• Nickel Mountain Mine tailing is the only site to find garnierite and chrysoprase
Nickel Mountain in Douglas County is the only area in Oregon where garnierite and chrysoprase are produced. Though most land in the area is private property, the tailing pile of a closed nickel mine provides the opportunity to find small amounts of garnierite and chrysoprase for the general public.
This site is located at Cow Creek Back County Byway, 3 miles southwest of the small city of Riddle.
Garnierite is a green-colored nickel ore mineral embedded within pockets of weathered ultramafic rocks.
Chrysoprase is a variety of chalcedony that contains trace amounts of nickel salts, giving it its apple-green color.
The Nickel Mountain Mine was discovered in 1864 and produced nickel ore. Mining operations began in 1882 and continued until 1987. Once the nickel was nearly depleted, the mine was repurposed for extracting slag, which also gave rock collectors a chance to obtain unique minerals.
A large rock pile next to the gate is open for mineral collection along the road-facing side. A hammer, a gad, and a chisel can be helpful.
Look for traces of green color among rusty masses of limonite. Garnierite is more common here, while chrysoprase is significantly rarer.
There are no amenities on the site.
This site lies along the Cow Creek Back Country Byway, which connects the cities of Glendale, Riddle, Tri-City, and Interstate 5. The scenic route offers a journey through history, with numerous opportunities for swimming, fishing, gold panning, and rockhounding.
Nickel Mountain Mine | Facts
Open: Year-round
Managed by: Private mine
Location: Riddle
Rocks & Minerals: Garnierite and chrysoprase
Tools: Rock hammer, gad, and chisel
Amenities: None
Distance from the parking: Short
Road access: Any vehicle
Elevation: 700 ft (213 m)
Nickel Mountain Mine is located:
- 3 miles southwest of Riddle
- 10 miles west of Canyonville
- 98 miles south of Eugene.
Adventures Nearby
Directions to Nickel Mountain Mine
From I-5,
- Take exit 103 for Pruner Road toward Riddle
- Drive 5.3 miles on Pruner Road which becomes Riddle Bypass Road to the destination on the right.
Is the Nickel Mountain mine rockhounding site free? Do I need to contact anyone? Is there any fees to access the pile? Is there someone who will meet me there or ask for permission to search to Rockhound?
This is a tailing at the mine entrance. You can collect anything in front of it for free, but do not go through the gate.
The security can come and you can ask any questions.
No there any more as far as I could tell a few days ago. The guy at the gate said they had gotten rid of all the tailing in the front. Alas.
I went to the site yesterday and there is very little to pick through and access to the mining site is private and denied. I was very disappointed.