Glass Butte, located in central Oregon, is a renowned destination for rockhounds and gem enthusiasts. This unique site offers a rare opportunity to dig for free obsidian gems, making it a paradise for those who love geology and collecting precious stones. The butte is situated in a remote area, approximately 30 miles north of the city of Bend, and is easily accessible via a well-maintained dirt road.
Geology of Glass Butte
The geology of Glass Butte is characterized by the presence of extensive obsidian flows, which were formed as a result of ancient volcanic activity. Obsidian, a naturally occurring volcanic glass, is created when lava cools rapidly, resulting in a smooth, glossy texture. The obsidian found at Glass Butte is particularly prized for its clarity, color, and conchoidal fracture pattern, making it highly sought after by collectors and lapidaries.
Types of Obsidian Found at Glass Butte
Glass Butte is known for its diverse range of obsidian types, including:
- Black obsidian: The most common type found at the site, characterized by its dark, glossy appearance.
- Rainbow obsidian: Displays a beautiful, iridescent sheen, caused by the presence of microscopic gas bubbles.
- Sheen obsidian: Exhibits a bright, metallic luster, resulting from the reflection of light off the surface of tiny inclusions.
- Gold sheen obsidian: Features a striking, golden-colored sheen, making it highly prized by collectors.
Visitors to Glass Butte can dig for obsidian in designated areas, using hand tools such as rock hammers, chisels, and shovels. The site is managed by the Bureau of Land Management (BLM), which provides guidelines and regulations for collecting obsidian. It is essential to follow these rules to ensure the long-term sustainability of the site and the preservation of this unique geological resource.
| Type of Obsidian | Characteristics |
|---|---|
| Black Obsidian | Dark, glossy appearance |
| Rainbow Obsidian | Iridescent sheen, microscopic gas bubbles |
| Sheen Obsidian | Bright, metallic luster, tiny inclusions |
| Gold Sheen Obsidian | Golden-colored sheen, highly prized by collectors |
Regulations and Guidelines
The BLM has established specific regulations and guidelines for collecting obsidian at Glass Butte. These include:
- Collecting is limited to designated areas, which are marked by signs and maps.
- Only hand tools are permitted; no power equipment or explosives are allowed.
- Collectors must fill in any holes or trenches created during digging to prevent erosion and maintain the site’s integrity.
- A maximum of 250 pounds of obsidian can be collected per person, per day.
It is essential to respect these regulations and guidelines to ensure the long-term sustainability of Glass Butte and the preservation of this unique geological resource. By following the rules and practicing responsible collecting, visitors can enjoy the thrill of discovering beautiful obsidian gems while also protecting the site for future generations.
Tips and Strategies for Finding Obsidian
To increase your chances of finding high-quality obsidian at Glass Butte, consider the following tips and strategies:
Look for areas with exposed obsidian flows, which can be identified by their smooth, glassy appearance. Search for nodules or fragments of obsidian that have been eroded from the surrounding rock. Pay attention to the terrain, as obsidian is often found in areas with steep slopes or rocky outcroppings. Bring a rock hammer and hand lens to examine potential finds more closely.
What is the best time to visit Glass Butte?
+The best time to visit Glass Butte is during the spring and fall, when the weather is mild and dry. Avoid visiting during the summer months, as the heat can be extreme, and the winter months, when the roads may be closed due to snow.
Do I need any special permits or licenses to collect obsidian at Glass Butte?
+No, you do not need any special permits or licenses to collect obsidian at Glass Butte. However, you must follow the regulations and guidelines established by the BLM, which are posted on site and available online.
Can I sell the obsidian I collect at Glass Butte?
+
