Josiah Ogram

I am between sandpoint and CDA. A place called carywood.

I know there must be clay here, but I have not seen it yet.
Its good to know sandpoint is known for it.

I came here expecting to see clay and earth like other places I have lived along the west coast. But was surprised to find we live on absolute mountains of granite sand and gravel! It is unlike anything I have seen till now.

Do you have similar earth there? As I understand it this sand and gravel was produced by flood waters that might have originated in Montana and swept all the way down to the Oregon coast where I used to live. (the bandon dunes area)

Thank you Thomas. That sounds cheaper than what I have seen so far. I like the price!

Hello,
Thank you for taking a look at my question.

I have done enough reading to understand that most people don't need the answer to this question. Because they use what they have. Simple enough.

My situation is not as simple.
I live in north idaho and have not found any clay bearing earth. I have a very small amount of soil, on top of sand and gravel. This sand gravel mix goes down more than 4 feet.

I have all the sand and aggregate I could hope for.

I want to buy clay to make cob, this is possible because the project is not so big as to make buying the clay a problem.
I have my pick, and I see many choices.


So my particular question is this:
Is there any clay I should NOT use?


I am new to this so feel free to offer any advise but I particularly want to know the answer to the above question.

-Josiah