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Exchequer Tunnel

Creede, Colorado

37.8675°N 106.9289°W

Mine Overview

The Exchequer 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 Exchequer Tunnel is a underground mining operation. Mine operations consist of underground workings. There is one known shaft. Subsurface length extends a maximum of 625 meters (2,050 feet). The ore mined is composed of silver with waste material consisting primarily of quartz, barite and limonite. The ore body extends 73 meters (239 feet) in length. Associated rock in this area is rhyolite 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.

Site identification and general characteristics. Learn about USGS mines.

  • Gold, Lead, and Silver Primary Commodity
  • Copper and Manganese Secondary Commodity
  • Site Record Type?
  • Mine Development Status?
  • Underground Operation Type?
  • Ore Mineral In Place Discovery Method?
  • Metallic Site Commodity Type?
  • Small Mine Size?
Exchequer Tunnel Near Creede, Colorado

Exchequer Tunnel Near Creede, Colorado

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Mine Names

  1. Name? Status?
  2. Exchequer Tunnel Current

Commodities

Additional textual information about a site or mine.

  1. Commodity Type Importance
  2. Gold Metallic Primary
  3. Lead Metallic Primary
  4. Silver Metallic Primary
  5. Copper Metallic Tertiary
  6. Manganese Metallic Tertiary

Deposit

FRACTURE ZONE ALONG CONTACT BETWEEN WILLOW CREEK AND CAMPBELL MOUNTAIN RHYOLITE.

Location Info

  1. Continent Country State County
  2. North America The United States Colorado Mineral

Notes

S-T-R, LAT-LONG, AND ELEV DETERMINED FROM EMMONS AND LARSEN'S (1923) TOPO MAP (1:24, 000 ). MINE OR CLAIM LIES ABOVE W. WILLOW CREEK ON SE END OF BACHELOR MOUNTAIN; INFO FROM LAND. ST : (1976).

Meridian / Township / Range Description

  1. Meridian? Township? Section? Aliquot?
  2. New Mexico Meridian T.42N R.1W Sec. 24 NE
  3. New Mexico Meridian T.42N R.1W Sec. 24 SE
  4. New Mexico Meridian T.42N R.1W Sec. 25 NE

Land Status

Land status information.

  1. Land Status? Admin Area?
  2. National Forest -
  3. Private -

Mining Districts

Formal or informal mining district names.

  1. District
  2. Creed Mining District

Development

NO WORKABLE ORE BODY ENCOUNTERED AS OF 1912.

Workings

Workings at the site.

Underground Workings #1

  • Type: Underground
  • Sub Surface Length: 624.84 Meters

Workings

TUNNEL TRENDS WEST AND NW APPROX. 1200 FEET DRIFT AND CROSSCUTS ALONG RHYOLITE CONTACT AND VEIN TOTAL APPROX. 850 FEET

Materials

Minerals or other materials present in the mine.

  1. Role? Material?
  2. Gangue/Waste Amethyst
  3. Gangue/Waste Barite
  4. Gangue/Waste Limonite
  5. Gangue/Waste Quartz
  6. Ore Silver

Orebody

Characteristics of the ore body.

  • Length:
  • Strike: north 40-45 west
  • Dip: 60 to 90 northwest

Rocks

Geological materials at the site.

  1. Class? 1st Order Name? 2nd Order Name? 3rd Order Name? 4th Order Name? Most Specific Name? Begin Time End Time Description?
  2. Associated Rock Campbell Mountain Member Of Bachelor Mountain Rhyolite; Willow Creek Member Of Bachelor Mountain Rhyolite Volcanic Rock (Aphanitic) Felsic Volcanic Rock Rhyolite Rhyolite Oligocene Oligocene -
  3. Host Rock Campbell Mountain Member Of Bachelor Mountain Rhyolite Volcanic Rock (Aphanitic) Felsic Volcanic Rock Rhyolite Rhyolite - - -
  4. Mineralization - - - - - Miocene Miocene -

Structure

Geologic structural features affecting or characterizing the site or mine.

  1. Scale Description
  2. Local Amethyst Fault Zone; Creede Graben
  3. Regional La Garita, Creede, And Bachelor Calderas; San Juan Volcanic Field

Tectonic

Tectonic setting in which the site or deposit is situated.

  1. Setting?
  2. Central Cordillera (Southern Rocky Mountains)

Physiography

Physiographic area where the resource is found.

  1. Division Province? Section
  2. Rocky Mountain System Southern Rocky Mountains -

Alteration

Mineralogical and chemical alteration at or near the site, which may help to indicate the geographic extent of the geological processes producing the mine.

  1. Type? Alterations
  2. Local Copper Staining

Analytical Data

Results of chemical or mineralogical analysis on materials at or near the site

  1. Line? Analysis Data?
  2. 1 2 TO 45 OUNCE PER TON SILVER, $1.40/TON GOLD

Nearby Deposits

Other deposits in the same region.

  1. Nelson Tunnel

    • Gold commodity Site type Mine status
    • Mineral, Colorado
    • Underground
    • 0.10 miles
    Read More

  2. Mustang Tunnel

    • Silver commodity Site type Mine status
    • Mineral, Colorado
    • Underground
    • 0.18 miles
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  3. Commodore Mine

    • Gold commodity Site type Mine status
    • Mineral, Colorado
    • Underground
    • 0.20 miles
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  4. Colewood Tunnel

    • Lead commodity Site type Mine status
    • Mineral, Colorado
    • Underground
    • 0.32 miles
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  5. Copper Lode

    • Silver commodity Site type Mine status
    • Mineral, Colorado
    • Underground
    • 0.33 miles
    Read More

  6. Jackpot Lode

    • Silver commodity Site type Mine status
    • Mineral, Colorado
    • Underground
    • 0.37 miles
    Read More

  7. Rio Grande Lode

    • Silver commodity Site type Occurrence status
    • Mineral, Colorado
    • 0.37 miles
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  8. Jo Jo Tunnel

    • Silver commodity Site type Occurrence status
    • Mineral, Colorado
    • 0.38 miles
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  9. Freeport Tunnel

    • Silver commodity Site type Prospect status
    • Mineral, Colorado
    • 0.40 miles
    Read More

  10. Overholt Lode

    • Silver commodity Site type Mine status
    • Mineral, Colorado
    • Underground
    • 0.44 miles
    Read More

Nearby Places

Nearby Mining Districts

Nearby Lands

Footnotes

* 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.

Mining Claim News From The Diggings™

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