What's this weird looking rock??

[VickyRenee]

It's the oddest looking thing!
It was found in northwest Missouri along the Grand River.
It's about 1" x 1.5" x 1"
Looks like mostly quartz, and is translucent, but it just has the weirdest look about it.
Is that agate inside? And there's a funny quartz ball on top LOL.

 

[laplander]

Reminds me of a geode. but I am no expert LOL

 

[VickyRenee]

Reminds me of a geode. but I am no expert LOL

I don't think it's a geode LOL I wish!

 

[JimmyCT]

It looks like fossilized bone but what the heck do I know? Lol

 

[VickyRenee]

I know right? That's what I first thought!
Doesn't it look like one of those chuck roast bones?? LOL!

It looks like fossilized bone but what the heck do I know? Lolfirst

 

[Geologyhound]

Looks like some sort of silicate void fill. When there is a hole in sediment or rock and silica rich water enters the hole, the drop in pressure causes some of the silica to precipitate on the surface of the hole. Over time, the hole will fill from the outside in, and you will have a cast in the shape of the original hole. The hole could originally have been from a gas pocket, dissolution of minerals along a fracture, or rotting of organic material like a branch or root. In the case of a wooden branch, the bark texture can sometimes be seen on the surface of the fill material. Agate filling of a limb void would be called a limb-cast.

Your piece has what appears to be flat “wings“, which are probably fill from an old fracture.

 

[Johnho]

Looks like a piece of agate. If you google "Agate formation" you will see the way it forms, pretty much as Geologyhound says.

 

[VickyRenee]

Looks like some sort of silicate void fill. When there is a hole in sediment or rock and silica rich water enters the hole, the drop in pressure causes some of the silica to precipitate on the surface of the hole. Over time, the hole will fill from the outside in, and you will have a cast in the shape of the original hole. The hole could originally have been from a gas pocket, dissolution of minerals along a fracture, or rotting of organic material like a branch or root. In the case of a wooden branch, the bark texture can sometimes be seen on the surface of the fill material. Agate filling of a limb void would be called a limb-cast.

Your piece has what appears to be flat “wings“, which are probably fill from an old fracture.

Okay, gotcha, makes sense, thank you.
It's so hard to know sometimes though!
I DO know that I've probably tossed rocks back that were hidden gems!
I'm still learning as I go!!!

 

[VickyRenee]

Looks like a piece of agate. If you google "Agate formation" you will see the way it forms, pretty much as Geologyhound says.

I do know quite a bit about agates, it's the hidden ones I'm having trouble with!! LOL

 

[hawgdawg]

Pretty cool find ,, update us if find out what it actually is.