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109,626 users

Would you please verify if this is banded agate?

+1 vote



I think I have found my comparison stone for banded agate. It is 12.2oz , 5" widest point, 1 1/2 " Height at center:






I almost fell over when I googled Banded Agate and a picture popped up that had  almost the same characteristics as this one. I have my fingers crossed that I am right. It will make sorting a great deal easier. From this piece, I can use my books to start to identify (or at least guess more accurately) the contents of intimidating boxes.

Any help or direction would be greatly appreciated!


asked Oct 23, 2015 by Dizzard (830 points)

1 Answer

+1 vote
Yes it is, where did you find it, beach, mine or field, closest city and state.
answered Oct 23, 2015 by Weasel (58,940 points)

Michigan.  I  remember this piece because it is one of the three sisters that I learned to polish stones on, but I will have to call my brother for the city- he drove. I believe I have 3 or 4 from Minnesota, - and a few from Vt. ,we have a home in Barre. I will call my brother tonight to see if he remembers.

It occurred to me that we followed a glacier map  We picked up quite a few, good size, rough along the way. The Stone I posted is from Mn, in St. Cloud.
 What we called the 3 sisters- They were rough, uncut, approximately the same  large size with very close coloring- about 1 1/2  lb each were also found in St Cloud. As the volcanoes erupted the glaciers slid leaving agate behind.( I just came upon the reason there were agates in central MN today- which triggered memories and when I spoke with my brother he reminded me that I have banded agates form all over- Arizona, Italy etc. My favorite has always been the blue and the red. I some rough that may or may not be agate. It is hard to tell if it is Jasper or chert instead. I am working on a piece that possibly be Scilified Stromatoporoid or just good old banded chert- yep.

That's the very best my brother and I can remember, it has been quite a few years since those zany trips.
Following is the list we can remember:


Calmut- There is a park there, sorry I don'r remember what it was.
Esprey Park - Shore

Eagle River has beautiful stones all the way down to Eagle Harbor- Shore
Houghton- Good place to stay - has some stones, but is central to a few good areas for banded Agate
Gratiot River Beach

Central Mn is where we hunted, we found quite a few really nice, fair sized banded in:

Holdingford- field.
Cayuna Lake

My aunt was in the granite business, therefore we were allowed in several  Quarries and mines that are off limit to the public.
Farm land is a excellent source, most landowners will allow you to hunt around IF you don't smoke, drink anything but water in a bottle that he has marked and you must turn in on your way out and you can have no more then 15 rocks a piece IF you leave the rest of the land the way you found it and haven't dug 30 holes in the ground and not pushed the dirt back in.