Monon Mine

The Monon Mine is a silver and lead mine located in Mineral county, Colorado at an elevation of 9,180 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: Monon Mine
Secondary: Monon Hill Mine

Commodity

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

Location

State: Colorado
County: Mineral
District: Creede District

Land Status

Land ownership: Private
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

Type: Underground

Ownership

Owner Name: Collins, A. B. And Wheeler, H.R.

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1914
Year Last Production: 1941
Discovery Year: 1914
Discovery Method: Ore-Mineral In Place
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

Form: LENSE, WEDGE

Structure

Type: R
Description: San Juan Volcanic Field; La Garita, Creede, And Bachelor Calderas

Type: L
Description: Local Normal Faulting In Volcanics Underlying Creede Fm, Between Alpha-Corsair And Bulldog Mtn. Fault Zones And Related To Subsidence/Resurgence Of Bachelor And Creede Cauldrons (Creede Graben).

Alterations

Alteration Type: L
Alteration Text: Erratic Silicification

Rocks

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

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

Analytical Data

Analytical Data: ASSAY OF 5 CARLOADS OF ORE RAN 25 TO 71 OZ/TON AG

Materials

Ore: Sphalerite
Ore: Galena
Ore: Chalcopyrite
Gangue: Barite
Gangue: Calcite
Gangue: Pyrite

Comments

Comment (Location): S-T-R, LAT-LONG, AND ELEV DETERMINED FROM EMMONS AND LARSEN'S (1923) TOPO MAP (1:24,000). MINE OR CLAIM LIES ON WEST SIDE OF MONON HILL AT SUNNYSIDE ; INFO FROM LAND.ST :(1976)

Comment (Development): MAIN MINING ACTIVITY 1918-22 WITH ESTIMATED PRODUCTION OF $800,000 (95% AG, REST PB, LITTLE AU, CU). EXPLORATION BUT NO PRODUCTION 1952-58.

Comment (Deposit): SULFIDES IMPREGNATE AND FORM DRUSY COATINGS IN WEDGES OF COARSE-GR., SILICIFIED FANGLOMERATE, PARTLY AND IRREGULARLY IMPREGNATED BY TRAVERTINE, WEDGING OUT DOWNDIP, BOUNDED BY NON- OR WEAKLY MINERALIZED THIN-BEDDED SILTSTONE AND SANDSTONE AND BY UNDERLYING BURIED HILL OF CAMPBELL MTN. RHYOLITE.

Comment (Workings): MINE COMPLEX CONSISTS OF 8 SHAFTS (UNKNOWN DEPTH), 6 PARTLY INTERCONNECTED MAIN DEVELOPMENT TUNNELS AND LEVELS, 4 MAJOR STOPES. INITIAL PORTAL HEADINGS AND MEASURED LENGTH OF MAPPED WORKINGS (LESS STOPES) FROM STEVEN AND RATTE (1965): MOON TUNNEL-S41E, 870 FT, MAGNUSSON TUNNEL-S70E, 660 FT, EADS AND DISCOVERY TUNNELS, S67E, 960 FT, MANITOBA TUNNEL-S71E, 610 FT, SILVER HORDE TUNNEL-N38E, 1890 FT. LARSEN (1929) SHOWS LE FEVRE TUNNEL DRIVEN DUE EAST BUT NOT EXTENDING TO ORE BODY OR OTHER WORKINGS.

References

Reference (Deposit): STEVEN, T.A., AND RATTE, J.C., 1965, GEOLOGY AND STRUCTURAL CONTROL OF ORE DEPOSITION IN THE CREEDE DISTRICT, SAN JUAN MOUNTAINS, COLORADO: USGS PROF. PAPER 487, 90 P.

Reference (Deposit): LINDEMANN, J.W., AND OTHERS, EDS., 1981, FIELD TRIP NOTES, CREEDE MINING DISTRICT, SAN JUAN VOLCANIC PROVINCE, COLORADO: DENVER REGIONAL EXPLORATION GEOLOGISTS SOC. GUIDEBOOK

Reference (Deposit): LARSEN, E.S., 1929, RECENT MINING DEVELOPMENTS IN THE CREEDE DISTRICT, COLORADO: USGS BULL. 811-B.

Reference (Deposit): EMMONS, W.H., AND LARSEN, E.S. 1923, GEOLOGY AND ORE DEPOSITS OF THE CREEDE DISTRICT, COLORADO: USGS BULL. 718, 198 P.

Colorado Mining Photos

Check out this collection of Colorado's best historic mining photos: Incredible Photos of Colorado Mining Scenes.