Where to Find Silver in Colorado: 158 Mapped Sites
Colorado has 158 documented sites where silver have been reported, and the best-known are Allara Tunnel, Black King Mine, and Calico Peak Alunite Deposit. Every site is mapped below with GPS coordinates and links to a full report of access and what's been found there. 2 of the 158 sites are on public-access land.
Last updated: — data compiled by the Rockhounding.org Research Team · methodology
Silver Map: Colorado
All 158 silver sites in Colorado. Click a pin for the full site report.
Where Silver Are Found in Colorado
Silver rides hydrothermal veins, usually alongside galena and other sulfides, and enriches in the oxidized upper parts of old mining districts. Historic silver-district dumps are the practical hunting ground.
The richest reported sites in Colorado: Allara Tunnel, Black King Mine, Calico Peak Alunite Deposit, Cascade Mine, Gold Eagle Mine.
Of the 158 sites, 2 are public access. Check each site report for current land status before you go.
All Silver Sites in Colorado
- Allara Tunnel — Forest Service
- Black King Mine — BLM/Public Lands
- Calico Peak Alunite Deposit — Forest Service
- Cascade Mine — Forest Service
- Gold Eagle Mine — Forest Service
- Iron Mountain prospect — Forest Service
- King Solomon Creek — Forest Service
- Zulu Chief — Forest Service
- 7d Tunnel — Forest Service
- Brooklyn Mine — Forest Service
- Caprock deposit — BLM/Public Lands
- Cash Mine — Forest Service
- Decatur West District — Forest Service
- Eureka — Forest Service
- Glennbrook Mine — Forest Service
- Gold Basin area — BLM/Public Lands
- Greenville Shaft — Forest Service
- Gunnison District — BLM/Public Lands
- Hand-Out — Forest Service
- Honeydew — Forest Service
- Littlejohn J and S — Forest Service
- Little Silver — Forest Service
- Lower Slavonia — Forest Service
- Monte Queen Mine — BLM/Public Lands
- O. F. Lode — Forest Service
- Osceola — BLM/Public Lands
- Piedra Peak-Red Mountain Alunite Deposits — Forest Service
- Revenue — Forest Service
- Silver Clad Mine — Forest Service
- Silver Wing Property — BLM/Public Lands
- Sodom Mine — Forest Service
- Synopsis Mine — Forest Service
- Treasure Hill Spar Claim — Forest Service
- Whale-Galena-Independence Claims — BLM/Public Lands
- Yellow Jacket — Forest Service
- Adelaide Claim — Forest Service
- Broadbury Group — Forest Service
- Campbell Tunnel and Shaft — Forest Service
- C & K Drilling — Forest Service
- Comstock Mine — Forest Service
- Copper Spur — BLM/Public Lands
- Cowboy Johnson Adit — Forest Service
- Crescent Mine — BLM/Public Lands
- Cy Claims — Forest Service
- Difficult Creek District — Forest Service
- Eagle Mine — Forest Service
- E.C.Y. Claims — Forest Service
- Elizabeth Prospect — BLM/Public Lands
- Ella, Ella C, Crown, Justice — Forest Service
- Farwell Mountain Northwest — Forest Service
Showing 50 of 158 sites — every site appears on the map above.
How to Identify Silver
Native silver rarely looks silver in the field — it tarnishes dark gray to black. The tells are its wire and branching (dendritic) growth habits, serious heft, and malleability: a knife point digs a bright metallic groove instead of flaking the surface. On mine dumps, dark heavy pieces that cut rather than crumble deserve a second look.
Not sure what you found? Try our identification guide →Frequently Asked Questions
Where can I find silver in Colorado?
Colorado has 158 mapped sites where silver have been reported. The best-known are Allara Tunnel, Black King Mine, and Calico Peak Alunite Deposit. Each listing on the map above includes GPS coordinates, access type, and what has been found there.
How many silver sites are mapped in Colorado?
We have 158 documented silver sites in Colorado, compiled from community submissions and published locality records and reviewed by the Rockhounding.org Research Team.
Is it legal to collect silver in Colorado?
Casual collecting is generally allowed on BLM and National Forest land for personal, non-commercial use — the standard BLM limit is 25 lbs per day plus one specimen. National parks, monuments, and many state parks prohibit collecting, and private land always requires the owner's permission. Check the site report for each location and verify current land status before you dig.
How do I identify silver?
Native silver rarely looks silver in the field — it tarnishes dark gray to black. The tells are its wire and branching (dendritic) growth habits, serious heft, and malleability: a knife point digs a bright metallic groove instead of flaking the surface. On mine dumps, dark heavy pieces that cut rather than crumble deserve a second look.
What should I bring to collect silver?
The basics: a rock hammer, safety glasses, gloves, a bucket or padded bag for specimens, and a GPS app with the coordinates from this page. Add a spray bottle — wetting a stone makes color and banding far easier to judge in the field.
⚠️ Always verify current regulations, weather conditions, and access requirements before visiting any location. Information provided is based on community submissions and may not be current or accurate.
Silver in Nearby States
Data: USGS Mineral Resources Data System, community submissions — reviewed and approved by the Rockhounding.org Research Team. Always verify current land status, regulations, and access before visiting any site.