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Even though the area has been worked by rockhounds for many years, quality thundereggs are still found at the site. There are also some rare rocks and minerals in central Oregon in or near the Ochoco Mountains, including opals, amethyst, gem quality calcite, cinnabar, selenite, gypsum, and amygdaloid nodules. [18] [19]
A thunderegg (or thunder egg) is a nodule-like rock, similar to a filled geode, that is formed within rhyolitic volcanic ash layers. [1] Thundereggs are rough spheres , most about the size of a baseball —though they can range from a little more than a centimeter (one half inch) to over a meter (three feet) across.
[6] [7] The world's largest known opal-filled thunderegg, weighing 1.75 tons (1600 kg), is housed at the museum. [ 7 ] [ 28 ] The thunderegg is Oregon's state rock. [ 29 ] Other items include azurite , Oregon sunstone , amber, copper crystals, zeolites , morganite , and agate among others.
Mill Creek Wilderness is a wilderness area located in the Ochoco National Forest of central Oregon.It was established in 1984 and comprises 17,400 acres (7,040 ha). [1] Of the three wilderness areas in the Ochoco National Forest - Mill Creek, Bridge Creek, and Black Canyon - Mill Creek is the largest and most heavily used.
Succor Creek is a 69.4-mile-long (111.7 km) [4] tributary of the Snake River in the U.S. states of Idaho and Oregon. [1] The creek begins in the Owyhee Mountains in Owyhee County, Idaho . [ 1 ] After flowing for about 23 miles (37 km) in Idaho, Succor Creek enters Malheur County, Oregon , where it flows for 39 miles (63 km) before re-entering ...
This is a list of current and former lighthouses in Oregon. ... Illustrated map Archived 2013-10-22 at the Wayback Machine showing location, range, photos, height ...
Map Baker County: 001: Baker City: 1862: Eastern portion of Wasco County: Named in honor of Edward Dickinson Baker, who died in combat while serving as Oregon senator. 16,912: 3,068 sq mi (7,946 km 2) Benton County: 003: Corvallis: 1847: Polk County: Named for Thomas Hart Benton, senator and advocate of U.S. annexation of the Oregon Country ...
The Calapooya Mountains in Lane County Mount Thielsen in the Cascade Range in southern Oregon The Pueblo Mountains south of Fields Trout Creek Mountains, Southeastern Oregon The Wallowa Mountains in northeastern Oregon. There are at least 50 named mountain ranges in the U.S. state of Oregon.