Help Identify This Rock, Eastern KY

[wayniebee]

Hallo!

I've collected these rocks from the creek bed on our estate for the last year or so. They come out of a hardened clay bank under some falls in the creek. They really stick out for they're very odd shaped, deep red in color with some orange on some rocks. They've VERY dense and rather heavy for their size and when broken open, the inside usually has crystals in them (notice in the first two photos). I think they're really cool and would love to know what they are. Any help is GREATLY appreciated.

Thanks!
wayniebee

 

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[loco oro]

looks like maybe an intrusive into sandstone ,which would have leached and morphed the silicates .then your stream eroded the softer sandstone leaving these (polished) nodules.question, is there sandstone nearby?

 

[rock]

I believe them to be called mud stone. Looks like they have some quartz mixed into them. Mud stone is sediment rock. I carried one home from the river near me and I read it is the oldest type of stone there is.

 

[Brian T. Booth]

Hallo!

I've collected these rocks from the creek bed on our estate for the last year or so. They come out of a hardened clay bank under some falls in the creek. They really stick out for they're very odd shaped, deep red in color with some orange on some rocks. They've VERY dense and rather heavy for their size and when broken open, the inside usually has crystals in them (notice in the first two photos). I think they're really cool and would love to know what they are. Any help is GREATLY appreciated.

Thanks!
wayniebee

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Howdy wayniebee,

Welcome to TresureNet,

I'm from Southeastern Kentucky, Whitley county. You have microcrystalline quartz nodules. They are dense and relatively heavy for their size. I find these often too. Great to see another Kentuckian on here. If you have any questions just ask. Happy Hunting

 

[wayniebee]

looks like maybe an intrusive into sandstone ,which would have leached and morphed the silicates .then your stream eroded the softer sandstone leaving these (polished) nodules.question, is there sandstone nearby?

There is sandstone in the creek bed, yes, but these stones come out of very hard rocks in and under the falls. I have to admit, I'm not too very learned when it comes to geology, hence my wondering of these stone :P hahah.

 

[wayniebee]

Howdy wayniebee,

Welcome to TresureNet,

I'm from Southeastern Kentucky, Whitley county. You have microcrystalline quartz nodules. They are dense and relatively heavy for their size. I find these often too. Great to see another Kentuckian on here. If you have any questions just ask. Happy Hunting

Hallo! Thanks for the info, I looked up microcrystalline quartz nodules and can't seem to find anything that looks like these, but that description exactly identifies these stones. And thanks for the welcome, I'm in Pike county myself.

 

[Brian T. Booth]

Hallo! Thanks for the info, I looked up microcrystalline quartz nodules and can't seem to find anything that looks like these, but that description exactly identifies these stones. And thanks for the welcome, I'm in Pike county myself.

Here are some pics of some quartz nodules that look similar to the ones you have found.

 

[rock]

Looks like flint or chert which is probably classified as quartz type of stone.

 

[Brian T. Booth]

Looks like flint or chert which is probably classified as quartz type of stone.

Yes. Chert, flint, Jasper, chrysoprase, chalcedony, agate, and onyx are all types of microcrystalline quartz.