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About the MIne

The Lucky Strike and Valley View Thunder Eggs Mines have Agates with the best range in colors, probably in the world. The eggs contain mosses, banded agate, fortification, plumes and geodes. The fees we charge are based on the weight of the mined products. Leonard Kopcinski (Kop) is the owner. Both mines have been open to the public for over fifty years. Both mines are also for sale.

We are located a mile high in the scenic Ochoco mountains about thirty-five miles northeast of Prineville, Oregon. Weather permitting; the mines will be open mid May through mid November daily from 8 am till 5 pm. While at the mines we think you'll have a great time and a great learning experience. For the serious rock hounds, after a day of digging lots of eggs (for only $1.00 a pound), free camping, water and an outhouse is available.

Come on up and visit us at the mines this Summer if you'll be in the area. We hope you can make it to dig, or just pick off the pills out in front of the mines, or just come up to say hi and have a cup of coffee and talk rock.

If you can't make it though we do have rough for sale by mail order. Visit our Mined Products section of our Web site and we're sure you'll see something you can't live without. http://www.oregonthundereggs.com

Be sure and check out our nieghbors website at


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Lucky Strike Mine
PO Box 128
Mitchell, OR 97750
Phone: 541-462-3073

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