Deschutes & Ochoco National Forests
Crooked River National Grassland
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Newberry National Volcanic Monument |
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Conservation Ed. |
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Our Service We welcome your comments on our service and your suggestions for improvement. |
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Deschutes National Forest (541) 383-5300 Ochoco National Forest (541) 416-6500 Crooked River National Grassland (541) 475-9272 |
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Recreational Activities
Rockhounding SitesGlass ButteRock Type: varied obsidian Site Description: Glass Butte offers rockhounds a wide variety of gem quality obsidian. Rainbow, black, pumpkin, mahogany, midnight lace, gold sheen, silver sheen, fire, and double flow varieties can all be found in the area. While many rockhounds choose to dig for preferred material, plenty of obsidian is readily available for collection on the ground surface. Directions: Available on Central Oregon Rockhounding Map, Purchasing Info Road Access: Not Maintained Site Information: Muddy when wet. 4x4 vehicle recommended. Agency: Bureau of Land Management
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| Glass Butte is a volcano that formed about 4.9 million years ago and is part of series of volcanic domes that are aligned in a northwest direction. Most of Glass Butte itself is composed of rhyolite flows. In the low lands about 3 miles east of Glass Butte and on Little Glass Butte 4 miles to the southeast, several eruptions produced the obsidian flows that rockhounds collect from today. | |
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USDA Forest Service - Deschutes & Ochoco National Forests
Last Modified: Wednesday, 23 February 2005 at 11:18:21 EST