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Rick S
Awhile back Chet ask the question, how many states can you find quartz crystals. It was amazing how many you came up with. Now I have one. How many states and countries can you find geodes. The common ones like Iowa, Missouri, Ill., Utah and Kentucky are easy. Where else can you find them. I'd like to start a collection of atleast one from every location the board can come up with.I have an oco from Mexico. I understand they are somewhat rare and can't be gotten anymore????
Hi Rick,

You can CO and UT to your list. I don't have any pictures of them.

KOR Carl in WI
Jack Cole
Rick S.

Solid or hollow, Any vug Gas pocket or wash out, May be a Geode.

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Our which state dos`t have Agate formations, All west of the Mississippi river \that i know of.

? New Orleans

( Nodule ) Heres a word used with the State rock Of Home

I have Cobalt Nodules off west coast of the Baja 1200 miles.

They grow from center outward.

Geode inward.

Interesting thread. I just met a fellow and his wife yesterday who had been on his grandfather's "back forty". The guy had heard I was a rockhead so he hunted me down and wanted me to look at his finds. He had pulled out what looked like the druse from missouri but it was formed all over, in and around sandstone. He took it to the university over in riverfalls and had a geologist look at it. She told him it was druse quartz.

Dark reddish to pink to purples. He kept talking about pulling out lumps and breaking them open to find this stuff in side. Some small pieces had very nice shaped small quartz crystals that were amethyst purple in color. He has swapped some nice pieces for some of my Iowa and Missouri geodes and some of my Vulcan Quarry stuff. He will collect more and I want to bring some with me when I come down to Kentucky for the fluorite pick.

All this to say that I believe he has geodes...they are pockets of pockets of pockets of druse...from Chippewa Falls, Wisconsin. So, maybe I can add Wisconsin to your list, well, that is as soon as I get you all to take a look at it too.
Looking forward to Kentucky!
Rick S
I've gotten a few emails and these replys. I've decided that in some form or another, geodes are found in every state and I would bet 75% of countries. Geodes, Agate, nodules, in some way can be called what I call a geode. My list of states is already up to 39. So, I guess my real search would have to be, how many states can produce a "geode" that is atleast alittle hollow and has some kind of quartz or mineral in it. Cori, it looks like you have just what I'm talking about. The internet is great and with alittle work in the right places alot can be found out. I will be searching for states that can show me a "geode" with something inside it, along with help from McRocks.I'll keep you posted as to how it's comming.
Add Idaho to your list. Here is an example of what I found 2 weeks ago near Hog Creek.

I have some lovely, but small, geodes I found here in Arizona. Will have to post a picture of some soon.
Rick S
Thank you to those that have helped me in this quest. Still have several states to go. If you have geodes from your area (state) and would be interested in donating or selling a couple, let me know where your at and if ones are needed from there, we will work something out for them.
Ron Streeter
Why don't you post a list of the 10 or 12 states you DON'T have on your list?

That might encourage THOSE states to come forward.
Rick S
Ok, good idea. Here are a few I have yet to get any reply on. Kansas, South Dakota, Miss., Texas, Nebraska, Washington, Florida, Ohio, NJ, NH, Tenn. Anybody help on these??
Brewster County, Texas: thin shelled geodes contain drusy amethyst. Also at the Henderson Ranch 31 miles south of Alpine, Texas.

Sierra Oguia Park in Big Bend National Park at an elevation of 5810 feet, quartz geodes contain small to drusy crystals and botryoidal bluish white chalcedony.

Clay COunty, Joy, 6.5miles NW along a county road ditch, white clacite crystals with a faint fluorescenceline geodes from the Wichita Group with copper, chalcocite, aragonite, and dolomite.

Travis Peak area 1 mile N of FM 1431: Glen Rose limestone contains numerous nodules and geodes lined with scalenohedral calcite crystals. The above is from: Mineralogy of Texas by Arthur Smith.
Rick S
Denise are you in Texas? Sounds like alot of places for geodes. If you are in Texas, would you consider a trade of a couple of your geodes for a couple of upper midwest ones. I don't trust getting any off Ebay, for the reason I don't know and most of the time the seller dosen't know where they came from.I'm trying my best to make sure they come from the state that I say they are. Anyone else that would consider a trade is welcome to let me know too. Rick S
Sorry Rick, my list was just to let you know that there are places in Texas where geodes occur. I do not have any from Texas. Good luck on your quest!

Let us know how it goes.
Don Peck
Hi Rick;

I don't want to rain on your parade, but the definition of a geode above is a bit expansive.

The Dictionary of Geological Terms published by the American Geological Institute, says:

"geode Hollow, globular bodies varying in size from an inch to a foot or more in size, and characteristic of certain limestone beds, while rarely found in shales. Significant features are (1) subspherical shape, (2) a hollow interior, (3) a clay film between the geode wall and enclosing limestone matrix, (4) an outer chalcedonic layer, (5) an interior drusy lining of inward projecting crystals, and (6) evidence of expansion or growth."

I believe that by definition, geodes only occur in sedimentary environments, so vugs in igneous rock and pockets in metamorphic rocks don't count. Two critical factors are #3 and #4 above.

To the best of my knowledge, and I could be wrong, there are no geodes in NJ and none in any of the New England states.

found geode in south dakota. they are rather common here.
Kelly Clever
There are geodes in the Englewood Formation above Deadwood, South Dakota. I haves tons of them!

Mike Streeter
Hi Kelly -

Thanks for the information - good information to know.  Can you describe or show pictures of the geodes?


Lots of quartz geodes in Tennessee!  I've collected several buckets full.

when i was young my grandfather and i used to collect geodes (or dinosaur eggs, as i liked to call them) alongside the river in eastern washington. more specifically; burbank, wa. (a little town outside of kennewick) where the snake river joins the colombia river. i don't have pictures, and it was a long time ago, but if i remember right they were mostly amethyst (which very deep purple) and clear quartz. some of the clear quartz had the "snowball" look about them, on the inside. happy hunting!  :0)

Dear Rick S.;

    This'll be easy - just add every continental state west of the west of the Mississippi River (other than WI); also might add IN, GA, & OH (although there's only one location & they are collapsed geodes).

Your friend, Steve
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