Usually anytime during winter or early spring is good. There is usually some decent material here at any time of the year, but prime agate hunting season is definitely the time to come. Shell fragments and conglomerate pieces are most common, but occassionally you will also find a nice complete piece to add to your collection. Clam fossils that have eroded from the Astoria Formation are commonly washed up along this beach. Some of these can be particularly beautiful and are a favorite of mine.įossils are also abundant along this beach. I have also found more than a few “jaspagates” along this stretch of beach, in which a piece shows characteristics of both jasper and agate within the same stone. Iron inclusions within the stone can be credited with the reddish color that is commonly seen.
Jaspers are an opaque variety of silica there are very hard (6.5 – 7 on the Mohs scale) that have different colors depending on the impurities within the stone. Jaspers are abundant in a variety of colors along this beach, ranging from reds and yellows, to brown and green colors. Get the new book: Agate Hunting on the Oregon Coast: A Guide to the 40 Best Agate Hunting Sites Not only are agates abundant here, but there is a nice variety of different types available to the collector, including rare varieties of blue agate. This part of the coast is one of the best sites to agate hunt in the entire state. There is about 2 miles of prime area to search for beachcombing.
I recommend walking south along the seashore toward Seal Rock. Ona Beach is right in the heart of prime agate hunting. This site gives you several miles of great beach access in each direction. There is a large parking area and some a nice nature trail to the beach which crosses Beaver Creek. Access is right off of Highway 101 and well-marked. Ona Beach State Park is approximately 9 miles south of Newport and 7 miles north of Waldport.
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