There are tons of agates scattered across the state of Washington. In Central Washington, you can find gold in the Columbia River, Liberty Creek, Mary Ann Creek, or the American River. and Teanaway Ridge, both sides of road, Ellensburg, N of town weathering out of lava flows, Liberty, along Williams & other area creeks, Petrified Forest State Park, outside boundaries, Columbia River, gravels & sands S of Vantage, Klickitat River, 6 mi. To determine what type of public land a particular location is on, I would recommend starting with the Washington Department of Natural Resources State Trust Lands Map and the Washington Non-DNR Major Public Lands Portal. The geodes often contain crystalline quartz, sometimes amethystine, calcite, siderite, and goethite. Collectors have the opportunity to find beautiful agates, amethysts, garnets, jaspers, opals, and even the occasional nugget of gold. A type of fossilized wood, namely petrified wood, can be found in the Petrified Forest State Park and can be collected in certain places. They stood thirteen feet tall or more and weighed around ten tons. These agates form when the void spaces left by air pockets in cooling basalt lava flows are subsequently filled with microcrystalline quartz. If you're searching an ash bed, limestone area, or especially a riverbed, use a shovel to lightly scrape the sediment around. For the most up to date events, check out our Gem, Mineral, and Fossil Newswire. Rivers and riverbanks are great areas to find geodes because the flowing water can help expose geode-bearing rocks (like basalt or limestone) that might otherwise be hidden underground. Alaska. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/b\/bc\/Find-Geodes-Step-1.jpg\/v4-460px-Find-Geodes-Step-1.jpg","bigUrl":"\/images\/thumb\/b\/bc\/Find-Geodes-Step-1.jpg\/aid9433325-v4-728px-Find-Geodes-Step-1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"