont scratch it

I don't have broken glass so I used a scissors and still couldn't mark it.

it feels heavy and strong like, I could throw it and it wouldn't break (not brittle, or sand/limestone)

it is almost 2 lbs. and is the size of my fist.

That's Kryptonite it most likely came from Superman's home planet of Krypton!..

Did Nofish really post some floor mats... come on man ..

[JeremyCampbell]

Lol

[fishdog]

Looks on the top like a petoskey stone. Which is fossilized coral.

THANKS CONNAN, YOU MAY BE RIGHT AFTER GOOGLING PETOSKEY ROCK, MINE LOOKS VERY SIMULAR TO GOOGLE PICTURES IVE FOUND.(ONLY THE PATTERN) MAKES ME WANT TO CUT INTO IT TO SEE IF THAT PATTERN IS INSIDE. THERES ALOT OF COOL POLISHED PETOSKEY ROCKS ONLINE.,

THANKS FOR YOUR INFO.,

GENE(FISHDOG).

IF ANYONE ELSE HAS ANY OTHER INFO OR HELP PLEASE POST..

ITS NOT [PoorWordUsage], AND MY SUPERMAN STRENGTH HASNT BEEN ALTERED BY IT ,

SO IM RULEING THAT OUT TOO..

[fishdog]

I still haven't found anything exactly like my rock/fossile anywhere online ,some are similar in hexagon pattern, but none look like mine on the other sides..

I am still looking for a expert for help...any one know of someone or somewhere I could take it in the Austin (MN) area??

thanks,

fishdog,

[bobbymalone]

stromatolite?

[fishdog]

its alive

!!!

[davidbigreelz]

That is most definitely a fossilized coral. It is of the acanthastrea genus. They are actually a very popular genus of corals for saltwater fish tanks. Other types of this genus are the common brain corals. The skeleton is made by laying down layers of calcium carbonate.