The Freeport Tunnel is near Creede, Colorado. Historically the site has been associated with the Creed Mining District which is now part of the Rio Grande National Forest. The site was first discovered in 1919 by Fred Monkemeyer. Mine operations consist of underground workings. There is one known shaft. Subsurface length extends a maximum of 207 meters (680 feet). The ore mined is composed of acanthite with waste material consisting primarily of limonite, hematite and barite. Associated rock in this area is quartz latite from the Oligocene epoch 33.90 to 23.03 million years ago. The Southern Rocky Mountains physiographic province of the Rocky Mountain System characterize the geomorphology of the surrounding area.
Additional textual information about a site or mine.
SILVER SULFIDES WITH TRACE OF BASE METALS ARE VERY FINELY DISSEMINATED IN 1) CARBONACEOUS, TUFFACEOUS, SILTY TO COARSE-GRAINED SANDSTONE IN LOWER MONKEMEYER SS ., AND 2) IN SANDY MATRIX OF COMMODORE CONGLOMERATE AND ASSOCIATED WITH IRON AND MANGANESE OXIDE ALTERATION OCCURRING AS FRACTURE AND PORE SPACE COATINGS. MINERALIZATION FOUND BOTH IN SILICIFIED AND NONSILICIFIED ROCK.
S-T-R, LAT-LONG, AND ELEV DETERMINED FROM EMMONS AND LARSEN'S (1923) TOPO MAP (1:24, 000 ). MINE OR CLAIM LIES ON SE SIDE OF BACHELOR MOUNTAIN SOUTHWEST OF BACHELOR AND COMMODORE MINES.; INFO FROM LAND. ST : (1976).
Formal or informal mining district names.
RICH ORES ASSAYING AS HIGH AS 800 OZ/TON SILVER WERE MINED AND QUICKLY DEPLETED FOLLOWING 1919 DISCOVERY. NO PROSPECTING UNTIL 1975 UNDER MECO-FREEPORT JOINT VENTURE; 1981 FEASIBILITY STUDY INDICATES PROVEN AND PROBABLE RESERVES OF 3. 348 MILLION TONS OF ORE AT 6. 39 OZ/TON SILVER. EXPLORATION AND EVALUATION CONTINUING.
Workings at the site.
ONE TUNNEL DRIVEN WESTERLY 680 FEET
Processes that concentrated or enriched the mineralization of the mine.
Geological materials at the site.
Geologic structural features affecting or characterizing the site or mine.
Tectonic setting in which the site or deposit is situated.
Physiographic area where the resource is found.
Mineralogical and chemical alteration at or near the site, which may help to indicate the geographic extent of the geological processes producing the mine.
Controls on emplacement of ore such as faults or other structural features.
Other deposits in the same region.
Rio Grande Lode
Wedge Silver Mine
* Mine bounds on map indicate the general area that a mine occupies. For an detailed map, refer to the overseeing BLM field office.
** The mine central point is based on an average of the mine's bounding box(es) and does not necessarily fall on the claim itself.
1 World-class significance is determined by total endowment of the contained commodity. This includes all past production and remaining reserves. Each commodity is considered separately and commodities cannot be combined to arrive at a significant size. The tonnage thresholds are from the mine model grade-tonnage studies. As of June 2008, many entries were classified as significant under less strict rules.
Learn more about the Bureau of Land Management, Public Land Survey System, and mining claims.
Understanding Claim Ownership
We receive lots of emails from people who find their name or a relative’s name on our site and want to know if this means they have some right to the land listed under that name.
Understanding BLM Administrative Areas
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Understanding Location Data
Mine handled by the Bureau of Land Management are not mapped by latitude and longitude, instead, these mines harken back to the Public Land Survey System.
A “township” can refer to two different things. Both are part of the PLSS measurement system but have different uses.