Oregon Claims

The Oregon Claims is a molybdenum, lead, and zinc mine located in La Plata county, Colorado at an elevation of 12,740 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

Name: Oregon Claims  

State:  Colorado

County:  La Plata

Elevation: 12,740 Feet (3,883 Meters)

Commodity: Molybdenum, Lead, Zinc

Lat, Long: 37.57806, -107.59806

Map: View on Google Maps

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.


Satelite image of the Oregon Claims

Oregon Claims MRDS details

Site Name

Primary: Oregon Claims
Secondary: Unpatented Claims: Oregon No. 1
Secondary: Oregon No. 2


Commodity

Primary: Molybdenum
Primary: Lead
Primary: Zinc


Location

State: Colorado
County: La Plata
District: Needle Mountain (Tacoma, Florida, Vallecito) 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.
Administrative Organization: San Juan N. F.


Holdings

Not available


Workings

Type: Underground


Ownership

Owner Name: C. M. Ayers
Home Office: Durango, Co.
Years: 1917 -


Production

Not available


Deposit

Record Type: Site
Operation Category: Occurrence
Deposit Type: Vein
Operation Type: Unknown
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

Model Name: Polymetallic veins


Orebody

Not available


Structure

Type: R
Description: San Juan Uplift, San Juan Basin, San Juan Volcanic Field

Type: L
Description: Needle Mtns Uplift, Chicago Basin Stock, Eolus Batholith, Trimble Stock


Alterations

Not available


Rocks

Name: Granite
Role: Host
Age Type: Host Rock Unit
Age in Years: 1466.000000+-27.000000
Dating Method: Rb-Sr
Age Young: Precambrian

Name: Granite
Role: Host
Age Type: Associated Rock Unit
Age in Years: 1466.000000+-20.000000
Dating Method: U-Pb (zircon)
Material Analyzed: Zircon
Age Young: Precambrian

Name: Granite
Role: Host
Age Type: Associated Rock Unit
Age in Years: 1460.000000+-70.000000
Dating Method: K-Ar
Age Young: Precambrian

Name: Granite
Role: Host
Age Type: Associated Rock Unit
Age in Years: 10.100000+-1.100000
Material Analyzed: Zircon
Age Young: Miocene

Name: Granite
Role: Host
Age Type: Associated Rock Unit
Age in Years: 9.000000+-0.900000
Material Analyzed: Zircon
Age Young: Miocene

Name: Granite
Role: Associated
Age Type: Associated Rock Unit
Age in Years: 9.000000+-0.900000
Material Analyzed: Zircon
Age Young: Miocene

Name: Granite
Role: Associated
Age Type: Host Rock Unit
Age in Years: 1466.000000+-27.000000
Dating Method: Rb-Sr
Age Young: Precambrian

Name: Granite
Role: Associated
Age Type: Associated Rock Unit
Age in Years: 1466.000000+-20.000000
Dating Method: U-Pb (zircon)
Material Analyzed: Zircon
Age Young: Precambrian

Name: Granite
Role: Associated
Age Type: Associated Rock Unit
Age in Years: 1460.000000+-70.000000
Dating Method: K-Ar
Age Young: Precambrian

Name: Granite
Role: Associated
Age Type: Associated Rock Unit
Age in Years: 10.100000+-1.100000
Material Analyzed: Zircon
Age Young: Miocene

Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock Unit
Age in Years: 9.000000+-0.900000
Material Analyzed: Zircon
Age Young: Miocene

Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock Unit
Age in Years: 1466.000000+-27.000000
Dating Method: Rb-Sr
Age Young: Precambrian

Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock Unit
Age in Years: 1466.000000+-20.000000
Dating Method: U-Pb (zircon)
Material Analyzed: Zircon
Age Young: Precambrian

Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock Unit
Age in Years: 1460.000000+-70.000000
Dating Method: K-Ar
Age Young: Precambrian

Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock Unit
Age in Years: 10.100000+-1.100000
Material Analyzed: Zircon
Age Young: Miocene

Name: Rhyolite
Role: Associated
Age Type: Associated Rock Unit
Age in Years: 9.000000+-0.900000
Material Analyzed: Zircon
Age Young: Miocene

Name: Rhyolite
Role: Associated
Age Type: Associated Rock Unit
Age in Years: 10.100000+-1.100000
Material Analyzed: Zircon
Age Young: Miocene


Analytical Data

Analytical Data: SECOND SAMPLE ASSAYED 1.156% MO
Analytical Data: ASSAY OF 4-INCH VEINS GAVE 2.1% MO


Materials

Ore: Galena
Ore: Molybdenite
Ore: Sphalerite
Gangue: Quartz


Comments

Comment (Location): (LAND STATUS AND ADMINISTRATIVE AREA LOCATIONS CALCULATED USING GIS OVERLAY ANALYSIS FOR SAN JUAN N. F.). ON EAST SILVER MESA ADJOINING PITTSBURG MINE, WITHIN 2000 FT OF LILLIE LAKE. ELEV AND LAT-LONG GIVEN ARE FOR PROSPECT NEAR TRIMBLE PASS AND WSW OF LILLIE LAKE. ; INFO FROM LAND.ST :1974

Comment (Deposit): PB-ZN-BEARING QUARTZ VEINS PROBABLY STRIKE NW AND COULD BE EITHER OF RADIAL FRACTURE SYSTEM OR OF REGIONAL RECTANGULAR FRACTURE SYSTEM. MOLYBDENITE OCCURS IN SMALL BUNCHES, FACINGS, AND SINGLE CRYSTALS.

Comment (Workings): ABOUT 12 SHALLOW SHAFTS


References

Reference (Deposit): STEVEN, T.A., AND OTHERS, 1969, MINERAL RESOURCES OF THE SAN JUAN PRIMITIVE AREA, COLORADO: USGS BULL. 1261-F.

Reference (Deposit): SCHMITT, L.J., AND RAYMOND, W.H., 1977, GEOLOGY AND MINERAL DEPOSITS OF THE NEEDLE MOUNTAINS DISTRICT, SOUTHWESTERN COLORADO: USGS BULL. 1434, 40 P.

Reference (Deposit): WORCESTER, P.G., 1919, MOLYBDENUM DEPOSITS OF COLORADO WITH GENERAL NOTES ON THE MOLYBDENUM INDUSTRY: CGS BULL. 14, P. 68-69.


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