Allara Tunnel

The Allara Tunnel is a silver, lead, and zinc mine located in Saguache county, Colorado at an elevation of 10,200 feet.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: Allara Tunnel

Commodity

Primary: Silver
Primary: Lead
Primary: Zinc
Secondary: Gold
Secondary: Copper
Tertiary: Manganese
Tertiary: Cadmium

Location

State: Colorado
County: Saguache
District: Bondholder District

Land Status

Land ownership: National Forest
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.

Holdings

Not available

Workings

Not available

Ownership

Owner Name: Bonnez Mining Co.
Years: 1971 -

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Deposit Type: Vein
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Southern Rocky Mountains

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Type: R
Description: San Juan Volcanic Field, La Garita Caldera

Type: L
Description: La Garita Caldera, San Luis Caldera

Alterations

Not available

Rocks

Name: Rhyolite
Role: Associated
Age Type: Host Rock Unit
Age Young: Oligocene

Name: Rhyolite
Role: Associated
Age Type: Associated Rock
Age Young: Oligocene

Name: Rhyolite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Oligocene

Name: Rhyolite
Role: Associated
Age Type: Host Rock
Age Young: Oligocene

Analytical Data

Analytical Data: NO. 52, 5, 1, 1, 0.3, GT 5000, 20, 700, 10, 20, 300, 10, 7, 7000, 100, 100, 10000, 100, 0.01 OZ/TON AU, 0.80 OZ/TON AG, 0.050% CU, 0.50% PB, 0.81% ZN, 0.003% CD, 0.36% MN. ALL ARE DUMP SAMPLES
Analytical Data: NO. 51, 2, 1, 2, 0.2, 2000, 15, 700, 5, 10, 20, LT 5, 5, 1500, 100, 20, 1500, 100, 0.01 OZ/TON AU, 1.74 OZ/TON AG, 0.08% PB, 0.06% ZN
Analytical Data: NO. 50, 2, 0.5, 0.5, 0.1, 1500, 20, 700, 5, 20, 70, 5, 5, 2000, 100, 30, 3000, 100, 0.005 OZ/TON AU, 0.70 OZ/TON AG, 0.08% PB, 0.07% ZN
Analytical Data: STEVEN AND BIENIEWSKI RAN SEMIQUANTITATIVE SPECTROGRAPHIC ANALYSES ON GRAB AND CHIP SAMPLES FROM VARIOUS DUMPS IN MINE AREA. EACH SET OF VALUES IS SAMPLE NUMBER, % FE, % MG, % CA, % TI, PPM MN, PPM AG, PPM BA, PPM CO, PPM CR, PPM CU, PPM MO, PPM NI, PPM PB, PPM SR, PPM V, PPM AN, PPM ZR, AND VARIOUS FIRE ASSAYS FOR BASE AND PRECIOUS AND OTHER METALS (LT=LESS THAN, TR=TRACE): NO. 49, 5, 2, 5, 0.5, 1000, 0.7, 1000, 20, 20, 50, 5, 10, 150, 500, 200, LT 200, 100, 0.005 OZ/TON AU, 0.26 OZ/TON AG

Materials

Ore: Sphalerite
Ore: Galena

Comments

Comment (Location): ALONG EAST SIDE OF SPRING CR NEAR WOODMANSEE MINE IN UNSURVEYED SECTION. LAT-LONG IS APPROX. CENTER OF SW SIDE OF CLAIMS BLOCK ; INFO FROM LAND.ST :1976; PREVIOUS QUAD DESIGNATION = MONTROSE 1:250000

Comment (Development): TUNNEL DRIVEN 1966-68 BENEATH WOODMANSEE PROPERTY TO INTERSECT VEINS AT DEPTH

Comment (Deposit): IRREGULARLY SILICIFIED VEINS CONTAIN ERRATIC LOW-GRADE QUARTZ-PYRITE OR QUARTZ-SULFIDE MINERALIZATION. NO PERSISTENT MINERALIZING STRUCTURAL ZONE.

Comment (Workings): TUNNEL DRIVEN PROBABLY NE TO ENE 650 FT. A 130-FT-LONG DRIFT WAS DRIVEN NORTH FROM TUNNEL AT POINT 320 FT FROM PORTAL

References

Reference (Deposit): STEVEN, T.A., AND BIENIEWSKI, C.L., 1977, MINERAL RESOURCES OF THE LA GARITA WILDERNESS, SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS BULL. 1420, ANALYSES 49, 50, 51, AND 52

Colorado Mining Photos

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