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[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.
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.
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]
This list of museums in Oregon encompasses museums defined for this context as institutions (including nonprofit organizations, government entities, and private businesses) that collect and care for objects of cultural, artistic, scientific, or historical interest and make their collections or related exhibits available for public viewing.
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.
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.
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 ...
Location Coordinates Year first lit Automated Year deactivated Current Lens Height Cape Arago Light: Coos Bay: 1866 (First) 1934 (Current) 1966 2006 (Now tribal land) None 44 ft (13 m) Cape Blanco Light: Port Orford